超高压条件下凝固界面的稳定性
来源期刊:中国有色金属学报2000年第4期
论文作者:胡火生 于溪凤 张国志 郑翠侠 王涛 贾光霖 郝兆印 郭学彬
文章页码:484 - 486
关键词:高压凝固; Al-Si合金; 胞枝晶转变; 凝固界面
Key words:high pressure solidification; Al-Si alloys; cellular-dendritic transition; solidification interface
摘 要:对Al-Si合金在3.6~5.5 GPa高压下凝固形成的组织与常压凝固组织进行了对比,对高压下的胞枝晶转变进行了分析。 发现高压对合金固溶度和扩散系数的影响是引起高压凝固组织变化的主要原因。
Abstract: The structure of Al-Si alloy solidified at 3.3~5.5 GPa pressure was compared with that at normal pressure, and the mechanism of the change from cellular crystal to dendritic crystal was studied. The results show that the changes of solid solubility and diffusioncoefficient at high pressure are the main cause of structure changes.