(一)绪言 奥氏体不銹钢具有许多优良性能:耐触性高、满意的力学性能、优良的工艺性能(焊接性等)。所谓18—8型的奥氏体不銹钢(即1Cr18Ni9和1Cr18Ni9Ti等钢号),在世界各国已得到广泛的应用。唯其含有较多的镍(8～9％),而镍是我国目前极感缺乏的资源。为使我国冶金工业部门能以更多的奥氏体不銹钢供给日益发展着的化学工业、石油工业、国防等部 (A) Introduction Austenitic stainless steel has many excellent properties: high resistance to touch, satisfactory mechanical properties, excellent process performance (weldability, etc.). The so-called 18-8 type austenitic stainless steel (ie 1Cr18Ni9 and 1Cr18Ni9Ti and other steel), in various countries in the world has been widely used. Only contains more nickel (8 ~ 9%), and nickel is the current lack of resources in our country. In order to make China’s metallurgical industry to provide more austenitic stainless steel growing chemical industry, the petroleum industry, the Ministry of Defense and other ministries