Aging-induced complex transformation behavior of martensite in Ni57.5Mn17.5Ga25 shape memory alloy
V.V. Khovailo, R. Kainuma, T. Abe, K. Oikawa, and T. Takagi
TL;DR
This paper investigates how aging affects the complex transformation behavior of martensite in Ni57.5Mn17.5Ga25 shape memory alloy, revealing unique features similar to Ni-Ti alloys.
Contribution
It uncovers the aging-induced complex transformation behaviors of martensite in Ni-Mn-Ga alloy, highlighting phenomena previously observed only in Ni-Ti alloys.
Findings
Aging in austenitic state decreases transformation temperature.
Aging in martensitic state induces unusual transformation features.
Complex transformation behaviors are linked to aging conditions.
Abstract
Ni57.5Mn17.5Ga25 shape memory alloy exhibits a complex transformation behavior, appearing after aging. Aging in the austenitic state resulted in an ordinary decrease of the martensitic transformation temperature. Contrary to this, aging in the martensitic state brought about unusual features of the martensitic transformation observed so far only in Ni-Ti alloys.
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Taxonomy
TopicsShape Memory Alloy Transformations