State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
Dilatometric Analysis of Irreversible Volume Change during Phase Transformation in Pure Iron
State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
ժҪ 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 measurements. The 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.
Abstract��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 measurements. The 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.
��������:the State Natural Science Fund Projects of China;the Key Projects in the National Science & Technology Pillar Program
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E-mail: fujianxuntw@gmail.com
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Ren-jie ZHAO,Jian-xun FU,Yu-yuan ZHU,Ye-jin YANG,Yan-xin WU. Dilatometric Analysis of Irreversible Volume Change during Phase Transformation in Pure Iron[J]. �й������ڿ���, 2016, 23(8): 828-833.
Ren-jie ZHAO,Jian-xun FU,Yu-yuan ZHU,Ye-jin YANG,Yan-xin WU. Dilatometric Analysis of Irreversible Volume Change during Phase Transformation in Pure Iron. Chinese Journal of Iron and Steel, 2016, 23(8): 828-833.
2016, Vol. 23 
