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A study on morphology and plate mean dimensions in Fe-Ni and Fe-Ni-Cr alloys

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Abstract

A systematic study has been carried out in Fe-Ni as well as Fe-Ni-Cr alloys to understand whether the factors related to the burst temperature or alloy composition are responsible for various morphologies as well as mean plate dimensions. A systematic procedure has been adopted to give a set of Fe-Ni-Cr alloys with constant transformation burst temperature (M b ). While maintaining theM b constant, it is found that Cr replaces more and more Ni with further additions. The martensitic transformation progresses predominantly through a spreading-out process. The aspect ratio (c/r) follows a parabolic relation withM b , whereas it is linear with respect to Ni content in the case of Fe-Ni alloys. In Fe-Ni-Cr alloys, the aspect ratio, however, does not show any relationship with composition at 133 K. The appearance of different morphologies and the variation in different features within a morphology are seen in alloys with different compositions having the sameM b .

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  1. Physical Metallurgy Group, Department of Applied Mechanics, Indian Institute of Technology, 110 016, New Delhi, India

    P. Visvesvaran (Representative for Power Components Technology Limited, Switzerland)

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  1. P. Visvesvaran
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Visvesvaran, P. A study on morphology and plate mean dimensions in Fe-Ni and Fe-Ni-Cr alloys. Metall Mater Trans A 27, 973–980 (1996). https://doi.org/10.1007/BF02649765

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  • DOI: https://doi.org/10.1007/BF02649765

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