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随着现代化飞行技术的发展,对结构材料的要求日益严格。自六十年代以来,国外通过调整、改变合金成分,降低杂质含量,改进熔炼铸造工艺及热处理工艺,来控制第二相质点数量、大小及分布状态,取得了明显效果。7050合金就是美国铝业协会注册的一种新合金,其成分见表1。为扩大合金的使用范围还研究了十多种热处理状
With the development of modern flight technology, the requirements for structural materials have become increasingly stringent. Since the 1960s, foreign countries have achieved remarkable results by adjusting and changing the alloy composition, reducing the impurity content, improving the smelting casting process and the heat treatment process to control the quantity, size and distribution of the second phase particles. 7050 alloy is a new alloy registered by the Aluminum Association of the United States, the composition shown in Table 1. In order to expand the scope of the alloy also studied a dozen heat treatment