Journal
MATERIALS RESEARCH LETTERS
Volume 6, Issue 11, Pages 613-619Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/21663831.2018.1523240
Keywords
Metastability; fatigue limit; TRIP; high entropy alloy
Categories
Funding
- National Science Foundation [1435810]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1435810] Funding Source: National Science Foundation
Ask authors/readers for more resources
Metastability-based high entropy alloy design opens a new strategic path for designing high-strength materials. However, high strength is always coupled with poor damage tolerance under cyclic loading conditions (fatigue). To overcome this drawback, here we present grain-refined Fe42Mn28Cr15Co10Si5 exhibiting significantly high fatigue strength as compared with leading transformation induced plasticity steels upon friction stir processing. The enhanced fatigue behavior is attributed to the metastability-promoted E transformation that caused local variation in work-hardening activity near the crack tip, and subsequent crack branching. Thus, decreased phase stability assisted not only in attaining strength but also in making the alloy fatigue-resistant. [GRAPHICS] Impact StatementFatigue resistance of dual-phase TRIP Fe42Mn28Cr15Co10Si5 was evaluated. Metastability-promoted E transformation improved fatigue life due to local enhancement in work-hardening near the crack tip.
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