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对合金沉淀颗粒劈裂过程的模拟发现晶核长大过程中由结构和温度变化引起的体积变化的同时也发生弹性能坍塌现象.弹性能坍塌方式可以是瞬间坍塌方式也可以是渐进坍塌方式,计算结果表明:沉淀是否发生劈裂与弹性能坍塌时刻有关,而沉淀发生何种劈裂与弹性能坍塌的速率有关.对弹性能坍塌速率较快的瞬间坍塌,沉淀是否发生劈裂只决定于弹性能坍塌的时刻,在沉淀晶核长大到直径为80l到90l之间大小时引入瞬间弹性能坍塌,则沉淀发生4块型劈裂.对弹性能坍塌速率较慢的渐进坍塌,在引入时刻大于τ=7.5×103s的情况下,沉淀发生且只发生两块型劈裂.
The simulation of the splitting process of the precipitated particles in the alloy also shows that the collapse of the elastic energy occurs at the same time as the volume change caused by the structure and temperature changes during the growth of the nuclei.The method of elastic energy collapse can be instantaneous collapse or gradual collapse, The results show that whether the splitting of the sedimentation is related to the moment of collapse of the elastic property and the splitting of the sedimentation is related to the rate of slump of the elastic property.If the instantaneous collapse of the elastic energy collapse rate is rapid or not, At the moment when the elastic property collapses, the elastic energy can collapse instantaneously when the precipitated nucleus grows up to the size of 80l to 90l in diameter, and then 4 types of fractures occur in the sedimentation.As for the gradual collapse of elastic energy slump rate, When the time is larger than τ = 7.5 × 103s, precipitation occurs and only two types of cleavage occur.