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FATIGUE STRENGTH OF EXTRUDED SiC_W/ LD_2 COMPOSITE AND ITS INFLUENCING FACTORS |
WANG Dezun; LIU Jun (Harbin Institute of Technology); YU Weicheng; WANG Zhongguang(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy of Sciences); YAO Zhongkai(Harbin Institute of Technology)(Manuscript received 23 April; 1993) |
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Cite this article:
WANG Dezun; LIU Jun (Harbin Institute of Technology); YU Weicheng; WANG Zhongguang(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy of Sciences); YAO Zhongkai(Harbin Institute of Technology)(Manuscript received 23 April; 1993). FATIGUE STRENGTH OF EXTRUDED SiC_W/ LD_2 COMPOSITE AND ITS INFLUENCING FACTORS. Acta Metall Sin, 1994, 30(4): 176-180.
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Abstract Studies were made on the fatigue strength of the extruded 16 v.-% SiC whiskers reinforced LD2 composite with two varieties of whisker orientation and two regimes of aging. Observations on their microstructure before or after fatiguing and on fatigue fracture surfaces were carried out under TEM and SEM.Experimental results show that the composite has a superior high-cycle fatigue strength to the unreinforoed alloy, especially, of the longitudinal orientation in comparison with transverse one.Correspondent:WANG Dezun, associate professor, Harbin Institute of Technology, Harbin 150006
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Received: 18 April 1994
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