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Yao Lijun, Geng Lin, Yao Chongkai. THE PHENOMENON OF DOUBLE AGING PEAKS IN 27% vol-SiCw/6061Al COMPOSITE AT 170℃[J]. Acta Materiae Compositae Sinica, 1996, 13(1): 35-39.
Citation: Yao Lijun, Geng Lin, Yao Chongkai. THE PHENOMENON OF DOUBLE AGING PEAKS IN 27% vol-SiCw/6061Al COMPOSITE AT 170℃[J]. Acta Materiae Compositae Sinica, 1996, 13(1): 35-39.
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THE PHENOMENON OF DOUBLE AGING PEAKS IN 27% vol-SiCw/6061Al COMPOSITE AT 170℃

  • Harbin Institute of Technology, Harbin 150001

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  • Received Date: February 24, 1994
  • Revised Date: September 24, 1994
    Abstract
  • Abstract The 27% vol-SiCw/6061A1 composite was fabricated by squeeze casting method.The aging dynamic process of the 27% ovol-SiCw/6061A1 composite was studied at 170℃,and double aging peaks were found in the aging dynamic curves of the composite.The results of DSC analysis showed that the precipitation temperature of β' and β phase in the composite decreased by 56℃ and 76℃,respectively as compared with that in the 6061A1 alloy,from which the effects of the SiC whiskers on the precipitation processes of the composite were discussed.It is concluded that the double aging peaks resulted from the transformation of the precipitation from G.P.zones to β' phase,and this conclusion was further proved by TEM observation of the morphology of the precipitations in the 27% ovol-SiCw/6061A1 composite.
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