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Microstructure and Mechanical Properties of Fe-Ni-Mn-Al Alloys

  • M. W. Wittmann (a1), I. Baker (a1) and J. A. Hanna (a1)
Abstract

In an attempt to produce a two-phase alloy consisting of a L21–structured (Fe, Ni)2MnAl-based phase in either a B2 or b.c.c. matrix, seven Fe-Ni-Mn-Al alloys were cast. Transmission electron microscopy (TEM) of the as-cast alloys revealed a range of microstructures including single phase L21, a f.c.c./B2 eutectic, and alternating, coherent 10–60 nm wide ordered and disordered b.c.c. rods aligned along <100>. A description of the phases, including chemical compositions and hardnesses is presented.

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  • EISSN: 1946-4274
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