Influence of transformation induced plasticity on simulated results of welding residual stress in low temperature transformation steel
Influence of transformation induced plasticity on simulated results of welding residual stress in low temperature transformation steel
复制标题
相变诱发塑性对低温相变钢焊接残余应力模拟结果的影响
DOI：
10.1016/j.commatsci.2013.05.023
复制
发表时间：
2013-10-01
影响因子：
3.3
通讯作者：
Murakawa, Hidekazu
中科院分区：
文献类型：
--
作者：
Deng, Dean;Murakawa, Hidekazu
中碳钢或碳当量足够的合金钢熔焊时，固态相变对焊接残余应力的形成有重要影响。采用数值模拟方法预测该类钢的焊接残余应力时，应充分考虑热-冶金-力学行为的耦合作用。已经认识到，与固态相变相关的三个因素潜在地影响焊接残余应力的形成。这三个因素分别是马氏体-马氏体（贝氏体）相变引起的体积变化、组织变化引起的力学性能变化和相变诱发塑性。本文提出了一种考虑相变影响的低温相变钢焊接残余应力预测方法。主要目的是研究相变诱发塑性对焊接残余应力的影响，通过发展的数值方法。研究结果对焊接残余应力场的建模具有重要的指导意义。(c)2013爱思唯尔有限公司版权所有。
When medium carbon steel or alloy steel with sufficient carbon equivalent is joined by fusion welding process, solid-state phase transformation has significant influences on the formation of welding residual stress. To predict welding residual stress in such steels using numerical simulation method, the coupling of thermo-metallurgical-mechanical behaviors should be carefully considered. It has been recognized that three factors related to solid-state phase transformation potentially affect the formation of welding residual stress. These three factors are volume change caused by austenite-martensite (bainite) transformation, mechanical properties variation due to microstructure change and transformation induced plasticity. In this study, a computational approach was developed to predict welding residual stress in low temperature transformation steel with considering phase transformation. The main objective is to examine the influence of transformation induced plasticity on the welding residual stress by means of the developed numerical method. The conclusions drawn by the present work potentially have important directive to modeling welding residual stress field. (c) 2013 Elsevier B.V. All rights reserved.