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Antiferromagnetic Transition and Martensite Transformation in γ-Mn-Fe Alloys

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Abstract:

The detailed investigation of internal friction and relative dynamic modulus has been carried out for the γ-MnFe alloys with 61.4at%~86.4at%Mn in the temperature range from -50 to 250 using LMR by means of force vibration method. The internal friction was found to exhibit in turn three peaks from higher temperature to the lower temperature on the internal friction-temperature curves. They are PA,PM and PT progressively. It can be concluded that PA may be connected with the stress-induced motion of magnetic domain. The PM was suggested to be originated from the stress-induced movement of interfaces between the fcc and fct phases. The PT is due to a relaxation process associated with the movement of the {101}-twin boundaries in the fct phase or fcc antiferromagnetic phase.

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Periodical:

Advanced Materials Research (Volumes 146-147)

Pages:

916-919

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.146-147.916

Citation:

Cite this paper

Online since:

October 2010

Authors:

Su Yi Gu, Ji Hua Zhang

Keywords:

Internal Friction, Relative Dynamic, γ-Mn-Fe Alloy

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