Preparation of Porous NiTi Alloy and Its Microstructure and Shape Memory Properties

被引：0

作者：

Liao Zheng ^{[1
]}

Lin Jianguo ^{[1
]}

Ma Mo ^{[1
]}

机构：

[1] Xiangtan Univ, Fac Mat & Photoelect Phys, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2010年 / 39卷 / 04期

关键词：

porous NiTi shape memory alloy; powder metallurgy; pore structure; shape-memory behavior; TRANSFORMATION BEHAVIOR; SUPERELASTIC PROPERTIES; MECHANISM; POROSITY; FOAMS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Porous Ti-50.8 at%Ni shape memory alloys (SMA) with high porosity were prepared by the powder metallurgical technique, and the microstructure and shape memory behavior of the porous alloys were investigated. The results indicate that the porous alloys prepared by this method exhibit a homogenous pore-space structure with a high open-cell ratio, and the average pore size is about 200 mu m. The microstructure is mainly composed of Austenitic NiTi phase (B2) and monoclinic Martensite NiTi (B19'). The cyclic load-unload recovery curves reveal that the porous alloy can exhibit certain shape-memory effect, which decreases with the increase of the porosity.

引用

页码：642 / 646

页数：5

共 15 条

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