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化学成分对7050合金扁锭成型性能的影响
引用本文:段玉波,唐剑,刁文武,牟力强.化学成分对7050合金扁锭成型性能的影响[J].重庆大学学报(自然科学版),2004,27(4):100-102117.
作者姓名:段玉波  唐剑  刁文武  牟力强
作者单位:西南铝业(集团)有限责任公司,西南铝业(集团)有限责任公司,西南铝业(集团)有限责任公司,西南铝业(集团)有限责任公司 重庆 401326,重庆 401326,重庆 401326,重庆 401326
摘    要:对用于生产航空材料受力厚板的7050合金扁锭的铸造工艺进行研究.由于7050合金的化学成分复杂,Cu、Zn元素含量高,Fe、Si杂质元素含量控制较低,同时扁锭的规格较大,宽厚比也较大,在铸造时具有极大的裂纹倾向,铸造成型性极差.通过对7050合金化学成分的优化,在生产允许条件下将Fe/Si比、Zn/Mg比提高到上限,Cu含量降低到下限,并且用块状Al-5Ti-1B和丝状Al-5Ti-1B进行联合晶粒细化,提高了合金的成型性,并铸造出成型的铸锭.

关 键 词:7050合金  扁锭  化学成分  成型性能  化学成分  合金扁锭  成型性能  影响  Alloy  Performance  Formation  Chemical  Composition  铸锭  晶粒细化  丝状  块状  下限  含量控制  允许条件  优化  铸造成型性  裂纹倾向  宽厚比  杂质元素
文章编号:1000-582X(2004)04-0100-03

Effect of Chemical Composition on Formation Performance of 7050 Alloy Billets
DUAN Yu-bo,TANG Jian,DIAO Wen-wu,MOU Da-qiang.Effect of Chemical Composition on Formation Performance of 7050 Alloy Billets[J].Journal of Chongqing University(Natural Science Edition),2004,27(4):100-102117.
Authors:DUAN Yu-bo  TANG Jian  DIAO Wen-wu  MOU Da-qiang
Abstract:The casting technology of 7050 alloy bilits is researched. that are used to produce slabs for air materials.Because the composition of 7050 alloy is very complex,the Cu and Zn elements contents are higher and Fe and Si impurity elements contents are controlled lower, at the same time ,the specification and the width-thickness ratio are large ,all of above result the tremendous crack trend when casting and bad casting formation performance . The formation performance of 7050 alloy has been improved and qualified billits are obtained by optimizing the composition of 7050 alloy, including raising Fe/Si ratio and Zn/Mg ratio ,reducing Cu content and adopting the joint refinement with block and silk shaped Al-5Ti-1B.
Keywords:7050 alloy  billits  chemical compoition  formation performance
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