Mssbauer and electron microscopy study of martensitic transformations in an Fe-Mn-Mo alloy  

作　　者：T.Kirindi U.Sari M.Kurt 

机构地区：[1]Department of Computer Education and Instructional Technology Kirkkale University,Kirkkale 71450,Turkey [2]Institute of Sciences Kirkkale University,Yahsihan Campus,Kirkkale 71450,Turkey

出　　处：《International Journal of Minerals,Metallurgy and Materials》2010年第4期448-452,共5页矿物冶金与材料学报（英文版）

基　　金：supported by the Kirikkale University Scientific Research Fund(Nos.2008/34 and 2008/35)

摘　　要：The kinetic,morphological,crystallographic,and magnetic characteristics of thermally induced martensites in Fe-13.4wt% Mn-5.2wt%Mo alloy were investigated by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,and M（o｜¨）ssbauer spectroscopy.The experimental results reveal that two types of thermal-induced martensites,e（hcp） andα＇（bcc） martensites,are formed in the as-quenched condition,and these transformations have athermal characters.Mo addition to the Fe-Mn alloy does not change the coexistence ofεandα＇ martensites with the Mn content between 10wt%and 15wt%.Besides,M（o｜¨）ssbauer spectra reveal a paramagnetic character with a singlet for theγ（fcc） austenite andεmartensite phases and a ferromagnetic character with a broad sextet for theα＇ martensite phase. The volume fraction ofα＇ martensite forming in the quenched alloy is much more than that of theεmartensite.The kinetic,morphological,crystallographic,and magnetic characteristics of thermally induced martensites in Fe-13.4wt% Mn-5.2wt%Mo alloy were investigated by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,and M（o｜¨）ssbauer spectroscopy.The experimental results reveal that two types of thermal-induced martensites,e（hcp） andα＇（bcc） martensites,are formed in the as-quenched condition,and these transformations have athermal characters.Mo addition to the Fe-Mn alloy does not change the coexistence ofεandα＇ martensites with the Mn content between 10wt%and 15wt%.Besides,M（o｜¨）ssbauer spectra reveal a paramagnetic character with a singlet for theγ（fcc） austenite andεmartensite phases and a ferromagnetic character with a broad sextet for theα＇ martensite phase. The volume fraction ofα＇ martensite forming in the quenched alloy is much more than that of theεmartensite.

关 键 词：Fe-Mn alloy MOLYBDENUM martensitic transformation scanning electron microscopy（SEM） transmission electron microscopy（TEM） Mossbauer spectroscopy 

分 类 号：TG142.1[一般工业技术—材料科学与工程]