文献类型： 外文期刊

作者： Cui, Junjia ¹ ; Lei, Chengxi ² ; Xing, Zhongwen ² ; Li, Chunfeng ¹ ; Ma, Shumei ³ ;

作者机构： 1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang Pr, Peoples R China

2.Harbin Inst Technol, Sch Mech Engn, Harbin 150001, Heilongjiang Pr, Peoples R China

3.Heilongjiang Acad Agr Sci, Harbin 150001, Peoples R China

关键词： High strength steel;Hot stamping;Phase transformation simulation;Quenching

期刊名称：JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE （ 2015影响因子：1.666； 五年影响因子：1.109 ）

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收录情况： SCI

摘要： In order to simulate multi-field coupling, a method that adding phase transformation model of heat treatment into thermo-mechanical model was used by finite element software Deform 3d. The distribution of phase and the effects of parameters on phase transformation were simulated under different processing parameters. The hot stamping experiments with the mold that had cooling system were carried out under different technological parameters. It was shown that 97.7% austenite transformed to martensite after 8 s pressure holding time; the average temperature of the sheet dropped 10 °C when the convection coefficient was raised from 0 W/m ~2 K to 11000 W/m ~2 K; the tensile strength of side wall was lower than flange and end region; the temperature error between the test and simulation was less than 15%. Simulation and experiment were in good agreement with accuracy enough for engineering applications.