Formation Mechanism and Solutions of Coarse Intermetallic Compound in Modified 3003 Aluminum Alloy
摘 要
通过化学成分分析、显微组织观察、显微硬度测试、扫描电镜观察及能谱分析等方法,研究了改性3003铝合金中粗大金属间化合物的形貌及其对性能的影响,探讨了其形成机理,并提出控制粗大金属间化合物的工艺措施。结果表明:改性3003铝合金铸锭中存在平均尺寸大于100 μm的粗大金属间化合物,平均硬度为315 HV,比基体的高很多;金属间化合物的形成与铁、钛、锰等元素的偏析有关,当铝合金中铁元素的质量分数控制在0.13%以下时,可以避免粗大金属间化合物的形成。
Abstract
The morphology and effect on properties of coarse intermetallic compound in modified 3003 aluminum alloy were studied by chemical composition analysis, microstructure observation, micro-hardness testing, scanning electron microscopy observation and energy spectrum analysis, and the forming mechanism was discussed. The solutions of controlling the coarse intermetallic compound were proposed. The results show that there was coarse intermetallic compound with average size larger than 100 μm in modified 3003 aluminum alloy ingot. The average hardness of the intermetallic compound was 315 HV and much higher than that of matrix. The formation of the intermetallic compound was related to the segregation of iron, titanium and manganese elements. When the mass fraction of iron element in the modified 3003 aluminum alloy was controlled below 0.13%, the coarse intermetallic compound could be avoided.
中图分类号 TG146.2 DOI 10.11973/jxgccl201802011
所属栏目 试验研究
基金项目
收稿日期 2017/1/12
修改稿日期 2017/12/11
网络出版日期
作者单位点击查看
备注张海锋(1984-),男,河北张家口人,工程师,硕士
引用该论文: ZHANG Haifeng,CHEN Qin. Formation Mechanism and Solutions of Coarse Intermetallic Compound in Modified 3003 Aluminum Alloy[J]. Materials for mechancial engineering, 2018, 42(2): 47~51
张海锋,陈琴. 改性3003铝合金中粗大金属间化合物的形成机理及解决措施[J]. 机械工程材料, 2018, 42(2): 47~51
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【8】邢强. 5XXX系和7XXX系铝合金中粗大金属间化合物的研究[J]. 有色金属加工,2009,38(6):166-18.
【9】高家诚,崔先友,杨荣东,等. 7A52合金铸锭漏斗底结物形成原因[J]. 有色金属(冶炼部分),2007(4):39-42.
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