Microstructure of the weld joints in a tungsten-insert gas(TIG) welded Fe-Mn-Si-Cr-Ni shape memory alloy was investigated by using scanning electron microscope and X-ray diffraction,and shape memory effect of the weld joints was examined by bending tests.

The wearing resistance of one kind of Fe-Mn-Si based shape memory alloy is studied by sliding friction test and electron scanning microscope (SEM), X-ray diffraction (XRD) etc according to which the phase-transformations and their micromechanisms of the tested alloy can be observed.

Mechanical Properties Analysis of Fe-Mn-Si Shape Memory Alloy;

Fe-Mn-Si shape memory alloy (Fe-Mn-Si SMA) occurs martensitic transformation and transformation distortion in order to adapt change of macroscopical force in the condition of exerting outside mechanical stress.

This paper discussed the effect of pre-deformation and mechanical training on the restoring ratio of Fe-Mn-Si-C shape memory alloy(SMA) which was produced in normal atmosphere by virtue of salvaged steel and pig iron with special protectant, of which the memory effect is achieved by stress-induced martensitic phase transformation.

The influence of the pulse electric field and aging on the microstructure as well as the shape memory effect on the Fe-Mn-Si-Cr-Ni alloy was researched.