Study on irradiation effect in stress-strain response with CPFEM during nano-indentation
作者： Pandong Lin , Junfeng Nie , Meidan Liu
DOI: 10.1016/J.NME.2020.100737
关键词: Experimental work 、 Constitutive equation 、 Nanoindentation 、 Stress–strain curve 、 Ion 、 Irradiation 、 Finite element method 、 Materials science 、 Composite material 、 Hardening (metallurgy)
摘要: Abstract The influence of irradiation on the constitutive stress-strain response A508-3 steel is investigated by a series nano-indentation simulations with Crystal Plasticity Finite Element Model (CPFEM). In this regard, crystal plasticity model based densities dislocations and defects for body-centered cubic (BCC) concern summarized numerically implemented at first. Moreover, method that converts hardness vs. half-angle (θ) into stress strain introduced briefly. Based model, numerical results are challenged in comparison experimental data found excellent agreement reported results, from which, validity verified. Meanwhile, we further analyze depth-dependent damage distribution ion offer equivalent value terms displacement per atom (dpa) uniform fashion, which can definitely deepen comprehension hardening ion-irradiated guide relevant work.
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