铸造2017，Vol.66Issue(12)：1317-1321,1325,6.
含Ti铸造双相不锈钢组织与耐腐蚀性能研究
Study on Microstructure and Corrosion Resistance of Ti-Cast Duplex Stainless Steel
滕铝丹 1曹静 1张拓 1杨弋涛1
作者信息
- 1. 上海大学材料科学与工程学院, 上海200072
- 折叠
摘要
Abstract
In this paper, the corrosion resistance of Ti-cast duplex stainless steel was investigated by electrochemical test,and compared with non-Ti-cast duplex stainless steel. In order to explore the effect of Ti element, the microstructure of Ti-cast duplex stainless steel was observed and the qualitative analysis of carbides was carried out. The hardness was measured by Brinell hardness tester. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to observe the surface morphology of non-corrosion and corrosion samples. The results show that the types of carbides in Ti-cast duplex stainless steel are Cr23C6 and (Ti, Nb) C, Ti can reduce the formation of Cr23C6 and Cr-rich phase in the cast duplex stainless steel, and improve the performance of corrosion resistance. The austenite was weak phase in Ti-cast duplex stainless steel, pitting mainly occurred in the vicinity of the Cr-rich area in the austenite and at the phase boundary of ferrite and austenite.关键词
Ti/铸造双相不锈钢/耐腐蚀性能/富Cr区Key words
Ti/cast duplex stainless steel/corrosion resistance/Cr-rich area分类
矿业与冶金引用本文复制引用
滕铝丹,曹静,张拓,杨弋涛..含Ti铸造双相不锈钢组织与耐腐蚀性能研究[J].铸造,2017,66(12):1317-1321,1325,6.
