Query：
学者姓名：牟刚
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
This study investigated the fabrication of a strengthened Ti-TiO2 material with adding 0.5 wt.% TiO2 nanoparticles via selective laser melting process in comparison with CP-Ti. Through the process parameters optimized by response surface methodology, the Ti-TiO2 material fabricated by SLM showed remarkable tensile strength of 800.6 MPa and elongation of 14%, as compared to the fabricated CP-Ti with tensile strength of 594.0 MPa and elongation of 21%. The x-ray diffraction patterns of fabricated specimens showed the expansion of the hcp-Ti lattice along the c-axis due to dissolved oxygen atoms from the decomposition of TiO2 nanoparticles. The microstructure analysis observed remains of incompletely decomposed TiO2 and TiO phases in SLMed Ti-TiO2 material, which was distinguished from former studies. Consequently, the decomposition behavior of added TiO2 nanoparticles associated with the dissolved oxygen in the Ti-matrix during the SLM process was discussed. Based on the evaluation of both the solution effect of oxygen atoms and the reinforcing effect of undecomposed nanoparticles, the dissolved oxygen from decomposed TiO2 was considered the primary factor in the intensified strength of SLMed Ti-TiO2 material. These results could offer novel insights into the additive manufacturing of high-strength and biocompatible titanium alloy via the SLM process.
Keyword ：
additive manufacturing additive manufacturing biomaterials biomaterials composites composites metallic matrix metallic matrix strengthening mechanism strengthening mechanism titanium titanium
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xiang, Hongliang , Chen, Xiaoyu , Huang, Ye et al. Decomposition Behavior and Strengthening Mechanism of Ti-TiO2 Material in Selective Laser Melting Process [J]. | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2025 . |
| MLA | Xiang, Hongliang et al. "Decomposition Behavior and Strengthening Mechanism of Ti-TiO2 Material in Selective Laser Melting Process" . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2025) . |
| APA | Xiang, Hongliang , Chen, Xiaoyu , Huang, Ye , Wu, Chaochao , Mou, Gang , Zheng, Kaikui . Decomposition Behavior and Strengthening Mechanism of Ti-TiO2 Material in Selective Laser Melting Process . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2025 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The surface of the TC11 titanium alloy is significantly strengthened through the ultrasonic tumbling process. The effect of ultrasonic tumbling process parameters on the microstructure and surface roughness of a titanium alloy using multiple techniques are investigated, including OM, white light interferometry, SEM, EDS, and XRD. The hardness, friction, and wear properties of the rolling surface are analyzed using a microhardness tester and a multifunctional friction-wear tester. The results indicate that the surface roughness of the titanium alloy decreases initially and then increases with an increase in rolling power, rolling times, static pressure, reduction, spindle speed, and feed rate. The lowest value is achieved with the following parameters: 660 W rolling power, 5 rolling times, static pressure of 0.20 MPa, reduction of 0.15 mm, spindle speed of 200 r·min−1, and feed rate of 0.10 mm·r−1. With an increase in power, the surface hardness of titanium alloy increases, which leads to a reduction in friction coefficient and wear loss. As the rolling times, static pressure, reduction, spindle speed, and feed rate increase, the surface hardness initially increases and then decreases. Meanwhile, the friction coefficient and wear loss tend to decrease initially and then increase. When the rolling power is set to 990 W, the rolling frequency is 5 times, the static pressure is 0.20 MPa, the reduction is 0.15 mm, the spindle speed is 200 r·min−1, and the feed rate is 0.10 mm·r−1, the hardness reaches its maximum value, while the friction coefficient and wear loss reach their minimum values. Response surface optimization was conducted to obtain the optimal process parameters, including a rolling power of 990 W, rolling frequency of 5 times, static pressure strength of 0.20 MPa, reduction of 0.15 mm, spindle speed of 198 r·min−1, and feed rate of 0.10 mm·r−1. Compared to the surface of the titanium alloy before rolling, the hardness increased by 36.4% from 337 HV to 461 HV, the surface roughness decreased by 89.9% from 1.88 μm to 0.19 μm, and the wear loss decreased by 83.3% from 0.60 mg to 0.10 mg. © 2024 Chinese Mechanical Engineering Society. All rights reserved.
Keyword ：
Friction Friction Hardness Hardness Rolling Rolling Surface properties Surface properties Surface roughness Surface roughness Titanium alloys Titanium alloys Wear of materials Wear of materials
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zheng, Kaikui , Zhao, Xinzhe , Mou, Gang et al. Surface Quality, Friction and Wear Properties of TC11 Titanium Alloy Strengthened Using Ultrasonic Rolling [J]. | Journal of Mechanical Engineering , 2024 , 60 (9) : 137-151 . |
| MLA | Zheng, Kaikui et al. "Surface Quality, Friction and Wear Properties of TC11 Titanium Alloy Strengthened Using Ultrasonic Rolling" . | Journal of Mechanical Engineering 60 . 9 (2024) : 137-151 . |
| APA | Zheng, Kaikui , Zhao, Xinzhe , Mou, Gang , Ren, Zhiying . Surface Quality, Friction and Wear Properties of TC11 Titanium Alloy Strengthened Using Ultrasonic Rolling . | Journal of Mechanical Engineering , 2024 , 60 (9) , 137-151 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Insole blanking production technology plays a vital role in contemporary machining and manufacturing industries. Existing insole blanking production models have limitations because most robots are required to accurately position the workpiece to a predetermined location, and special auxiliary equipment is usually required to ensure the precise positioning of the robot. In this paper, we present an adaptive blanking robotic system for different lighting environments, which consists of an industrial robot arm, an RGB-D camera configuration, and a customized insole blanking table and mold. We introduce an innovative edge detection framework that utilizes color features and morphological parameters optimized through particle swarm optimization (PSO) techniques to Adaptive recognition of insole edge contours. A path planning framework based on FSPS-BIT* is also introduced, which integrates the BIT* algorithm with the FSPS algorithm for efficient path planning of the robotic arm.
Keyword ：
Adaptive edge detection Adaptive edge detection BIT* BIT* Insole blanking Insole blanking Path planning Path planning Robotic system Robotic system
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Tang, Rui , Guo, Shirong , Wang, Kunfu et al. A framework of insole blanking robot based on adaptive edge detection and FSPS-BIT* path planning [J]. | SCIENTIFIC REPORTS , 2024 , 14 (1) . |
| MLA | Tang, Rui et al. "A framework of insole blanking robot based on adaptive edge detection and FSPS-BIT* path planning" . | SCIENTIFIC REPORTS 14 . 1 (2024) . |
| APA | Tang, Rui , Guo, Shirong , Wang, Kunfu , Lin, Hongdi , Huang, Lujin , Mou, Gang . A framework of insole blanking robot based on adaptive edge detection and FSPS-BIT* path planning . | SCIENTIFIC REPORTS , 2024 , 14 (1) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Ti-steel laminated metal composites have been widely used in shipbuilding and the chemical industry due to the superior corrosion resistance of Ti and the favorable mechanical properties of stainless steel. In this paper, Tisteel laminated metal composites without Ti-Fe IMCs have been fabricated by directed energy deposition-arc method using a Cu-Ni transition interlayer. Based on the analysis of microstructure analysis, the crosssectional microstructure can be divided into 304SS / Cu-Ni interface containing (Fe, Cr) and (Cu) solid solution, Cu-Ni deposition layer containing (Fe, Cr) and (Cu) solid solution, and TA2/Cu-Ni interface containing Ti2FeCu and Ti-Cu IMCs. Besides, the Cu-Ni deposition layer contains a small content of recrystallized grains with {100}<100> texture and a large content of deformed grains with{100}<110> texture due to the impact of arc and droplets during continuous depositions. Furthermore, the peak hardness is decreased to 518 Hv and the mean value of compressive shear strength is enhanced to 195.27 MPa, which can be attributed to the elimination of interfacial Ti-Fe IMCs, defect-free microstructure, and residual stress relief. Based on polarization curves and electrochemical impedance spectroscopy, the corrosion resistance reduction of the cross-section is due to the formation of a mass of primary battery systems. Furthermore, based on the thermodynamics calculation of Fe-CuNi, Ti-Fe-Cu, and Ti-Ni-Cu ternary systems, the alloying mechanism is that Ti-based IMCs with lower Gibbs free energy will be formed instead of brittle Ti-Fe IMCs, resulting in the elimination of Ti-Fe IMCs and the formation of less brittle phases at both 304SS / Cu-Ni interface and TA2 / Cu-Ni interface.
Keyword ：
Additive manufacturing Additive manufacturing Interfacial alloying Interfacial alloying Laminated metal composite Laminated metal composite Mechanical property Mechanical property Microstructure Microstructure
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Mou, Gang , Sheng, Haiyang , Zheng, Kaikui et al. Dual-interfacial alloying mechanism in Ti-steel laminated metal composite fabricated by wire-arc directed energy deposition using a Cu-Ni interlayer [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 1010 . |
| MLA | Mou, Gang et al. "Dual-interfacial alloying mechanism in Ti-steel laminated metal composite fabricated by wire-arc directed energy deposition using a Cu-Ni interlayer" . | JOURNAL OF ALLOYS AND COMPOUNDS 1010 (2024) . |
| APA | Mou, Gang , Sheng, Haiyang , Zheng, Kaikui , Xiang, Hongliang , Ren, Wenjie , Ding, Yuhan . Dual-interfacial alloying mechanism in Ti-steel laminated metal composite fabricated by wire-arc directed energy deposition using a Cu-Ni interlayer . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 1010 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The supportfree printing of overhanging structure arouses enormous interest for its advantages to eliminate the need for support removal and to improve the efficiency in laser powder bed fusion (L-PBF) additive manufacturing. However, the improvement of down -facing surface quality remains a significant challenge, where an in-depth understanding of the formation of overhanging tracks is essential. This paper developed a multiphysics model of overhanging tracks in L-PBF to systematically investigate the formation mechanisms of key features such as discontinuity and dross, as well as their correlation with surface roughness. It reveals that there are two main causes of discontinuity of overhanging tracks: the coalescence and balling of the melt under low energy density, and the irregular sinking of melt pool at the overhanging edge. The high energy density could mitigate the occurrence of discontinuous tracks, but it might also lead to undesirable dross upon the complete penetration of the overhanging structure. The relationship between processing parameters, morphological defects and surface roughness were systematically discussed, which revealed the necessity to tailor processing parameters for different overhang angles to improve the down -facing surface quality. Furthermore, the significant correlation between the single-track morphology and the down -facing surface roughness has been demonstrated quantitatively, which proposed a practical way to predict the trend of the down -facing surface quality by single-track simulation. This could help improve the supportfree printing process in metal additive manufacturing.
Keyword ：
Laser powder bed fusion Laser powder bed fusion Multi-physics modeling Multi-physics modeling Overhanging structure Overhanging structure Supportfree printing Supportfree printing Surface roughness Surface roughness
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xiang, Hongliang , Zhou, Yulong , Zhang, Xiangkai et al. Supportfree printing in laser powder bed fusion: Formation mechanisms of discontinuity, dross and surface roughness [J]. | OPTICS AND LASER TECHNOLOGY , 2024 , 177 . |
| MLA | Xiang, Hongliang et al. "Supportfree printing in laser powder bed fusion: Formation mechanisms of discontinuity, dross and surface roughness" . | OPTICS AND LASER TECHNOLOGY 177 (2024) . |
| APA | Xiang, Hongliang , Zhou, Yulong , Zhang, Xiangkai , Li, Jie , Huang, Ye , Mou, Gang et al. Supportfree printing in laser powder bed fusion: Formation mechanisms of discontinuity, dross and surface roughness . | OPTICS AND LASER TECHNOLOGY , 2024 , 177 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Specimens of duplex stainless steel (DSS) fabricated by selective laser melting (SLM) exhibit excellent strength but poor plasticity, which has limited their applications. To improve the plasticity and to achieve a strengthplasticity matching, the effect of the laser scanning speed on the density, phase, microstructure, and mechanical properties of 2205 DSS specimens fabricated via SLM is investigated. The results reveal that the molten metal is solidified according to the kinetic sequence L -> delta + L -> delta -> delta + gamma for the SLM forming process, and the sample is completely composed of the ferrite phase. The content of austenite cannot be effectively enhanced by a change in the laser scanning speed. The mechanical properties of the samples are primarily affected by the presence of pores. A scanning speed of S700 (700 mm/s) results in the formation of fewer pores, which gives rise to a high yield strength of 896.80 MPa but a poor plasticity of 15.34 %. Decreasing the scanning speed to below 700 mm/s reduces the yield strength, but it also significantly increases the elongation. The elongation of the specimens fabricated using a laser scanning speed of 500 mm/s increases to 23.09 %, and they exhibit excellent strengthplasticity matching. This increased elongation at lower scanning speeds is attributed to higher density, lower dislocation density, decreased number of grain boundaries and the higher proportion of high-angle grain boundaries (HAGBs) of the specimens. Therefore, a significant decrease in the scanning speed can improve the plasticity of the specimens fabricated by the SLM method. By changing the laser scanning speed, the density, microstructure and mechanical properties can be optimized to further improve the plasticity of the specimens.
Keyword ：
Densification Densification Duplex stainless steel Duplex stainless steel Laser scanning speed Laser scanning speed Mechanical properties Mechanical properties Microstructure Microstructure Selective laser melting Selective laser melting
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhao, Wei , Xiang, Hongliang , Yu, Rongxin et al. Effects of laser scanning speed on the microstructure and mechanical properties of 2205 duplex stainless steel fabricated by selective laser melting [J]. | JOURNAL OF MANUFACTURING PROCESSES , 2023 , 94 : 1-9 . |
| MLA | Zhao, Wei et al. "Effects of laser scanning speed on the microstructure and mechanical properties of 2205 duplex stainless steel fabricated by selective laser melting" . | JOURNAL OF MANUFACTURING PROCESSES 94 (2023) : 1-9 . |
| APA | Zhao, Wei , Xiang, Hongliang , Yu, Rongxin , Mou, Gang . Effects of laser scanning speed on the microstructure and mechanical properties of 2205 duplex stainless steel fabricated by selective laser melting . | JOURNAL OF MANUFACTURING PROCESSES , 2023 , 94 , 1-9 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
本发明涉及一种电磁脉冲焊接用管材实时对中纠偏装置及方法，该装置包括电磁脉冲焊台、管材对中纠偏模块和图像采集处理模块，所述电磁脉冲焊台上安装外管，所述管材对中纠偏模块包括十字滑台机构和控制器，所述十字滑台机构上安装内管，所述图像采集处理模块用于获取内外管装配图像，对图像进行处理并计算内外管偏心距，如果偏心距符合焊接要求，则通过电磁脉冲焊台对内外管进行焊接，如果偏心距不符合焊接要求，则通过控制器控制十字滑台机构驱动内管进行横向及竖向移动，进而调节内外管偏心距，实现内外管对中纠偏。该装置及方法有利于提高口径不同管材电磁脉冲焊接中内外管对中的效率和精度。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 牟刚 , 沈少炜 , 郭世荣 et al. 一种电磁脉冲焊接用管材实时对中纠偏方法 : CN202210743486.2[P]. | 2022-06-28 00:00:00 . |
| MLA | 牟刚 et al. "一种电磁脉冲焊接用管材实时对中纠偏方法" : CN202210743486.2. | 2022-06-28 00:00:00 . |
| APA | 牟刚 , 沈少炜 , 郭世荣 , 何迪斐 , 张振宁 , 蔡裕德 . 一种电磁脉冲焊接用管材实时对中纠偏方法 : CN202210743486.2. | 2022-06-28 00:00:00 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In this paper, inertia friction welding (IFW) is used to enable a high-quality and efficient joint between 2205 duplex stainless steel and 316 L stainless steel. Specifically, stainless steel bars (2205/316 L) with a diameter of 35 mm and length of 120 mm are used. In addition, the effect of IFW speed on the microstructure and properties of welded joints is assessed using scanning electron microscopy, electron backscattered diffraction, energy dispersive X-ray spectroscopy, microhardness test, and tensile tests. The results indicate that dynamic recrystallization of the microstructure of joints occurs during IFW welding, which causes grain refinement. The diffusion of Ni from the 316 L base metal to the 2205 base metal, as well as the diffusion of Cr from the 2205 base metal to the 316 L base metal, results in a strong metallurgical bond between the two materials. In addition, the microhardness of the welding area exceeds that of the base metal (the closer to the weld zone, the greater the microhardness value). The tensile strength of the joints initially increases with increasing IFW speed, but then it starts decreasing beyond a certain point. The optimal welding parameters for achieving high-quality joints between 2205 duplex stainless steel and 316 L stainless steel are as follows: axial pressure = 5 MPa, rotational inertia = 4.17 kg.m(2), and IFW speed = 2700 r/min.
Keyword ：
Dissimilar stainless steel welding Dissimilar stainless steel welding Inertia friction welding Inertia friction welding Joint microstructures Joint microstructures Mechanical properties Mechanical properties
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zheng, Kaikui , Yang, Zike , Mou, Gang . Effect of inertia friction welding speed on microstructure and mechanical properties of 2205/316L stainless steel joints [J]. | MATERIALS TODAY COMMUNICATIONS , 2023 , 35 . |
| MLA | Zheng, Kaikui et al. "Effect of inertia friction welding speed on microstructure and mechanical properties of 2205/316L stainless steel joints" . | MATERIALS TODAY COMMUNICATIONS 35 (2023) . |
| APA | Zheng, Kaikui , Yang, Zike , Mou, Gang . Effect of inertia friction welding speed on microstructure and mechanical properties of 2205/316L stainless steel joints . | MATERIALS TODAY COMMUNICATIONS , 2023 , 35 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Duplex stainless steel (DSS) is recently considered as a promising candidate to replace traditional bronze-based alloys in medium to large sized ship propellers, due to its combination of advantages including excellent specific strength and corrosion resistance. Directed energy deposition-arc (DED-arc) is chosen as the preferred method to make ship propellers because of its flexibility and high efficiency. However, excessive austenite is formed in the DSS deposits due to severe heat accumulation caused by DED-arc process, which greatly limits the mechanical properties of DSS. Therefore, arc process with lower thermal accumulation effects is crucial for achieving a more ideal phase ratio of DSS deposits. In this study, a variable polarity cold metal transfer (VP-CMT) mode with more lower heat input is applied to the DED-arc process to further reduce the heat accumulation and austenite. Obtained characterization results have confirmed the effectiveness of VP-CMT mode in decreasing austenite volume fraction in both as-deposited and reheated zones, therefore under the same wire feed and travel speeds, VP-CMT produces higher strength DSS components than normal CMT. Also, the lower line energy input of VP-CMT leads to smaller reheated zone in DSS buildup walls, such morphology difference further induces larger tensile property anisotropy than normal CMT sample. VP-CMT shows more potential in controlling the ferrite/austenite ratio to equilibrium than normal CMT.
Keyword ：
Directed energy deposition-arc Directed energy deposition-arc Duplex stainless steel Duplex stainless steel Microstructure Microstructure Variable polarity Variable polarity
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Kanglong , Hua, Xueming , Shen, Chen et al. Effect of variable polarity during cold metal transfer on microstructure and mechanical properties of directed energy deposition-arc built 2209 duplex stainless steel [J]. | ADDITIVE MANUFACTURING , 2023 , 75 . |
| MLA | Wu, Kanglong et al. "Effect of variable polarity during cold metal transfer on microstructure and mechanical properties of directed energy deposition-arc built 2209 duplex stainless steel" . | ADDITIVE MANUFACTURING 75 (2023) . |
| APA | Wu, Kanglong , Hua, Xueming , Shen, Chen , Ding, Yuhan , Xin, Jianwen , Mou, Gang et al. Effect of variable polarity during cold metal transfer on microstructure and mechanical properties of directed energy deposition-arc built 2209 duplex stainless steel . | ADDITIVE MANUFACTURING , 2023 , 75 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Experimental and numerical methods are carried out to analyze the interface formation and defect elimination mechanism during electromagnetic pulse welding T2 to 304L tube by changing the inner tube morphology from original scheme to stage scheme, ramp stage, and location stage. When the original scheme is operated with 13mm lap length, the morphology of interface is divided into four zones containing end unwelded zone, first welded zone, central unwelded zone, and second welded zone due to the different impact velocity and angle during the initial impact process, parallel impact process, and final impact process. The parallel impact leads to the formation of the central unwelded zone, containing (Cu, Fe) solid solution, oxides, nano grains, and amor-phous phase. By providing a suitable impact angle, the ramp scheme (& alpha; = 7 degrees) and location scheme (L = 6.5 mm) can eliminate the defect in the central unwelded zone.
Keyword ：
Defects Defects Deformation and fracture Deformation and fracture Metallic composites Metallic composites Metals and alloys Metals and alloys Welding Welding
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Mou, Gang , He, Lun , Xiang, Hongliang et al. Interface formation and defect elimination mechanism of T2/304L interface during electromagnetic pulse welding process [J]. | MATERIALS LETTERS , 2023 , 349 . |
| MLA | Mou, Gang et al. "Interface formation and defect elimination mechanism of T2/304L interface during electromagnetic pulse welding process" . | MATERIALS LETTERS 349 (2023) . |
| APA | Mou, Gang , He, Lun , Xiang, Hongliang , Lin, Wanfu . Interface formation and defect elimination mechanism of T2/304L interface during electromagnetic pulse welding process . | MATERIALS LETTERS , 2023 , 349 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
