Effects of Welding Parameters on the Mechanical Performance of Laser Welded Nitinol

被引：43
作者：
Khan, M. I. [1 ]
Panda, S. K. [1 ]
Zhou, Y. [1 ]
机构：
[1] Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada
来源：
MATERIALS TRANSACTIONS | 2008年 / 49卷 / 11期
基金：
加拿大自然科学与工程研究理事会;
关键词：
laser micro-welding (LMW); nitinol; mechanical properties; pseudoelasticity; cyclic loading; fracture surfaces;
D O I：
10.2320/matertrans.MRA2008243
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The excellent pseudoelasticity, shape memory and biocompatibility of Nitinol has made it a leading candidate for various applications, including aerospace, micro-electronics and medical devices. Challenges associated with the welding Nitinol need to be resolved before its full potential in practical applications can be attained. The current study details the effects of process parameters on the mechanical and pseudoelastic properties of Ni-rich pulsed Nd:YAG laser welded Nitinol. The weld strength, pseudoelastic and cyclic loading properties for varying welding parameters are compared to those of the base metal. Furthermore, fracture surfaces have been analysed and detailed. Results show that process parameters greatly influence the mechanical performance and fracture mode of weldments. [doi: 10.2320/matertrans.MRA2008243]
引用
收藏
页码：2702 / 2708
页数：7
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