Precipitation of Ni4Ti3-variants in a polycrystalline Ni-rich NiTi shape memory alloy

被引：48
作者：
Bojda, O
Eggeler, G
Dlouhy, A
机构：
[1] Acad Sci Czech Republic, Inst Phys Mat, Dept Mech Properties, Brno 61662, Czech Republic
[2] Brno Univ Technol, Fac Chem, Brno 61200, Czech Republic
[3] Ruhr Univ Bochum, Inst Werkstoffe, D-44801 Bochum, Germany
来源：
SCRIPTA MATERIALIA | 2005年 / 53卷 / 01期
关键词：
Ni-rich NiTi shape memory alloys; Ni4Ti3-precipitates; transmission electron microscopy; image analysis; microstructural heterogeneity;
D O I：
10.1016/j.scriptamat.2005.03.006
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present work we provide a fully quantitative TEM analysis, which shows that different Ni4Ti3 precipitate variants form close to and far from grain boundaries during stress-assisted aging. We discuss how this type of heterogeneity can give rise to multiple step martensitic transformations. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：99 / 104
页数：6
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