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《Journal of Materials Engineering》 2008-04
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Research on Thermal Deformation Behavior and Model of Flow Stress of GCr15 Steel

LIAO Shu-lun1,ZHANG Li-wen1,YUE Chong-xiang1,GUO Shu-qi2,ZHEN Yu2(1 State Key Laboratory for Materials Modification,Dalian University of Technology,Dalian 116023,Liaoning,China;2 Dongbei Special Steel Group,Dalian 116031,Liaoning,China)  
The behavior of thermal deformation of GCr15 steel had been investigated by single-stage compression tests on Gleeble-3800 thermal-mechanical simulator.The deformation temperature ranged from 950℃ to 1150℃,and the strain rate ranged from 1s-1 to 10s-1.A hyperbolic sine equation was employed to describe the relationship between the peak stress and Zener-Hollomon parameter,in which the activation energy of deformation and other constants were obtained using regression analysis.Meanwhile,the equation for peak strain and the model of flow stress were also obtained.It is shown that the predicted results of the flow stress equation are good agreement with the experimental data.
【Fund】: 大连市优秀青年科技人才基金(2001-122)
【CateGory Index】: TG115.5
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