[P] P60~P73 Mechanical Properties

[P73] Appearance of grain boundary sliding in electrodeposited nanocrystalline FeCoNi medium-entropy alloy

○SOTA SATOMI¹, Ryuhei Mimura³, Atuya Watanabe², Yorinobu Takigawa² (1. Grad. Student, Dept. Mater. Sci., Osaka Metro. Univ., 2. Dept. Mater. Sci., Osaka Metro. Univ., 3. Osaka Metro. Univ.（Present: Godo Steel, Ltd.）)

Keywords:

high temprature deformation,medium-entropy alloy,grainboundary sliding,strain-rate sensitivity

High temprature deformation behavior in electrodeposited nanocrystalline FeCoNi medium-entropy alloy was charactaraised via tensile test at 480 °C. A relationship between the flow stresses and the strain rates followed a stress exponent, n~3. The grainboundary sliding was observed with the higher stress compared than pure Ni.