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美国金属材料协会于1982年10月在路易斯安那州举行了年会。会上讨论了金属成形、铸造、焊接、热处理、精加工、材料试验和工具等方面许多基础理论问题,并对三项新材料技术引起了极大的兴趣和关注。 1.复式不绣钢 按照传统的分类方法,绝大多数不锈钢根据其金相组织,可分为奥氏体、铁索体及马氏体三类不绣钢。而复式不锈钢则具有双重的金相组织(马氏体——奥氏体),目前这种复式不锈钢中的一些品种,已获得实际应用。它克服了马氏体不锈钢在
The American Society for Metal Materials held its annual meeting in Louisiana in October 1982. The meeting discussed many basic theoretical issues in metal forming, casting, welding, heat treatment, finishing, material testing and tools, and attracted tremendous interest and attention in three new material technologies. 1. Duplex stainless steel According to the traditional classification methods, the vast majority of stainless steel according to its microstructure, can be divided into austenite, ferrite and martensite three types of stainless steel. Duplex stainless steel, on the other hand, has a dual metallographic structure (martensite-austenite). At present, some varieties of this duplex stainless steel have been put into practical use. It overcame martensitic stainless steel