合金元素对Au的强化效应与应用

Strengthening of Gold via Alloying Elements

本文讨论了二元Au合金系中富Au端相图特征 ,合金元素在Au合金中分布及强化与脆化倾向性 ,分析了合金元素对Au的固溶强化参数和沉淀强化参数。轻金属 (尤其是Be)具有最高固溶强化参数 ,Ti具有最高沉淀强化参数 ;稀土金属兼具高的固溶强化参数和沉淀强化参数 ,是强化Au与Au合金的重要合金元素。讨论了某些实用Au合金的强化机制。

The characteristic of gold-rich phase diagrams in binary Au alloy systems,the tendency of distribution and of strengthening of alloying elements in and to gold were summarized in present paper.The parameters of solid solution strengthening and precipitation strengthening of alloying elements to gold were analyzed.The light metals,especially beryllium,have the highest solid solution strengthening parameter,whereas titanium has the highest precipitation strengthening parameter.The rare-earths have both parameters of high solid solution strengthening and high precipitation strengthening.The strengthening mechanisms of some practical gold alloys were discussed.