期刊
MATERIALS SCIENCE AND TECHNOLOGY
卷 35, 期 5, 页码 577-584出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670836.2019.1573525
关键词
High-entropy alloy; welding; microstructure; texture; mechanical properties
资金
- Fundamental Research Funds for the Central Universities of China [2018B22514, 2018B59614]
- National Natural Science Foundation of China [51805145, 51879089]
- Natural Science Foundation of Jiangsu Province [BK20160284, CJ20180045]
To investigate the microstructural development and mechanical properties of friction stir welded high-entropy alloy, the stirring process and the air cooling period were separated for discussion. The texture component developed from A* {111} to A {111} in the stirring stage, and finally changed to B {112} in the subsequent air cooling stage caused by the multiple mechanisms including discontinuous dynamic recrystallization, continuous dynamic recrystallization, static recovery and selected grain growth. This work also demonstrated that the static recovery and the selected grain growth during the air cooling stage remarkably deteriorated the microstructure and mechanical properties which is produced during the stirring stage, and it cannot be neglected when investigating the microstructure transformation and mechanical properties during the friction stir welding.
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