一、绪言 随着国家工业的飞速发展,对不銹钢的要求越加迫切。奥氏体不銹钢不仅在各种强烈介质中有高的耐蝕性,而且有良好的范性和焊接性能。目前,在工业上特别在化学工业上获得广泛应用的是18—8型不銹钢,其中含有相当数量的镍,而镍不论在我国或是其他国家都比较稀缺。为了不用或少用镍,生产更多的价廉适用的奥氏体不銹钢代替甚至在性能上超过18-8 I. INTRODUCTION With the rapid development of national industry, the demand for stainless steel becomes more and more urgent. Austenitic stainless steel not only has a high corrosion resistance in a variety of strong media, but also has a good range and welding performance. At present, 18-8 stainless steel, which is widely used industrially, especially in the chemical industry, contains a considerable amount of nickel, and nickel is scarce in our country and other countries. In order to use less or less nickel, austenitic stainless steel to produce more affordable and applicable instead of even in the performance of more than 18-8