[G] Al・Al合金／新領域

16:15 〜 16:30

[37] Low Cycle Fatigue Behavior of Inconel 718: stress decomposition and CP modelling

○ルドワニ モヒート ムルリダール^1,2、Tripathy Bikash²、Yoshinaka Fumiyoshi²、Rintaro Ueji²、Kanjarla Anand¹ (1. Indian Institute of Technology, Madras、2. National Institute for Material science)

キーワード：

Low cycle fatigue、backstress、IN718、crystal plasticity

Low-cycle fatigue of Inconel 718 with solution-annealed and standard heat-treated microstructures was investigated. SHT showed continuous cyclic softening, whereas SA exhibited initial hardening followed by stabilization. Crystal plasticity modeling explained the evolution of backstress and effective stress.