The study of the influence of copper on the corrosion resistance and hot mechanical properties of 16Cr-xCu stainless steels

• Main Authors: Hsu-Chi Chuang, 莊旭旗
• Other Authors: Dong-Yih Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/93599227887904015573

碩士 === 義守大學 === 材料科學與工程學系 === 92 === This study is to investigate the effects of the 16Cr-XCu ferritic stainless steel dopped with suitable copper content after annealing at 810℃. The metallographic microstructure, mechanical properties and corrosion resistance of materials are tested. The application of Cu-contented stainless steels is extensively spread in industry. There are just a few studies about the mechanical properties and corrosion resistance of Cu-contented stainless steels in Taiwan until now. The results of this study can be valuable reference for the research and production of copper contented stainless steels. This study used 16Cr ferritic stainless steel dopped with suitable copper. After cold rolling and pickling the samples were annealing. The microstructure of the alloyed samples can be characterized with some Cu content precipitates in the matrix. The Gleeble 2000 hot tensile test machine was used for the study of hot tensile properties. The test results indicated that the most suitable hot working temperature of this new developed material should be 1100℃. The hardness and tensile strength of materials increased with the increasing of copper content at room temperature. It can be noted that the intergranular corrosion resistance of copper contented stainless steels was reduced. On the other hands, their pitting corrosion resistance decreased with the increasing of copper contents.