The Effect of Stoichiometry and Degree of Order on Mechanical Properties of Ni₃Fe Intermetallics

Abstract:

The effects of Fe stoichiometry and degree of order on mechanical properties of intermetallics Ni₃Fe were investigated. The experimental results showed that the phase composition and the grain size of Ni₃Fe alloy was independent on Fe stoichiometry. The Ni₃Fe alloy with the normal stoichiometry had the lowest elongation in the ordered and disordered alloys. The tensile strength of Ni₃Fe alloy depended on Fe stoichiometry of alloy. The effect of Fe stoichiometry on the mechanical properties of the ordered alloy was larger than that of disordered alloy. There were more point defects in lattice when the alloy stoichiometry deviating from the normal stoichiometry in the Ni₃Fe alloy. The changes of the concentration of the point defects and degree of order altered the deformation behavior of the Ni₃Fe alloy.

• Periodical: Materials Science Forum (Volumes 747-748)
• Pages: 19-24
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.747-748.19
• Online since: February 2013
• Authors: Ye Xin Chen, Hai Yan Qian, Tao Chen
• Keywords: Degree of Order, Intermetallic Ni₃Fe, Mechanical Property, Stoichiometry

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