经济型双相不锈钢S32101的组织性能与应用.docVIP

经济型双相不锈钢S32101的组织性能与应用 　　摘要：为降低双相不锈钢的成本，并改善其热加工性能和焊接性，增加相对于其他类型不锈钢材料的竞争优势，自2000年以来，开发低镍量且不含钼或仅含少量钼的经济型双相不锈钢成为双相不锈钢材料研发的重要发展趋势。2006年奥托昆普公司（Outokupmu）率先开发出经济型双相不锈钢S32101，并获得显著成功，该材料制成的卷板、中厚板和棒材产品已在储罐、桥梁、沿海建筑、核电等领域得到广泛应用。目前S32101等经济型双相不锈钢已被纳入美国ASTM标准，标准牌号为S32101。本文重点介绍了经济型双相不锈钢S32101的组织、性能及应用，尤其是力学性能、腐蚀性能和焊接性能，并将其与奥氏体不锈钢304L进行了相应的对比。结果显示双相不锈钢S32101成本低于奥氏体不锈钢304L，力学性能和耐点蚀性能则优于奥氏体不锈钢304L，是一种经济的替代材料，有望获得更广泛应用。 　　关键词：经济型双相不锈钢；S32101；力学性能；腐蚀性能；焊接性能; 　　Abstract: In order to reduce the cost of the duplex stainless steel, and improve its hot-working character and weldability to increase the relative competitive advantages,since 2000, it has become the important development trend of the study of duplex stainless steel material to develop the economical duplex stainless steel with low nickel, and no molybdenum or only a small amount of molybdenum. In 2006, the Outokupmu Company takes the lead in developing the economical duplex stainless steel S32101, and obtains a remarkable success. The plate rolling, medium plate and bar products made of the material have been widely applied in storage tanks, bridges, coastal buildings, and nuclear power. So far,the S32101 economical duplex stainless steel have been included in the United States ASTM standards for No.S32101. This paper introduces the organization, performance and application of economical duplex stainless steel S32101, especially the mechanical properties, corrosion resistance and welding performance, and compaperd with the austenitic stainless steel 304 L.The results show that the cost of duplex stainless steel S32101 is less than that of austenitic stainless steel 304L, while with better mechanical properties and corrosion resistance. Thus, the duplex stainless steel is a kind of economical alternative materials, and is expected to get a more widely used. 　　Keywords: economical duplex stainless steel; S32101; mechanical properties; corrosion resistance; weldability; 　　中图分类号：TF764+.1文献标识码：A 文章编号： 　　0 序言 　　铁素体-奥氏体双相不锈