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以前的研究者证明,在二元固溶体中存在着两类不同的蠕变性。当位错粘滞滑移是速率控制机理时,发现第一类固溶体显示出应力指数n=T=3。当蠕变机理由恢复过程,例如位错攀移控制时~5,第二类固溶体的特点是n值=5。以前曾报导过~6,在二元合金固溶体中添加微量的第三种金属,会大大影响其蠕变特性。本次实验的目的是研究添加0.3Fe(重量％)对二元合金系Al-2Mg(重量％)的蠕变特性的影响。实验用纯度不低于99.99％的基体金属制备
Previous researchers have shown that there are two different types of creep properties in binary solid solutions. When dislocation viscous slip is the rate control mechanism, the first type of solid solution was found to exhibit a stress index of n = T = 3. The second type of solid solution is characterized by an n value of 5 when the creep mechanism is governed by a recovery process such as dislocation climbing control ~ 5. It has been previously reported ~ 6 that adding a trace amount of a third metal to a binary alloy solid solution can greatly affect its creep properties. The purpose of this experiment was to investigate the effect of addition of 0.3Fe (wt%) on the creep properties of the binary alloyed Al-2Mg (wt%). Experiments with a purity of not less than 99.99% of the base metal preparation