[S4] Materials Science and Technology in High-Entropy Alloys (XIII)

3:05 PM - 3:25 PM JST(6:05 AM - 6:25 AM UTC)

[S4.19] Local mechanical properties and HAADF-STEM analysis of atomic structures and segregation at Σ3 grain boundaries in the CrMnFeCoNi high-entropy alloy

○Takuya Watanabe¹, Kazuki Yamamuro¹, Masayuki Tsushida², Seiichiro Ii³, Takateru Yamamuro², Sadahiro Tsurekawa⁴ (1. Kumamoto Univ. GSST, 2. Kumamoto Univ. Tech, 3. NIMS, 4. Kumamoto Univ. FAST)

Keywords:

high-entropy alloy,grain boundary,nanoindentation,STEM

The purpose of this research was to reveal the local mechanical properties of GBs (grain boundaries) in the CrMnFeCoNi high-entropy alloy by nanoindentation and to clarify the GB structure and GB segregation of Σ3 GBs using HAADF-STEM observation and EDS analysis.