Influence of PWHT on the Residual Stress in Under-Matching Welded Joint

被引：6

作者：

Qian, Y. W. ^{[1
]}

Zhao, J. P. ^{[1
]}

机构：

[1] Nanjing Tech Univ, Sch Mech & Power Engn, Nanjing, Jiangsu, Peoples R China

来源：

PRESSURE VESSEL TECHNOLOGY: PREPARING FOR THE FUTURE | 2015年 / 130卷

关键词：

under-matching; PWHT; residual stress;

D O I：

10.1016/j.proeng.2015.12.249

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The under-matching welded joint is commonly used in engineering practice and the postweld heat treatment (PWHT) is the common method to reduce the residual stress in the welded joint, while the research on the under-matching welded joint after PWHT is few. The finite element software-ABAQUS is used to simulate the welding process and PWHT process of the under matching welded joint which is the combination of CF62(base metal) and 316L(weld) in this paper. The discussion of the influence of PWHT on the residual stress in the under-matching welded joint is based on the experimental verification. The results show that PWHT can reduce the residual stress in the under-matching welded joint significantly, especially the lower transverse stress than the longitudinal stress. The influence on the under-matching welded joint is equal to that on the equal matching welded joint. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：966 / 972

页数：7

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