电焊机2018，Vol.48Issue(5)：105-108,4.DOI:10.7512/j.issn.1001-2303.2018.05.21
C-276合金TIG焊接头组织与性能
Study on microstructure and properties of TIG welded joint for C-276 alloy
尚立宝 1黄忠宝 1许宏1
作者信息
- 1. 上海板换机械设备有限公司,上海201508
- 折叠
摘要
Abstract
The microstructure characteristics and properties of TIG welded joint of C-276 alloy are studied by OM and other technologies,the corrosion resistance of the weld and base metal in acid and neutral solutions are also investigated.The results show that the microstructure of weld is austenite,and its appearance is columnar and equiaxed.The microstructure of HAZ consists of coarsen austenite and blocky and strip intermetallic compounds.The hardness test shows that the weld microhardness is minimum and about 260 HV.The electrochemical testing indicates that the corrosion resistance of the weld in an acidic environment is weaker than that of the base metal,and the corrosion current density and corrosion rate of the weld are higher than that of the base metal.However,in a neutral environment,the corrosion resistance of the weld is similar to that of the base metal.关键词
C-276合金/奥氏体/显微硬度/腐蚀速率/耐蚀性Key words
C-276 alloy/austenite/microhardness/corrosion rate/corrosion resistance分类
矿业与冶金引用本文复制引用
尚立宝,黄忠宝,许宏..C-276合金TIG焊接头组织与性能[J].电焊机,2018,48(5):105-108,4.
