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author:

Zhou, Baoxue (Zhou, Baoxue.) [1] | Yang, Rong (Yang, Rong.) [2] | Wang, Bingshu (Wang, Bingshu.) [3] (Scholars:汪炳叔) | Deng, Liping (Deng, Liping.) [4] (Scholars:邓丽萍) | Zhang, Yonghao (Zhang, Yonghao.) [5]

Indexed by:

EI Scopus SCIE

Abstract:

Twinning activity of pure titanium during rolling at room and cryogenic temperatures was investigated by electron backscattered diffraction (EBSD) technology. Because cryogenic temperature facilitates twin formation, cryogenically processed samples exhibited greater hardness than those processed at room temperature. Schmid factor (SF) analysis of twin variant selection behavior revealed that the variant selection was insensitive to temperature. Both moderate and low SF variants formed, which led to multiple variants within the grain. Furthermore, twin-twin intersections were more likely to occur at cryogenic temperatures due to the coexistence of multiple variants and twin types within a grain. At a strain of 20%, higher-order sequential twinning was common during rolling at cryogenic temperature, indeed, a twinning sequence of CTW-ETW-CTW-ETW by lattice rotation was observed. The formation of low SF and anomalous variants during rolling can be explained by displacement gradient tensors and geometric compatibility factors.

Keyword:

Cryogenic temperature High-order sequential twinning Low SF variants Pure titanium Variant selection

Community:

  • [ 1 ] [Zhou, Baoxue]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Yang, Rong]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Wang, Bingshu]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Deng, Liping]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Zhang, Yonghao]China Acad Engn Phys, Inst Machinery Mfg Technol, Mianyang 621999, Sichuan, Peoples R China

Reprint 's Address:

  • 汪炳叔 邓丽萍

    [Wang, Bingshu]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China;;[Deng, Liping]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350108, Fujian, Peoples R China

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Source :

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

ISSN: 0921-5093

Year: 2021

Volume: 803

6 . 0 4 4

JCR@2021

6 . 1 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:142

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 40

SCOPUS Cited Count: 37

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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