A study of dynamic plasticity in austenite stainless steels with a gradient distribution of nanoscale twins

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

11 Scopus Citations
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Author(s)

  • Linli Zhu
  • Chunsheng Wen
  • Chongyang Gao
  • Xiang Guo
  • Jian Lu

Detail(s)

Original languageEnglish
Pages (from-to)49-53
Journal / PublicationScripta Materialia
Volume133
Publication statusPublished - 1 May 2017

Abstract

The dynamic plastic behavior related to the gradient distribution of twin spacing in 304 stainless steel thin wires is investigated experimentally with the strain rate varying from 1 × 10− 3/s to 1.5 × 104/s. Such gradient-nanotwinned structures are prepared by surface mechanical attrition treatment. A mechanism-based dynamic plastic model is developed to describe the strain-rate dependent stress-strain response in gradient-nanotwinned austenite stainless steels. A good agreement between experimental data and simulations was achieved, and further theoretical predictions demonstrated that the dynamic plastic behavior is sensitive to the twin spacing and volume fraction of gradient-nanotwinned region in austenite stainless steel wires.

Research Area(s)

  • Constitutive model, Dynamic plasticity, Gradient-nanotwinned austenite stainless steels, Strain rate, Twin spacing