Experimental Investigations of the High-Temperature Phase Relationship and Ordering Transition in Ni-Mn-Ga Ternary System

Abstract:

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The phase equilibria at 900 °C and B2/L21 order-disorder transition in the Ni-Mn-Ga ternary system were investigated by analyzing the equilibrated alloys and diffusion couples using a combination of techniques. It was confirmed that a bcc single phase region exists in a wide composition range at 900 °C, and the critical temperatures of B2/L21 order-disorder transition were determined in Ni-50 at.% section, which exhibits a maximal ordering transition temperature of 796 at Mn content of 25 at.%. The obtained results will be helpful for the preparation and annealing of Ni-Mn-Ga alloys in the specific temperature.

Info:

Periodical:

Advanced Materials Research (Volumes 148-149)

Edited by:

Xianghua Liu, Zhengyi Jiang and Jingtao Han

Pages:

1695-1700

DOI:

10.4028/www.scientific.net/AMR.148-149.1695

Citation:

Y. Q. Ma et al., "Experimental Investigations of the High-Temperature Phase Relationship and Ordering Transition in Ni-Mn-Ga Ternary System", Advanced Materials Research, Vols. 148-149, pp. 1695-1700, 2011

Online since:

October 2010

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$35.00

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