机械制造与自动化Issue(1)：55-57,92,4.DOI:10.19344/j.cnki.issn1671-5276.2018.01.016
高氮钢双面双弧TIG焊接接头组织性能研究
Researching on Microstructure and Properties of Joints of HNS by DSAW
侯瑶 1王克鸿1
作者信息
- 1. 南京理工大学 材料科学与工程学院,江苏 南京210094
- 折叠
摘要
Abstract
The paper aims to research on the weldability of 7 mm thick high nitrogen austenitic stainless steel by DSAW.By adjusting the composition of Ar+N2protection gas, the microstructure, hardness, mechanical properties of the welded joints are studied. The results show that the nitrogen content in the weld has significant effect on the weld solidification mode and microstructure.The solidifi-cation mode is A and the microstructure is single austenite;the micro-hardness of the weld metal zone changes with the N2-content change,and the hardness value of weld metal zone is lower than are of the base metal,but higher than one of HAZ,it is the first to increase the fensile strength of the joint,the last to reduce it. The tensile fractures are ductile fracture at the welding position.关键词
高氮奥氏体不锈钢/双面双弧TIG焊接/微观组织/力学性能Key words
high nitrogen steel/DSAW/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
侯瑶,王克鸿..高氮钢双面双弧TIG焊接接头组织性能研究[J].机械制造与自动化,2018,(1):55-57,92,4.
