Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 772, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2019.138661
Keywords
High entropy alloys; Gradient structure; Mechanical property; Synergetic strengthening mechanism; Back stress strain hardening
Categories
Funding
- National Natural Science Foundation of China [51871178, 51621063]
- State Key Laboratory for Mechanical Behavior of Materials [20171910]
Ask authors/readers for more resources
In this work, gradient structure is successfully produced in the surface of FCC structured (Fe40Mn40Co10Cr10)C-3.3 high entropy alloy (HEA) by using surface mechanical rolling treatment (SMRT). The depth of surface gradient layer with higher hardness increases with increasing the SMRT passes. The Introducing of gradient layer not only significantly improves the strength of HEAs but also remains sufficient ductility. The ultra-high strength of the gradient structured HEA is mainly related to the synergetic strengthening mechanism, while the comparatively good ductility is ascribed to the back stress strain hardening mechanism. Gradient structure design provides a novel strategy for producing HEM with high performance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available