Dilatometric Analysis of Irreversible Volume Change during Phase Transformation in Pure Iron

作     者：Ren-jie ZHAO Jian-xun FU Yu-yuan ZHU Ye-jin YANG Yan-xin WU 无

作者机构：State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory Advanced Ferrometallurgy &School of Materials Science and EngineeringShanghai University 

出 版 物：《Journal of Iron and Steel Research International》 (钢铁研究学报(英文版))

年 卷 期：2016年第23卷第8期

页      面：828-833页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Item Sponsored by Key Projects in National Science and Technology Pillar Program of China(2013BAE07B00) National Natural Science Foundation of China(51474142) Program for Professors of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning of China(2012) 

主　　题：irreversible Transformation micrometer interpretation specimen lever length creep ferrite shrinkage 

摘      要：One assumption underlying the conventional dilatometric analysis based on the lever rule is that the volume of the specimen changes isotropically during phase transformation,which conflicts with the irreversible length change shown in actual *** contribution of this irreversible effect to the dilation data of pure iron upon heating and cooling was respectively quantified via conversion equations based on lattice parameters.A model considering the elastic strain and creep deformation was established for both the interpretation of the irreversible volume change and the discrepancy between the results measured by a dilatometer and a micrometer.