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Yousef Payandeh

Yousef Payandeh

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0001-5482-3991
Education: PhD.
ScopusId: 15731780700
Faculty: Engineering
Address: Arak University
Phone: 00988632625820

Research

Title
The effect of cooling temperature on the mechanical behaviour of the NiTi shape memory alloy
Type
Presentation
Keywords
cooling temperature, mechanical behaviour, NiTi shape memory alloy
Year
2015
Researchers Yousef Payandeh ، Bahman Mirzakhani

Abstract

Shape memory alloys (SMAs) are metallic alloys that can undergo martensitic phase transformations as a result of applied thermomechanical loads and are capable of recovering permanent strains when heated above a certain temperature. The key characteristic of all SMAs is the occurrence of a martensitic phase transformation between the austenitic phase and the different variants of the lowtemperature, lowsymmetry martensitic phase [1].In near equiatomic Ti–Ni alloys, the shape memory effect and superelasticity occur in association with the thermoelastic martensitic transformation from the parent phase (β) with a B2 structure to the phase with a monoclinic B19’ structure, or more often in association with the two-step transformation from β to a trigonal phase (so called R-phase) and then to the B19’ phase [2]. In this work, the effect of cooling temperature on the mechanical behaviour of the NiTi shape memory alloy has been studied.