Transformation Temperatures and Welding Residual Stresses in Ferritic Steels
Transformation Temperatures and Welding Residual Stresses in Ferritic Steels
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铁素体钢的转变温度和焊接残余应力
DOI：
10.1115/pvp2007-26544
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发表时间：
2007
影响因子：
0.8
通讯作者：
L. Karlsson
中科院分区：
文献类型：
--
作者：
J. Francis;H. Stone;S. Kundu;R. Rogge;H. Bhadeshia;P. Withers;L. Karlsson
焊缝附近的残余应力对结构的完整性有很大的影响。本文研究了焊缝填充金属的马氏体起始温度可调节到何种程度以减轻铁素体钢焊缝中的残余应力分布。采用不同马氏体起始温度的填充金属，在12mm厚钢板上采用手工电弧焊沉积了3道单道坡口焊缝。然后用中子衍射表征了它们的残余应力分布。结果表明，较低的相变温度可使熔合区内及熔合区附近的有害应力分布减小。本文报道了实验方法，并从设计更好的焊接耗材的角度对实验结果进行了解释。版权所有©2007由ASME和加拿大国家研究委员会
Residual stress in the vicinity of a weld can have a large influence on structural integrity. Here the extent to which the martensite-start temperature of the weld filler metal can be adjusted to mitigate residual stress distributions in ferritic steel welds has been investigated. Three single-pass groove welds were deposited by manual-metal-arc welding on 12mm thick steel plates using filler metals designed to have different martensite-start temperatures. Their residual stress distributions were then characterised by neutron diffraction. It was found that a lower transformation temperature leads to a potentially less harmful stress distribution in and near the fusion zone. The experimental method is reported and the results are interpreted in the context of designing better welding consumables.Copyright © 2007 by ASME and National Research Council Canada