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Sensitivity of the final properties of tailored hot stamping components to the process and material parameters
Abdollahpoor, Amir; Chen, Xiangjun; Pereira, Michael P.; Xiao, Namin; Rolfe, Bernard F.; aabdolla@deakin.edu.au
2016
发表期刊JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN0924-0136
卷号228页码:125-136
摘要The final mechanical properties of hot stamped components are affected by many process and material parameters due to the multidisciplinary nature of this thermal-mechanical-metallurgical process. The phase transformation, which depends on the temperature field and history, determines the final microstructure and consequently the final mechanical properties. Tailored hot stamping parts - where the cooling rates are locally chosen to achieve structures with graded properties - has been increasingly adopted in the automotive industry. In this case, the robustness of final part properties is more critical than in the conventional hot stamping parts, where the part is fully quenched. In this study, a wide range of input parameters in a generalized hot stamping model have been investigated, examining the effect on the temperature history and resulting final material-properties. A generic thermo-mechanical finite element model of hot stamping was created and a modified phase transformation model, based on Scheil's additive principle, has been applied. The comparison between modeling and experiments shows that the modified phase transformation model coupled with the incubation time provides higher accuracy on the simulation of transformation kinetics history. The robustness of four conditions relevant to tailored hot stamping was investigated: heated tooling (with low and high tool conductance), air cooling, and conventional hot stamping. The results show the high robustness of the conventional hot stamping compared to tailored hot stamping, with respect to the stamped component's final material properties (i.e. phase fraction and hardness). Furthermore, tailored hot stamping showed higher robustness when low conductivity tools are used relative to high conductivity tools. (C) 2014 Elsevier B.V. All rights reserved.
部门归属[abdollahpoor, amir ; pereira, michael p. ; rolfe, bernard f.] deakin univ, sch engn, geelong, vic 3220, australia ; [chen, xiangjun ; xiao, namin] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [chen, xiangjun] hunan univ, state key lab adv design & mfg vehicle body, changsha 410082, hunan, peoples r china
关键词Hot Stamping Tailoring Numerical Modeling Phase Transformation
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75111
专题中国科学院金属研究所
通讯作者aabdolla@deakin.edu.au
推荐引用方式
GB/T 7714
Abdollahpoor, Amir,Chen, Xiangjun,Pereira, Michael P.,et al. Sensitivity of the final properties of tailored hot stamping components to the process and material parameters[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2016,228:125-136.
APA Abdollahpoor, Amir,Chen, Xiangjun,Pereira, Michael P.,Xiao, Namin,Rolfe, Bernard F.,&aabdolla@deakin.edu.au.(2016).Sensitivity of the final properties of tailored hot stamping components to the process and material parameters.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,228,125-136.
MLA Abdollahpoor, Amir,et al."Sensitivity of the final properties of tailored hot stamping components to the process and material parameters".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 228(2016):125-136.
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