一、引言随着现代飞机和宇航技术的发展,用户对铝合金材料的内部质量提出愈来愈高的要求。决定铝合金材料内部质量的主要因素有以下四个:铝合金铸锭的组织和结构;金属的纯洁度;压力加工方法和工艺参数;热处理工艺。本文对金属纯洁度问题进行讨论。 I. INTRODUCTION With the development of modern aircraft and aerospace technology, users have higher and higher requirements on the internal quality of aluminum alloy materials. The main factors that determine the internal quality of aluminum alloy materials are the following four: the structure and structure of the aluminum alloy ingot; the purity of the metal; the pressure processing methods and process parameters; heat treatment process. This article discusses the issue of metal purity.