中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 国家微重力实验室
Laser shock peening strengthens additively manufactured high-entropy alloy through novel surface grain rotation

文献类型：期刊论文

作者Bai YJ(白云建); Lyu, GuoJian; Wang YJ(王云江); Chen TY(陈天宇); Zhang K(张坤); Wei BC(魏炳忱); Wei BC(魏炳忱); Zhang K(张坤); Wang YJ(王云江); Bai YJ(白云建)
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2023-04
卷号871页码:144886
ISSN号0921-5093
关键词High -entropy alloy Additive manufacturing Laser shock peening Grain refinement Dislocation slip
DOI10.1016/j.msea.2023.144886
英文摘要Additive manufacturing has flourished as an advanced technique to process metals and alloys. However, this strategy usually introduces undesired defects that deteriorates the mechanical performance of structural materials. Herein laser shock peening (LSP) is proposed as an efficient strengthening approach to reshape the surface morphology of a prototypical dual-phase AlCoCrFeNi high-entropy alloy (HEA) after additive manufacturing, in which remarkable strengthening is achieved. Combined electron back scatter diffraction and transmission electron microscope characterizations reveal that the mechanical enhancement is attributed to the grain refinement and accumulation of dislocations at the impact surface. In extreme condition of LSP, the grain refinement is not accommodated by the conventional dynamic recrystallization anymore, but a novel mechanism of parental columnar grain rotation which can be rationalized by a continuum-level theory from a geometrical perspective. The new mechanism is verified by large-scale atomistic simulations which further recognizes the critical role of multiple unstable dislocation slip and amorphization in formation of smaller grains under shock. Our strategy offers a promising pathway toward polishing morphology of HEAs and thus, prohibiting the potential intrinsic defected induced-mechanical degradation of the additively manufactured metals and alloys via novel microscopic mechanism.
分类号一类
WOS研究方向WOS:000995820700001
语种英语
资助机构National Natural Science Foundation of China [12272392, 11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040303] ; Innovation Program [237099000000170004] ; NSFC [12072344] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
其他责任者Zhang, K ; Wei, BC
源URL[http://dspace.imech.ac.cn/handle/311007/92244]  
专题力学研究所_国家微重力实验室
力学研究所_非线性力学国家重点实验室
作者单位1.(Bai Yunjian, Chen Tianyu, Zhang Kun, Wei Bingchen) Chinese Acad Sci Inst Mech Key Lab Micrograv Natl Micrograv Lab Beijing 100190 Peoples R China
2.(Wei Bingchen) Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China
3.(Wang Yun-Jiang, Zhang Kun, Wei Bingchen) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China
4.(Lyu Guo-Jian, Wang Yun-Jiang) Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China
推荐引用方式
GB/T 7714		 Bai YJ,Lyu, GuoJian,Wang YJ,et al. Laser shock peening strengthens additively manufactured high-entropy alloy through novel surface grain rotation[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,871:144886.
APA 白云建.,Lyu, GuoJian.,王云江.,陈天宇.,张坤.,...&Bai YJ.(2023).Laser shock peening strengthens additively manufactured high-entropy alloy through novel surface grain rotation.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,871,144886.
MLA 白云建,et al."Laser shock peening strengthens additively manufactured high-entropy alloy through novel surface grain rotation".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 871(2023):144886.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。