| γ（fcc）→ε（hcp）马氏体相变切变角的原子力显微镜测定方法 |
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| 引用本文： | 石玮,郭正洪,戎咏华,陈世朴,徐祖耀.γ（fcc）→ε（hcp）马氏体相变切变角的原子力显微镜测定方法[J].上海交通大学学报,2001,35(3):335-338. |
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| 作者姓名： | 石玮 郭正洪 戎咏华 陈世朴 徐祖耀 |
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| 作者单位： | 上海交通大学国家教育部 |
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| 基金项目： | 高等学校博士点专项科研基金资助(No.97024835)；上海市新材料研究中心基金资助(合同号99JC14019) |
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| 摘 要： | 建立了一种测量γ(fcc)→ε(hcp)马氏体相变切变角的方法.运用Thompson四面体和几何模型推导出马氏体变体的迹线方向，通过计算求得相变浮凸角与真实切变角的对应关系.应用原子力显微镜(AFM)测量了Fe-30％Mn-6％Si合金应力诱发马氏体相变的浮凸角.文中两个实例计算结果分别为17.85°和21.10°，与理论值19.47°相比误差小于2°，表明该方法具有精度较高、操作简单的特点.
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| 关 键 词： | 马氏体相变 切变角 表面浮凸 原子力显微镜 浮凸角 形状记忆合金 测定 |
| 文章编号： | 1006-2467(2001)03-0335-04 |
| 修稿时间： | 2000年3月3日 |
Method of |
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| SHI Wei,GUO zheng-hong,RONG Yong-hua,CHEN Shi-pu,XU Zu-yao.Method of[J].Journal of Shanghai Jiaotong University,2001,35(3):335-338. |
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| Authors: | SHI Wei GUO zheng-hong RONG Yong-hua CHEN Shi-pu XU Zu-yao |
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| Abstract: | A modified method for the determination of γ(fcc)→ε(hcp) martensitic transformation shear angle was established. Thompson tetrahedron and geometry analysis were used to calculate the directions of variant traces on specimen surface, then the relationship between the transformation shear angle and surface relief angle was deduced. The surface relief angles caused by stress-induced γ(fcc)→e(hcp) transformation for two surface regions in an Fe-30％Mn-6％Si alloy were measured by AFM (Atomic Force Microscope) and the corresponding shear angles were calculated to be 17.85° and 21.10° respectively. The deviation compared to the theoretical value (19.47°) is reasonably small, suggesting that the method is reliable and quite simple. |
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| Keywords: | martensitic transformation shear angle surface relief atomic force microscope (AFM) |
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