Article ID Journal Published Year Pages File Type
1621523 Journal of Alloys and Compounds 2009 4 Pages PDF
Abstract

The martensitic transformation behavior and mechanical properties were investigated in a Ti-doped Ni53Mn23.5Ga18.5Ti5 alloy aged at 873 K for different durations. It is shown that the volume fraction of the Ni3Ti phase increases and the Ni content in the matrix reduces with increasing aging time, resulting in the decrease of the martensitic transformation temperatures. The precipitation of Ni3Ti particles strengthens the matrix, resulting in the increasing in the fracture toughness. Fracture morphology observation shows the fracture type changing from intergranular brittleness fracture to a mixture of intergranular and transgranular ductile failure is responsible for the improved mechanical properties.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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