Fe－C马氏体室温时效转变的研究I─有序化  

AGING OF Fe─ CMARTENSITE I.ORDERING

作　　者：任晓兵 王笑天 清水谦一 唯木次男 

机构地区：[1]日本金泽工业大学,日本大阪大学

出　　处：《西安交通大学学报》1994年第7期15-20,共6页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金及国家教委博士点基金

摘　　要：利用透射电镜对Ｆｅ－１．８３Ｃ马氏体室温时效所产生的有序化进行了详细的研究。结果表明：铁碳马氏体的有序相有两种，一种是具有Ｆｅ４Ｎ结构的普通有序相γ＇－ＦｅｘＣ（１），另一种是由它衍生出来的长周期有序相，称为γ－ＦｅｘＣ（Ⅱ），ｘ＝４～１０．两种有序相同时存在于马氏体的时效组织中．经研究确定的有序相晶体结构可以解释所有的实验衍射结果．Tmis paper deals with the ordering of Fe-1.83C(Wt%)martensite during aging at roomtemperature. It is found that there exist two ordered phases during aging,one is a conven-tional off-stoichiometric ordered phase γ'- FexC(I),which is isomorphous with Fe4N,andthe other is a long-period ordered phase γ'-FexC(Ⅱ)(x=4～10),which is a modification ofγ'-FexC(I).These two phases have close structural relations and coexist in aged marten-site.The crystal structures determined by this study can explain all experimental diffractiondata.

关 键 词：铁碳马氏体 有序化 时效 

分 类 号：TG151.2[金属学及工艺—热处理]