时效前的冷变形可以加速时效析出过程，在时效的初期尤为明显。
The process of precipitation can be accelerated as the cold deformation before aging.
增强体的加入既能加速时效前期沉淀析出又可加快时效后期复合材料的软化，但不改变基体沉淀相的析出顺序，而只影响其析出速度。
Addition of mullite short fibre can accelerate precipitation in early aging stage and speed up composite's soften rate in later aging stage, but not alter the precipitation sequence in matrix.
而时效前冷变形可以增加合金内部位错等缺陷的数量，加速了合金第二相的析出。
The deformation before aging can increase the defect's quantity in the alloy, and accelerate the precipitating of the second phase.
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