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    National Tsing Hua University Institutional Repository > 工學院  > 材料科學工程學系 > 期刊論文 >  LONG-PERIOD STACKING-FAULT STRUCTURE OF THE NEEDLE-LIKE PHASE IN A DUPLEX FE-MN-AL-C ALLOY


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52716


    Title: LONG-PERIOD STACKING-FAULT STRUCTURE OF THE NEEDLE-LIKE PHASE IN A DUPLEX FE-MN-AL-C ALLOY
    Authors: HWANG KH;YANG WS;WU TB;WAN CM;BYRNE JG
    教師: 吳泰伯
    Date: 1991
    Publisher: Pergamon Press
    Relation: ACTA METALLURGICA ET MATERIALIA,Volume: 39,Issue: 5,Pages: 825-831,Published: MAY 1991
    Keywords: BETA' CUZN ALLOYS
    TRANSFORMATIONS
    Abstract: The purpose of this investigation was to study the crystal structure of the needle-like phase which appears in b.c.c. regions of water-quenched Fe-27.3 wt% Mn-6.7 wt% Al-0.22 wt% C alloy. The morphology, crystal structure, transformation mechanism and microstructure of the needle-like phase have been studied by transmission electron microscopy and electron diffraction. A structure change from the b.c.c. (matrix) to the 18R(51BAR)3 needle-like phase is proposed to occur by shearing in the <110>b.c.c. directions of the {110}b.c.c. planes in a five-to-one sequence repeated three times. Since we find a close relationship between the {110}b.c.c. and {111}f.c.c., we can utilize an existing description of 18R(51BAR)3 as a stacking sequence of ABCABC-BCABCA-CABCAB-A in terms of {111}f.c.c. planes.
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52716
    Appears in Collections:[材料科學工程學系] 期刊論文

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