C11b type precipitates in B2 parent and B19 martensitic matrices in Ti-Pd alloy

被引：0
|
作者：
Nishida, Minoru [1 ]
Matsuda, Mitsuhiro [1 ]
Hashimoto, Daisuke [1 ]
机构：
[1] Kumamoto Univ, Dept Mat Sci & Engn, Kumamoto 8608555, Japan
来源：
Solid-Solid Phase Transformations in Inorganic Material 2005, Vol 2 | 2005年
关键词：
shape memory alloy; orientation relationship; coherent strain;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The morphology and crystallography of the Ti2Pd phase with C11(b) Structure precipitated in B2 parent and B19 martensitic matrices in a Ti-rich Ti-Pd shape memory alloy have been investigated by transmission electron microscopy. Three Ti2Pd variants are recognized in the specimen aged above the A(f) temperature, i.e., in the B2 matrix. On the other hand, four Ti2Pd variants are confirmed in the specimen aged below the A, temperature, i.e., in the 1319 matrix. The orientation relationship between the Ti2Pd precipitate and each matrix is consistent with the number of Ti2Pd variants. The Ti2Pd precipitates in the B2 and the B19 matrices have disk and polygonal plate shapes, respectively. The c-axis of Ti2Pd precipitate in the B2 matrix is perpendicular to the disk surface. On the other hand, that in the B19 matrix is parallel to the plate surface. These differences are well explained by the magnitude of the coherent strain.
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页码：81 / 86
页数：6
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