Gradient porosity and large pore size NiTi shape memory alloys

被引：93

作者：

Zhang, Y. P. ^{[1
]}

Li, D. S. ^{[1
]}

Zhang, X. P. ^{[1
]}

机构：

[1] S China Univ Technol, Sch Mech Engn, Guangzhou 510641, Peoples R China

来源：

SCRIPTA MATERIALIA | 2007年 / 57卷 / 11期

基金：

中国国家自然科学基金;

关键词：

NiTi shape memory alloy; gradient porosity; temporary space-holder; phase transformation; superelasticity;

D O I：

10.1016/j.scriptamat.2007.07.043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous NiTi alloys with gradient porosity and large pore size were successfully fabricated by using a temporary space-holder (NH4HCO3) and a conventional sintering method. The pore characteristics of the porous alloys can be tailored effectively by changing the amount of NH4HCO3 added, and the use of NH4HCO3 has no influence on the microstructure and phase transformation behavior of the porous alloys. The fabricated samples with radial gradient porosity exhibit excellent superelasticity (higher than 4%). (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1020 / 1023

页数：4

共 14 条

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