期刊论文

中文

热加工工艺

1001-3814

2018

47

9

219-221

10.14158/j.cnki.1001-3814.2018.09.058

难加工材料高效精密加工湖南省重点实验室开放基金项目

本校为第一机构

使用手工钨极氩弧焊和ER2594焊丝对UNS S32760超级双相不锈钢进行了焊接试验,测试了接头的拉伸性能、弯曲性能,分析了接头的显微组织和拉伸断口形貌。结果表明,焊接接头的力学性能良好,抗拉强度、弯曲性能满足使用要求。接头的拉伸断裂过程是一个准解理断裂过程,拉伸断口属于塑性断裂,具有较好的韧性。焊缝金属组织由铁素体、奥氏体和少量的σ相组成,其奥氏体含量达到50%~70%。

The welding experiments of UNS S32760 super duplex stainless steel were carried out by using manual tungsten arc welding and ER2594 welding wire. The tensile properties and bending properties of the welded joint were tested and the microstructure and the tensile fracture morphologies of the joint were analyzed. The results show that the mechanical properties of the welded joint are good, and the tensile strength and bending performance meet the requirements. The tensile fracture process of the joint is a quasi cleavage fracture process, and the...