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    The Early Metallographic Studies of Chih-Hung Chou on the Formation and Morphology of Widmanstatten Structure and Martensite

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    One of the early studies concerning the detailed microstructural aspects of phase transformations in iron-carbon alloys was performed by Chih-Hung Chou (Ph.D., Harvard, 1928), a student of Professor Albert Sauveur. The research describes the formation of Widmanstatten structure and martensite in iron-carbon alloys possessing a broad range of carbon contents and heat treated using a broad range of cooling rates. A unique mercury quench method is described. This research work was never fully published.

    The present paper shows original photomicrographs and portions of the written text from the dissertation, and seeks to clarify and reinterpret these in terms of our present understanding of ferrous phase transformations. Also included is the background history of the introduction of modern industry and science in China, and Chou's personal reminiscences of Professor Sauveur.


    metallography, history, iron-carbon alloys, martensite, Widmanstatten structures, surface relief, metallurgical specimens, microstructure, metallographic techniques

    Author Information:

    Notis, MR
    Lehigh University, Bethlehem, PA

    Marder, AR
    Lehigh University, Bethlehem, PA

    Chou, YT
    Lehigh University, Bethlehem, PA

    Committee/Subcommittee: E04.01

    DOI: 10.1520/STP25098S