Extraordinary Bauschinger effect in gradient structured copper

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

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)57-60
Journal / PublicationScripta Materialia
Volume150
Online published20 Mar 2018
Publication statusPublished - Jun 2018
Externally publishedYes

Abstract

Bauschinger effect is a well-known phenomenon, in which the tensile stress is higher than the reverse compressive stress. Here we report that the gradient structured copper exhibits an extraordinarily large Bauschinger effect. We propose to use the reverse yield softening, Δσb, as a quantitative parameter to represent the Bauschinger effect. Δσb evolves in the same trend as the back stress with pre-strain, and can be used to evaluate the effectiveness of a heterostructure in producing back stress for superior mechanical properties.

Research Area(s)

  • Bauschinger effect, Geometrically necessary dislocations, Gradient structure, Reverse yield softening, Tensile-compressive test

Citation Format(s)

Extraordinary Bauschinger effect in gradient structured copper. / Liu, Xiaolong; Yuan, Fuping; Zhu, Yuntian; Wu, Xiaolei.

In: Scripta Materialia, Vol. 150, 06.2018, p. 57-60.

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