Abstract In the current work, a real-space phase field model based on the Landau theory is established to study tetragonal to monoclinic phase transformation in nanocomposite zirconia. The model successfully captures the superelasticity behavior of nanocomposite zirconia above the equilibrium temperature, and obtains the main characteristics of martensitic transformation with different mismatch strains of the second phase. The simulation results show that mismatch strains can decrease the critical transformation stress, whereas orientations of the second phase exert a limited effect on the martensitic transformation behavior.

中文翻译：

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了解纳米级第二相的错配应变和取向对氧化锆超弹性的影响

摘要 在目前的工作中，基于Landau理论建立了实空间相场模型来研究纳米复合氧化锆的四方相到单斜相转变。该模型成功捕捉到纳米复合氧化锆在平衡温度以上的超弹性行为，获得了第二相不同错配应变下马氏体相变的主要特征。模拟结果表明，失配应变可以降低临界相变应力，而第二相的取向对马氏体相变行为的影响有限。