【摘要】 研究了冷热循环处理对SiCp2024Al复合材料尺寸稳定性的影响。结果表明,冷热循环处理可以降低复合材料中的残余应力,促进基体合金的时效析出,从而提高了复合材料在交变温度场下的尺寸稳定性。冷热循环处理的下限温度越低,即上下限温差越大,降低残余应力效果越显著,对时效析出的促进作用越大,复合材料的尺寸稳定性越好。更多还原

【Abstract】 The effect of thermal-cold cycling treatment on the dimensional stability of SiCp/2024Al composite was studied.The results show that the thermal-cold cycling treatment can reduce the residual stress in the composite and accelerate the aging precipitation of the matrix alloy,thus improve the dimensional stability of the composite in the alternate changing temperature field.The lower the cycling lower limit temperature,i.e.the bigger the difference between the upper and lower temperature,the more obvious the effect of decreasing residual stress and the greater the effect of accelerating aging precipitation,so that the better the dimensional stability of the composite.更多还原