An investigation of damage healing in high temperature compressive forming process

被引：2

作者：

Zhou, Wenbin ^{[1
]}

Afshan, Shireen ^{[1
]}

Lin, Jianguo ^{[1
]}

机构：

[1] Imperial Coll London, Dept Mech Engn, London SW7 2AZ, England

来源：

18TH INTERNATIONAL CONFERENCE ON METAL FORMING 2020 | 2020年 / 50卷

基金：

英国工程与自然科学研究理事会;

关键词：

Damage healing; High temperature; Compressive forming; Hot rolling; Void closure; Diffusion bonding; DIFFUSIVE SHRINKAGE; VOID CLOSURE; GROWTH; DEFORMATION; MODEL; GRAIN; CALIBRATION; NUCLEATION;

D O I：

10.1016/j.promfg.2020.08.108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Damage healing in steel parts enables them to be reused again without going through the conventional metal recycling/remelting process, thus damage healing is a process with potential for reclaiming products while causing less environmental damage, that is, improving resource efficiency. In this paper, damage healing of a porous free cutting steel during a hot flat rolling process has been investigated. A UMAT subroutine incorporating damage healing models has been utilised which includes two stages: void closure and diffusion bonding. The developed UMAT subroutine captures evolution of void volume fraction (vvf) as a result of plastic compression, to model the void closure process and predict the subsequent healing time. Effects of roll gap geometry factor (RGF), initial porosity size (void volume fraction) on porosity elimination during rolling have been investigated. (C) 2020 The Authors. Published by Elsevier B.V.

引用

页码：602 / 608

页数：7

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