Internal Defects of B19' Martensite via R-Phase in Ti-Ni-Fe and Thermally Cycled Ti-Ni Alloys

被引：7

作者：

Nishiura, Tomohiro ^{[1
]}

Nishida, Minoru ^{[2
]}

机构：

[1] Kyushu Univ, Grad Sch Sci & Engn, Kasuga, Fukuoka 8168580, Japan

[2] Kyushu Univ, Dept Appl Sci Elect & Mat, Kasuga, Fukuoka 8168580, Japan

来源：

MATERIALS TRANSACTIONS | 2009年 / 50卷 / 05期

关键词：

titanium-nickel based alloy; lattice invariant shear; R-phase; twinning mode; thermal cycle; SHAPE-MEMORY ALLOYS; ELECTRON-MICROSCOPY; TRANSFORMATION BEHAVIOR; SINGLE-CRYSTALS; TI50NI47FE3;

D O I：

10.2320/matertrans.MER2008430

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystallography and morphology of B19' martensite via R phase transformation in Ti-Ni-Fe alloy have been investigated by X-ray diffraction and transmission electron microscopy. The microstructure aspects of the B19' martensite in the solution treated Ti-Ni-Fe alloy was the same as those in the solution treated binary Ti-Ni alloy. In the thermal cycled Ti-Ni-Fe alloy, the (001)(B19') compound twins frequently observed were the same as those in the thermal cycled binary Ti-Ni alloy. It is considered that the (001)(B19') compound twin was a kind of deformation twin to reduce the internal stress due to dislocations introduced during the thermal cycle, rather than a lattice invariant shear of the R to B19' transformation. [doi:10.2320/matertrans.MER2008430]

引用

页码：1219 / 1224

页数：6

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