微量合金元素对铸造不锈钢力学性能的影响  

Influence of Trace Alloy Elements on the Mechanical Properties of As-cast Stainless Steel

作　　者：严翔[1] 段汉桥[1] 魏伯康[1] 林汉同[1] 

机构地区：[1]华中科技大学材料学院,湖北武汉430074

出　　处：《热加工工艺》2004年第5期10-11,32,共3页Hot Working Technology

摘　　要：利用正交试验研究了微量合金元素(Nb、V、Zr)对18-8型不锈钢铸态组织和力学性能的影响。结果表明:在钢液中存在一定量V、Nb等强碳化物元素时,C能提高不锈钢的抗拉强度和伸长率;Zr对抗拉强度影响显著但对伸长率无明显影响;V对力学性能影响不明显,但与碳的交互作用明显。Influences of trace elements Nb, V and Zr on the mechanical properties of as-cast 18-8 stainless steel were studied by orthogonaldesign experiments. The results show that Nb is the key factor affecting the microstructure and mechanical properties of the as-cast stainless steel, and C can increase the tensile strength and elongation on the basis of existing some elements such as V and Nb, and Zr plays more significant influence on tensile strength but unobvious on elongation, and V has an unobvious influence on mechanical properties but obvious when interacting with C.

关 键 词：正交设计 不锈钢 微量合金元素 力学性能 

分 类 号：TG113.25[金属学及工艺—物理冶金] TG142.71[金属学及工艺—金属学]