氮对Fe－Cr－Ni高温合金组织与性能的影响  

Effects of Nitrogen on the Structure and Properties of the Fe-Cr-Ni High-temperature Alloy

作　　者：刘俊诚[1] 潘正伟[1] 王执福[1] 王守仁[1] 黄重伯 

机构地区：[1]西北工业大学,山东工业大学

出　　处：《铸造》1995年第9期20-22,共3页Foundry

摘　　要：在所设计的高碳Ｆｅ－Ｃｒ－Ｎｉ合金中，添加０．２０～０．４０％的氮，可以固溶强化合金基体，延迟晶粒粗化，抑制碳化物沿晶界过量析出与长大，改善碳化物形貌与分布以及碳化物与晶粒基体间的结合，强化合金的晶粒与晶界，从而提高合金的高温强度。氮含量不超过０．４５％时，对合金的工艺性无不良影响。The additions to 0. 20～0. 40 %N to the Fe-Cr-Ni high-temperature alloy had the effect of solution strengthening on the matrix, put off coarsing of grains, suppressed the precipitation of carbides and its growth excessively along grain boundaries, improved carbide morphology and distribution and its conjunction with matrix, strengthened alloy grains and the grain-boundaries, thus increasing high-temperature strength of Fe-Cr-Ni alloy. The nitrogen at levels up to 0. 45% had no any of harmful effect on technological

关 键 词：氮 性能 耐热合金 组织 

分 类 号：TG132.32[一般工业技术—材料科学与工程]