Abstract: It is generally recognized that accurate acquisition of the microscopic representation of the martensite transformation process is crucial for obtaining the best performance of the material and exceedingly significant in the field of material design. There are multiple parameters that exert influence on the transformation process of martensite. Accordingly, the key to precisely grasp the transformation mechanism of martensite lies in the quantitative analysis of the sensitivity of each parameter to the influence of martensite transformation. In this work, we employed phase field method to deduce the phase field equation of martensite transformation from metastable to steady state. Then, the solutions of the equation were figured out by finite element method, and the solution results were visualized as well. The variation curve of order parameter at various positions during martensite nucleation and growth were obtained, which revealed the nucleation growth law and dynamic variation characteristics of martensite transformation. On this basis, we designed an orthogonal test and quantitatively evaluated the impact and sensitivity degree of diverse parameters on martensitic transformation by response surface method. This study effectively expounded and determined the martensite transformation law and realized the quantitative evaluation of the martensite transformation process. It also provides a valuable approach to determine the law of martensite transformation and acquire the optimal process parameters, paving the way for improving the mechanical properties of materials.
李昌, 高敬翔, 张大成, 于志斌, 韩兴. 基于PFM-FEM的多变体马氏体转变过程模拟及模型参数灵敏度分析[J]. 材料导报, 2019, 33(20): 3477-3488.
LI Chang, GAO Jingxiang, ZHANG Dacheng, YU Zhibin, HAN Xing. PFM-FEM Based Simulation of Multi-Variant Martensitic Transformation Process and Sensitivity Analysis of Model Parameters. Materials Reports, 2019, 33(20): 3477-3488.
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2019, Vol. 33 
