Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy

Qiaodan Yan; Xin Lin; Jun Yu; Xufei Lu; Weidong Huang

doi:10.1080/21663831.2024.2395433

Chinese

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Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy

Original Report | 更新时间：2026-08-19

- Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy
- Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy
- 材料研究快报（英文） 2024年12卷第11期页码：852-859
- 作者机构：
  
  1. a State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi’an People’s Republic of China
  2. b Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design MIIT China Northwestern Polytechnical University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2024.2395433
  中图分类号：
- 网络首发：2024-08-29，
  
  纸质出版：2024
- 稿件说明：
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Qiaodan Yan, Xin Lin, Jun Yu, 等. Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy[J]. 材料研究快报（英文）, 2024,12(11):852-859.

Qiaodan Yan, Xin Lin, Jun Yu, et al. Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy[J]. Materials Research Letters, 2024, 12(11): 852-859.
Qiaodan Yan, Xin Lin, Jun Yu, 等. Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy[J]. 材料研究快报（英文）, 2024,12(11):852-859. DOI： 10.1080/21663831.2024.2395433.

Qiaodan Yan, Xin Lin, Jun Yu, et al. Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy[J]. Materials Research Letters, 2024, 12(11): 852-859. DOI： 10.1080/21663831.2024.2395433.

摘要

Abstract

The high yield ratio and low strain hardening ability of titanium alloys significantly limit their engineering applications. In this work

a Ti

(at.%) alloy with nanoscale α laths was additively manufactured and achieved a high yield strength of 1274 MPa and a high strain hardening rate up to 40% of the shear modulus. Results show that universal basal/pyramidal dislocation reactions occur during the tensile deformation process. This triggers high-density sessile 〈c 〉 dislocation junctions

which accumulate and pin other mobile dislocations. Consequently

abundant dislocation walls are induced

leading to a strong hetero-deformation-induced strain hardening effect.

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相关机构

a Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences

b School of Materials Science and Engineering University of Science and Technology of China

a Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang People’s Republic of China

a Engineering Research Center of Light-weight Materials and Components (MOE) Key Laboratory for Light-weight Materials Nanjing Tech University

d Weikuang Technology (Suzhou) Co. Ltd.

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