| 多晶 CuZnAl 合金马氏体变体群结构及其生长过程研究 |
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| 引用本文： | 徐根应,汪明朴.多晶 CuZnAl 合金马氏体变体群结构及其生长过程研究[J].合肥工业大学学报(自然科学版),1997(4). |
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| 作者姓名： | 徐根应 汪明朴 |
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| 作者单位： | 合肥工业大学(徐根应)，中南工业大学(汪明朴) |
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| 基金项目： | 国家自然科学基金,安徽省“九五”攻关项目 |
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| 摘 要： | 利用金相动态观察及Ｘ－射线衍射研究了多晶Ｃｕ－１８．５２Ｚｎ－６．３７Ａｌ合金Ｍ１８Ｒ马氏体变体群组态及其生长过程。多晶Ｃｕ－Ｚｎ－Ａｌ合金一个晶粒内多以一个变体群为主。每群由Ａ、Ｂ、Ｃ、Ｄ四个变体组成，形成ＡＣ型矛头状、ＡＢ平行及ＡＤ分叉型三种组态。变体群形成过程中，马氏体变体的消长及变体内小孪晶结构的形成等动力学特征反映了马氏体的热弹性及相变应力、应变自调节。在相变热循环中，变体群内形成大量非常稳定的残留马氏体。
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| 关 键 词： | 马氏体 Cu－Zn－Al合金 变体群 形状记忆合金 |
THE STUDIES OF THE CONFIGURATION OF MARTENSITE VARIANT GROUP AND ITS FORMATION IN A POLYCRYSTALLINE CuZnAl ALLOY |
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| Xu Genying,Wang Mingpu.THE STUDIES OF THE CONFIGURATION OF MARTENSITE VARIANT GROUP AND ITS FORMATION IN A POLYCRYSTALLINE CuZnAl ALLOY[J].Journal of Hefei University of Technology(Natural Science),1997(4). |
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| Authors: | Xu Genying Wang Mingpu |
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| Institution: | Xu Genying Wang Mingpu (Hefei University of Technology) (Central South University of Technology) |
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| Abstract: | The configuration of the M18R martensite variant group and its formation in the polycrystalline Cu 18.52Zn 6.37Al alloy is studied by means of optical microscope observations and X ray difraction Mainaly,one grain contains one variant group.Each variant group comprises four variants, designated A,B,C and D. Three varant combinations can be identified in a given group,called as the AC,AB and CD types which have spear, paralled and fork morphologies respectively.The growth and decline of variants and the twins formation in the variants in the process of group formation reflects the characteristics of thermoelasticity of martensitic transformation and that of the self accomation of the transformation stress and strain. A large amount of remain martensites which are very stable can be caused in the group by transformation cycling. |
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| Keywords: | martensite Cu Zn AL alloy variant group hape memory alloy |
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