BUTTERFLY MARTENSITE NUCLEI IN AN Fe-Ni-V-C ALLOY

Acta Metall Sin

1991, Vol. 27

Issue (3): 27-32 DOI:

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BUTTERFLY MARTENSITE NUCLEI IN AN Fe-Ni-V-C ALLOY

CHEN Qizhi;WU Xingfang;KE Jun T. Ko University of Science and Technology Beijing

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CHEN Qizhi;WU Xingfang;KE Jun T. Ko University of Science and Technology Beijing. BUTTERFLY MARTENSITE NUCLEI IN AN Fe-Ni-V-C ALLOY. Acta Metall Sin, 1991, 27(3): 27-32.

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Abstract The butterfly martensite nuclei in an Fe-Ni-V-C alloy were observedunder TEM to consist of the enveloping dislocations with Burgers vector 1/2[011]_(fcc)and the arrays of dislocations with Burgers vector 1/2[110]_(fcc) piled up within theformers. The enveloping dislocations and the arrays of dislocations provide the re-quired shear when the planes (111)_(fcc) move over each other to alter their stackingorder and change into the planes (110)_(bcc) respectively. The neccessary adjustment ofthe spacings is provided by the dislocations in martensite. The crystallographic rela-tionship after double-shear is K-S one.

Key words: butterfly martensite nuclei enveloping dislocation piling dislocation

Received: 18 March 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I3/27

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