依据d电子合金理论,设计了新型节镍00Cr19Mn6Ni0.5N0.2 (DSSs)系列双相不锈钢,同时研究了W、Mo、Cu单独添加对该系列双相不锈钢显微组织、力学及腐蚀性能的影响.结果表明:Cu可以显著扩大奥氏体相区,Mo和Cu能够适当提高材料的腐蚀性能,W和Mo可以不同程度的提高室温拉伸性能,该系列新型双相不锈钢的屈服强度、抗拉强度和延伸率分别达到360、880 MPa和35%以上.实验合金中没有发现sigma相的析出,与理论设计结果基本一致.
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