The Effect of Drawing Deformation Rate Induced Inhomogeneous Local Distortion on Phase Transformation of 304H Stainless Wire

Qinhua Xu; Zhixian Peng; Jianxin Zhu; Mingyang Li; Yong Zong; Lei Yan; Chaoqun Li; Ke Peng; Zhaoyang Cheng; Jing Liu

doi:10.3390/met10101304

journal article Open Access Sep 29, 2020

The Effect of Drawing Deformation Rate Induced Inhomogeneous Local Distortion on Phase Transformation of 304H Stainless Wire

Qinhua Xu Zhixian Peng

Jianxin Zhu Mingyang Li

Yong Zong Lei Yan

Chaoqun Li

Ke Peng

Zhaoyang Cheng Jing Liu

Metals Vol. 10 No. 10 pp. 1304 · MDPI AG

View at Publisher Save 10.3390/met10101304

Abstract

The micro/macro magnetic properties, local element distribution, martensite transformation, and mechanical properties of 304H stainless wires are determined for two cold drawing chains. Finite element simulations are used to analyse the local strain and heat generation. The results show that there is obvious inhomogeneity in the magnetic properties, strain/stress relationship, and strain-induced heat within the drawn wires. Comparing wires with the same total strain, a larger area reduction of previous drawing processes contributes to a higher volume of the martensite phase, while a smaller area reduction of the first process results in an inhibited phase transformation. A higher single strain in the first drawing process leads to additional heat generation at the subsurface of the wire, which would eventually retard the martensite transformation. The inhomogeneous deformation-induced differences in the grain size affect the stability of austenite and transform the final martensite.

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Published: Sep 29, 2020
Vol/Issue: 10(10)
Pages: 1304
License: View

Authors

Q

Qinhua Xu