Improvement of mechanical properties of powder metallurgical NiTi shape memory alloys

被引：59

作者：

Mentz, Juliane ^{[1
]}

Bram, Martin ^{[1
]}

Buchkremer, Hans Peter ^{[1
]}

Stoever, Detlev ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Mat & Proc Energy Syst, D-52425 Julich, Germany

来源：

ADVANCED ENGINEERING MATERIALS | 2006年 / 8卷 / 04期

关键词：

D O I：

10.1002/adem.200500258

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An increase of plastic deformation for hot isostatic pressing (HIP) and metal injection molding (MIM) samples by reducing the impurity contents in the starting powder and the increase in the strain usable for the shape memory effect was investigated. The correlation between the impurity contents of oxygen and carbon, the formation of Ti-rich precipitations and their influence on the mechanical properties was also analyzed. No significant increase of the oxygen or carbon content was found for HIP material in comparison with the powder. The results shows that the pressure-enhanced sintering in the HIP process produced nearly dense materials while pressureless sintering of the MIM material resulted in a certain amount of residual pores.

引用

页码：247 / 252

页数：6

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