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前言147合金为冶金部东北轻合金加工厂参照美国2219合金的化学成份,研制成功的高强可焊铝合金,属 Al-Cu-Mn 合金系。合金的化学成分与2219合金基本相同,主要成分与苏联Д120和我国的 LY16合金相似。它们之间的区别在于147合金除含有 LY16和Д20合金的基本组元 Cu、Mn 和 Ti 外,还加入了少量的 Zr 和 V,用以细化铸态晶粒和改善合
Preface 147 alloy for the Ministry of Metallurgical Northeast Light Alloy Processing Factory with reference to the United States 2219 alloy chemical composition, the successful development of high-strength weld aluminum alloy, is an Al-Cu-Mn alloy system. Alloy chemical composition and 2219 alloy is basically the same, the main components of the Soviet Union and China Д120 LY16 alloy similar. The difference between them is that the 147 alloy contains a small amount of Zr and V in addition to the basic components Cu, Mn and Ti of the LY16 and Д20 alloys for refining the as-cast grains and improving the co-occurrence