材料期刊网

本文综合报导了作者对二百余种Cr-Mn-C-N实验钢所进行的有系统研究的主要结果:(1)稳定奥氏体区域.(2)重要相变——马氏体转变、σ相形成及沉淀作用.(3)室温及高温性能及其与钢中化学成分的关系.(4)间隙固溶体强化原理.(5)沉淀作用与高温强度的关系.(6)加入V,W,Mo,Nb,Si及B诸元素的影响.(7)工业上可试用的领域.

Over 200 Cr-Mn-C-N experimental steels have been systematically studied bya combination of microscopic examination,X-ray diffraction,electrolytic extraction,chemical analysis,hardness and magnetic measurements,density and dilatometricmethods,oxidation test,tensile tests at both room-and elevated-temperatures,creep-rupture test,etc.,and the main findings are presented as follow:(1)Stable austenitic region.(2)Solid state reactions:martensitic transformation,precipitation reactions,and formation of sigma phase.(3)Room-and elevated-temperatures properties,and their relation to the che-mical composition of the steels.(4)Strengthening effect of interstitial solid solution.(5)Effect of precipitation reaction on elevated-temperature strength.(6)Effect of V,W,Mo,Nb,B and Si.(7)Tentative recommendation for indus rial applications.