Hetero-deformation-induced stress in additively manufactured 316L stainless steel

Decheng Kong; Chaofang Dong; Xiaoqing Ni; Zhang Liang; Cheng Man; Xiaogang Li

doi:10.1080/21663831.2020.1775149

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Hetero-deformation-induced stress in additively manufactured 316L stainless steel

Original Reports | 更新时间：2026-08-19

- Hetero-deformation-induced stress in additively manufactured 316L stainless steel
- Materials Research Letters Vol. 8, Issue 10, Pages: 390-397(2020)
- 作者机构：
  
  1. a Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing Beijing People’s Republic of China
  2. b Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge
  3. a Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing
  4. c Shanghai Engineering Research Center of 3D Printing Materials Shanghai Research Institute of Materials
  5. d School of Materials Science and Engineering Ocean University of China
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1775149
  CLC：
- Online First：04 June 2020，
  
  Published：2020
- 稿件说明：
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Decheng Kong, Chaofang Dong, Xiaoqing Ni, et al. Hetero-deformation-induced stress in additively manufactured 316L stainless steel[J]. Materials Research Letters, 2020, 8(10): 390-397.
DOI：

Decheng Kong, Chaofang Dong, Xiaoqing Ni, et al. Hetero-deformation-induced stress in additively manufactured 316L stainless steel[J]. Materials Research Letters, 2020, 8(10): 390-397. DOI： 10.1080/21663831.2020.1775149.

摘要

Abstract

Heterogeneous cellular structure combined with bimodal grain structure contributed to the high hetero-deformation-induced (HDI) stress in selective laser melted 316L stainless steel (SLMed 316L SS) and high grain boundary density at molten pool boundaries and thick cellular boundaries inside grains both acted as hard domains. However

the HDI hardening rate caused by cellular boundary was lower compared with the traditional grain boundary due to its weaker dislocation motion resistance. Under high deformation

massive deformation-induced twins penetrated the cellular boundary and distorted its configuration; therefore

grain boundary heterogeneity dominated the overall HDI stress in SLMed 316L SS after large deformation.

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Related Institution

c Collaborative Innovation Center Northwestern Polytechnical University

b Research & Development Institute Northwestern Polytechnical University in Shenzhen Shenzhen People’s Republic of China

a State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi’an People’s Republic of China

a State Key Laboratory of Solidification Processing Northwestern Polytechnical University

c Materials Genome Initiative Center Shanghai Jiao Tong University

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