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| 不同应力场中马氏体形核的择优取向 | |
| 引用本文： | 胡深洋,折晓黎,李玉兰. 不同应力场中马氏体形核的择优取向[J]. 物理学报, 1996, 45(2): 339-344 |
| 作者姓名： | 胡深洋 折晓黎 李玉兰 |
| 作者单位： | (1)兰州大学材料系,兰州730000; (2)兰州大学力学系,兰州730000 |
| 摘 要： | 系统地模拟计算了不同方位四方相ZrO2(T)椭球片分别在拉、压、剪应力诱导下发生ZrO2(T)→ZrO2(M)马氏体相变时系统应变能的变化.并用能量极小准则确定了有利的形核方位.结果表明相变中伴随较大的剪切变形将使马氏体形核呈现明显的择优取向;不同应力场诱导相变的临界应力相差很大.关键词： |
| 关 键 词： | 二氧化锆 马氏体形核 应力场 形核方位 陶瓷材料 |
| 收稿时间： | 1993-08-01 |
THE OPTIMAL ORIENTATION OF MARTENSITIC NUCLEATION UNDER DIFFERENT STRESSES |
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| HU SHEN-YANG,ZHE XIAO-LI and LI YU-LAN. THE OPTIMAL ORIENTATION OF MARTENSITIC NUCLEATION UNDER DIFFERENT STRESSES[J]. Acta Physica Sinica, 1996, 45(2): 339-344 | |
| Authors: | HU SHEN-YANG ZHE XIAO-LI LI YU-LAN |
| Abstract: | The total-energy change is systematically evaluated in this paper when the thin ZrO2(T) ellipsoidal plate at different orientation transforms into ZrO2(M) under extension, compression and shear stresses. The optimal orientation of Martensitic uncleation is determined by using the oriterion of minimum energy. The numerical results show that the shear strains resulting from the transformation affect obviously the orientation of Martensitic nucleation and the critical stresses inducing transformation are very different. |
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