[P] P239~P252

[P248] Thermal Activation in Yielding of Single-Crystalline Tungsten

*Florian Tropper^1,2, Ohmura Takahito¹ (1. National Institute for Materials Science, 2. Kyushu University Department Materials (Graduate Student))

Keywords:Nanoindentation、Tungsten、Plasticity、Thermal Activation、Pop-In

Yielding in sx-tungsten is examined by high-temperature nanoindentation. Main parameters analyzed are hardness and pop-in behavior. Yield stress and strain hardening are estimated via a novel method.