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Aging behavior of Fe-30 Ni alloys containing niobium

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Abstract

A study has been made of the precipitation reactions in Fe-30 wt pct alloys containing up to 5 wt pct Nb. The as-quenched structures of these alloys consist, of austenite, martensite in twinned as well as in massive form, and Ni3Nb and Fe2Nb precipitates. On aging at 700° and 800°C the main precipitation reaction results in the formation of hexagonal Laves phase Fe2Nb, but Ni3Nb in both bct and orthorhombic structures also precipitates. The precipitation of Fe2Nb is a heterogeneous process and results in a considerable increase in the hardness of the alloy.

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Authors and Affiliations

  1. Metallurgical Sciences Laboratory, University of Manitoba, Winnepeg, Canada

    K. Leitch (Graduate Student) & M. Chaturvedi (Associate Professor of Metallurgy)

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  1. K. Leitch
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  2. M. Chaturvedi
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Leitch, K., Chaturvedi, M. Aging behavior of Fe-30 Ni alloys containing niobium. Metall Trans 2, 1407–1413 (1971). https://doi.org/10.1007/BF02913368

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  • DOI: https://doi.org/10.1007/BF02913368

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