residual stresses and deformation behaviour in a sic_p/al composite
Author(s): SUN Zhengming LI Jiabao WANG Zhongguang LI Weijie ZHOU Yanchun ** State Key Lab.for Fatigue and Fracture of Materials, Institute of Metal Research, Academia Sinica, Shenyang, 110015, China+ To whom correspondence should be addressed
Pages: 107-114
Year: 1992 Issue: 2
Journal: Journal of Materials Science & Technology
Keyword: metal matrix composites; residual stress; deformation behaviour;
Abstract: <正> Experiments were conducted to determine theresidual stresses with X-ray diffraction in the ma-trix of a SiC/Al composite after different thermaltreatments,and to investigate the stress-straincharacteristics and fracture behaviour of the com-posite.It was found that there existed a tensileresidual stress in the matrix and both thermal cy-cling between room temperature and 350℃ and lowtemperature treatment in liquid nitrogen reducedthe residual stress.The results of the strengthdifferential effect and Bauschinger effect were con-sistent with the results of residual stressmeasurements.The tensile residual stresses in the Almatrix enhanced the strength differential effect.Themagnitude of Bauschinger effect is greater for a testinitially started in compression than that in tension.
Pages: 107-114
Year: 1992 Issue: 2
Journal: Journal of Materials Science & Technology
Keyword: metal matrix composites; residual stress; deformation behaviour;
Abstract: <正> Experiments were conducted to determine theresidual stresses with X-ray diffraction in the ma-trix of a SiC/Al composite after different thermaltreatments,and to investigate the stress-straincharacteristics and fracture behaviour of the com-posite.It was found that there existed a tensileresidual stress in the matrix and both thermal cy-cling between room temperature and 350℃ and lowtemperature treatment in liquid nitrogen reducedthe residual stress.The results of the strengthdifferential effect and Bauschinger effect were con-sistent with the results of residual stressmeasurements.The tensile residual stresses in the Almatrix enhanced the strength differential effect.Themagnitude of Bauschinger effect is greater for a testinitially started in compression than that in tension.
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