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author:

Chi, S. (Chi, S..) [1] | Zhu, R. (Zhu, R..) [2] | Du, P. (Du, P..) [3] | Yuan, B. (Yuan, B..) [4] | Peng, C. (Peng, C..) [5] | Zhang, L. (Zhang, L..) [6] | Chen, J. (Chen, J..) [7]

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Scopus

Abstract:

The near-α Ti60 alloy, renowned for its exceptional high-temperature performance, is highly sought after for aerospace applications. This study optimized the laser powder bed fusion (LPBF) parameters to fabricate Ti60 alloy with a density approaching 99.84 %. The rapid solidification process inherent to LPBF results in an ultrafine martensitic microstructure within the Ti60 alloy, characterized by the presence of intricate α′ martensite laths within the β columnar grains. The alloy's crystallographic structure is distinguished by a high density of dislocations and twins, which significantly augment its mechanical properties at both ambient and elevated temperatures. At room temperature, the alloy exhibits a tensile strength of 1402 MPa coupled with a elongation of 12.3 %. At 600 °C, these values increase to 686 MPa and 25.6 % elongation, respectively. These findings have the potential to significantly advance the application of LPBF-ed Ti60 alloy in the aerospace sector, while also offering a pivotal reference for the additive manufacturing of other high-performance titanium alloys. © 2025 The Authors

Keyword:

Laser powder bed fusion Mechanical properties Microstructure Ti60 alloy

Community:

  • [ 1 ] [Chi S.]School of Advanced Manufacturing, Fuzhou University, Jinjiang, 362200, China
  • [ 2 ] [Chi S.]Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic University, Shenzhen, 518055, China
  • [ 3 ] [Zhu R.]Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic University, Shenzhen, 518055, China
  • [ 4 ] [Du P.]Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic University, Shenzhen, 518055, China
  • [ 5 ] [Yuan B.]Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic University, Shenzhen, 518055, China
  • [ 6 ] [Peng C.]Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic University, Shenzhen, 518055, China
  • [ 7 ] [Zhang L.]Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic University, Shenzhen, 518055, China
  • [ 8 ] [Chen J.]School of Advanced Manufacturing, Fuzhou University, Jinjiang, 362200, China

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Source :

Journal of Materials Research and Technology

ISSN: 2238-7854

Year: 2025

Volume: 35

Page: 3968-3979

6 . 2 0 0

JCR@2023

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ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 1

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