Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11032057 | Results in Physics | 2018 | 8 Pages |
Abstract
The stress-strain behavior of ferrite and austenite in a commercial 2205 duplex stainless steel was investigated by using nanoindentation test and microstructure-based finite element method (FEM). Results showed that the optimum load range for measuring phase properties in nanoindentation test was from 3000â¯Î¼N to 7000â¯Î¼N. The ferrite has slightly higher average elastic modulus than austenite, while austenite has higher average nanohardness than ferrite. Representative stress-strain curves of ferrite and austenite were determined by means of the power-law hardening and empirical relationship. Based on FEM, the differences in distribution and portion of stress-strain in local phases were visualized, and the overall flow curve of the sample 2205 was extracted, which was in good agreement with the obtained results from uniaxial tensile experiment.
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Authors
Ping Tao, Jian-ming Gong, Yan-fei Wang, Yong Jiang, Yang Li, Wei-wei Cen,