Effect of Prior Austenite Grain Size on the Morphology and Mechanical Properties of Martensite in Medium Carbon Steel

作     者：Y.Prawoto N.Jasmawati K.Sumeru 

作者机构：Faculty of Mechanical EngineeringUniversiti Teknologi Malaysia81310 UTMSkudaiJohor 81310Malaysia Dept.of Refrigeration and Air Conditioning EngineeringPoliteknik Negeri BandungIndonesia 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2012年第28卷第5期

页      面：461-466页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Heat treating Mechanical testing Carbon/alloy steels 

摘      要：In industrial application,unintentional manufacturing line troubles often consequence in heating raw materials excessively,in terms of either time or *** of the effects of such occurrence is a product with a variation of prior austenite grain size,even if after the heat treatment the end result is the same,*** variation of the prior austenite grain size is believed to vary the end results of the *** undesirable variation includes the variation of fatigue resistance,impact strength,yield strength,hardness,*** research studies the effect of the prior austenite grain size on the morphology of the martensite *** results show that within the typical industrial application of temperature and holding time set up,as holding time or the temperature increases,the prior austenite average diameter *** block and packet sizes in the martensite also *** variation of mechanical property dependence on the grain size is indeed due to the different characteristics reflected in the martensite *** respect to the same area,smaller grain has more blocks and packets,which agrees with higher dislocation density verified with transmission electron microscopic evaluation.