Effect of Fe addition on microstructure and mechanical properties of Al-9Mg-2.6Si Alloy

YAN Feng1, ZHAO Yu-hong1, JI Shou-xun2

（1. School of Material Science and Engineering, North University of China, Taiyuan 030051, China； 2. Brunel Centre for Advanced Solidication Technology (BCAST), Brunel University, Uxbridge, Middlesex, UB8 3PH, UK）

Abstract： This paper presents the effect of Fe on the microstructure and mechanical properties of Al-9Mg-2.6Si alloy. The Fe addition in the Al-9Mg-2.6Si alloy can slightly increase the yield strength but decrease the elongation. With a much higher Fe addition around 1.6wt.%, the elongation of the alloy can still maintain a usable level of 5%. This alloy has shown a high tolerance on the Fe contamination.

Key words： aluminium alloys;  iron phase;  microstructure;  mechanical properties

CLD number： TG146.2 Document code： A

Article ID： 1674-8042（2017）03-0295-05  doi： 10.3969/j.issn.1674-80422017-03-014

 References

［1］Immarigeon J P, Holt R T, Koul A K, et al. Lightweight materials for aircraft applications. Materials Characterization, 1995, 35(1)：  41-67.
［2］Heinz A, Haszler A, Keidel C, et al. Recent development in aluminium alloys for aerospace applications. Materials Science and Engineering A, 2000, 280(1)： 102-107.
［3］Schaffer P L. Recent developments in aluminum high pressure die casting. Die Casting Engineer, 2012, 56： 20-23.
［4］Thirugnanam M. Modern high pressure die-casting processes for aluminium castings. Indian Foundry Journal, 2013, 59： 36-41.
［5］JI Shou-xun, WANG Yun, Watson D, et al. Microstructural evolution and solidification behavior of Al-Mg-Si alloy in high-pressure die casting. Metallurgical and Materials Transactions A, 2013), 44(7)： 3185-3197.
［6］Abouei V, Saghafian H, Shabestari S G, et al. Effect of Fe-rich intermetallics on the wear behavior of eutectic Al-Si piston alloy. Materials & Design, 2010, 31(7)： 3518-3524.
［7］Burapa  R, Janudom S, Chucheep T, et al. Effects of primary phase morphology on mechanical properties of Al-Si-Mg-Fe alloy in semi-solid slurry casting process.  Transactions of Nonferrous Metals Society of China, 2010, 20(S3)： 857-861.

铁对Al-9Mg-2.6Si合金微观组织与性能的影响

闫锋1， 赵宇宏1， 冀守勋2

（1. 中北大学 材科学与工程学院， 山西 太原 030051； 2. 布鲁奈尔大学 布鲁奈尔先进凝固技术中心， 英国）

摘要：本文介绍了Fe对Al-9Mg-2.6Si合金的显微组织和力学性能的影响。  Al-9Mg-2.6Si合金中的Fe的添加可以小幅度提高屈服强度， 但是伸长率会相应下降。 提高Fe含量到1.6wt.% 合金仍具有较高延展性（5%）， 该合金对Fe污染具有较高容忍度。

关键词：铝合金； 含铁相； 微观组织； 机械性能

引用格式：YAN Feng, ZHAO Yu-hong, JI Shou-xun. Effect of Fe addition on microstructure and  mechanical properties of Al-9Mg-2.6Si Alloy. Journal of Measurement Science and Instrumentation, 2017, 8(3)： 295-299. ［doi： 10.3969／j.issn.1674-8042.2017-03-14］

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