材料导报 2022, Vol. 36 Issue (Z1): 21120176-5
金属与金属基复合材料
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多次补焊对304不锈钢焊接接头性能的影响
刘鹏1,2 , 马吉恩1 , 方攸同1 , 李刚2
1 浙江大学电气工程学院,杭州 310058 2 沈阳鼓风机集团核电泵业有限公司,沈阳 110142
Influence of Multiple Repair Welding on Properties of 304 Stainless Steel Welded Joint
LIU Peng1,2 , MA Jien1 , FANG Youtong1 , LI Gang2
1 College of Electrical Engineering, Zhejiang University, Hangzhou 310058, China 2 Shenyang Blower Group Co., Ltd., Shenyang 110142, China
摘要 304不锈钢焊接接头具有良好的力学性能。对于一些具有焊接缺陷的接头,可以采取补焊或多次补焊的方式进行修复,但不同补焊次数会影响304不锈钢焊接接头的力学性能。本工作通过拉伸、弯曲和冲击试验,以及金相组织和断口SEM分析,对经过多次补焊的304不锈钢焊接接头处的力学性能进行研究。试验结果表明,随着补焊次数增加,补焊区力学性能和延伸率逐渐降低;试件均为韧性断裂,一次补焊界面断裂在融合线附近,二次补焊界面断裂在热影响区。
关键词:
补焊
304不锈钢
拉伸性能
金相组织
韧性断裂
Abstract: 304 stainless steel welded joints have good mechanical properties. Some joints with welding defects can be repaired by repair welding or multiple repair welding, but different repair welding times will affect the mechanical properties of 304 stainless steel welded joints. In this work, the mechanical properties of 304 stainless steel welded joints repaired for many times has been analyzed by tensile, bending and impact tests, and metallographic structure and fracture SEM technologies. The results showed that the mechanical properties and elongation of the repair welding area decreased gradually with the increase of repair welding times. The test pieces were ductile fracture, of which the primary repair wel-ding interface fracture was near the fusion line and the secondary repair welding interface fracture was in the heat affected zone.
Key words:
repair welding
304 stainless steel
tensile properties
metallographic structure
ductile fracture
出版日期: 2022-06-05
发布日期: 2022-06-08
基金资助: 辽宁省教育厅新型智库项目(JYT2020141);辽宁省教育厅重点攻关及服务地方项目(JYT2020156)
通讯作者:
liupeng@shengu.com.cn
作者简介: 刘鹏,2003年毕业于沈阳农业大学机械设计制造及自动化专业,2008年沈阳农业大学农业工程专业工程硕士毕业。曾在国家级期刊《水泵技术》上发表多篇论文。现为沈阳鼓风机集团核电泵业有限公司副总经理,浙江大学电气工程学院工程在读博士研究生。
引用本文:
刘鹏, 马吉恩, 方攸同, 李刚. 多次补焊对304不锈钢焊接接头性能的影响[J]. 材料导报, 2022, 36(Z1): 21120176-5.
LIU Peng, MA Jien, FANG Youtong, LI Gang. Influence of Multiple Repair Welding on Properties of 304 Stainless Steel Welded Joint. Materials Reports, 2022, 36(Z1): 21120176-5.
链接本文:
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http://www.mater-rep.com/CN/Y2022/V36/IZ1/21120176
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