压力容器2017，Vol.34Issue(2)：1-7,7.DOI:10.3969/j.issn.1001-4837.2017.02.001
成形工艺对奥氏体不锈钢焊接接头超低温冲击韧性影响的试验研究
Influence of Plastic Deformation on Impact Toughness of Austenitic Stainless Steel Welding Joint at Ultra-Low Temperature
余王伟 1陈学东 2崔军 1范志超2
作者信息
- 1. 浙江工业大学 机械工程学院,浙江 杭州 310014
- 2. 合肥通用机械研究院 国家压力容器与管道安全工程技术研究中心 安徽省压力容器与管道安全技术重点实验室,安徽 合肥 230031
- 折叠
摘要
Abstract
The influence of plastic deformation and welding on the ultra-low temperature impact toughness of 304 and 304L austenitic stainless steel welded joints was investigated by using Charpy V-notch impact test,X-ray diffraction.The paper also explored the relationship between the impact absorbed energy and the lateral expansion.The results showed that both of the material′s impact absorbed energy and lateral expansion decreased with increasing of the deformation rate.The plastic energy consumed by the plastic deformation showed a similar trend with the impact absorbed energy,and the crack propagation energy was small and stayed unchanged basically.The plastic deformation of 304 and 304L stainless steel induced martensitic transformation to generate martensitic of ε and α′.The welding not only decreased the plastic energy but also reduced the crack propagation energy.There was a similar linear relationship between impact absorbed energy of base metal and heat affected zone,in addition the welding had no obvious influence on the linear relationship.Both of impact absorbed energy and lateral expansion can be a decision index to judge the ultra-low temperature vessels qualified.关键词
奥氏体不锈钢/焊接接头/塑性变形/冲击吸收能量/侧向膨胀量/形变诱导马氏体Key words
austenitic stainless steel/welding joint/plastic deformation/impact absorbed energy/lateral expansion/deformation induced martensitic分类
机械制造引用本文复制引用
余王伟,陈学东,崔军,范志超..成形工艺对奥氏体不锈钢焊接接头超低温冲击韧性影响的试验研究[J].压力容器,2017,34(2):1-7,7.
