Fracture of Ni60Ti40 shape memory alloy notched plates under cooling

Abstract eng:
As shape memory alloys become more commonly used for structural applications, there is a need to better understand the failure behaviour of these materials. Notched plates of NisoTi4o were subjected to tensile loads until fracture while in pure austenite, pure martensite, and during phase transformation from austenite to martensite. Through experimental observations, it was determined that this material exhibits a high-speed, brittle fracture and that the ultimate tensile stress of the material while undergoing phase transformation is lower thanthe pure phase.

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