Effect of solution and aging treatment on impact properties of 7005 aluminum alloy

doi:10.13251/j.issn.0254-6051.2020.08.033

Abstract

Abstract: Impact properties of the 7005 aluminum alloy after solution and aging treatment was studied by means of OM, SEM and impact test machine. The results show that coarse grain boundaries are observed in the as-cast 7005 aluminum alloy, and there are a large number of non-equilibrium precipitated phases in the grain, while after solution and aging treatment, the number of precipitated phases in the grain decreases greatly. The precipitate phases on the as-cast alloy grain boundary contain more Zn, Mg and Mn elements. After solution and aging treatment the precipitated phases existed in grain are η (MgZn₂) equilibrium phase mainly, and there are still some residual precipitated phases AlZnMg(Mn) on grain boundary because of the good thermal stability, which leads to dissolution incomplete. After solution and aging treatment, the solid solubility increases because most precipitated phase particles in the grain dissolve into the matrix, which causes the strength of the alloy to increase and improves the impact properties of the 7005 aluminum alloy.

Key words: 7005 aluminum alloy, solution and aging treatment, precipitated phase, impact properties

CLC Number:

TG166.3

Zhang Jianyu, Wang Zheng, Wang Jinlu, Ke Wei, Lu Qigao. Effect of solution and aging treatment on impact properties of 7005 aluminum alloy[J]. Heat Treatment of Metals, 2020, 45(8): 170-172.

References

[1]吴文祥, 陈琦, 马科, 等. 电解铝液制备7005铝合金的铸态组织与性能[J]. 特种铸造及有色合金, 2008, 28(12): 973-975.
Wu Wenxiang, Chen Qi, Ma Ke, et al. As-cast microstructure and properties of 7005 aluminum alloy produced by electrolytic liquid-Al[J]. Special Casting and Nonferrous Alloys, 2008, 28(12): 973-975.
[2]李占明, 朱有利, 辛毅. 超声冲击处理对2A12铝合金焊接接头疲劳性能的影响[J]. 航空材料学报, 2011, 31(2): 28-32.
Li Zhanming, Zhu Youli, Xin Yi. Influence of ultrasonic impact treatment on fatigue properties of 2A12 aluminum alloy welded joints[J]. Journal of Aeronautical Materials, 2011, 31(2): 28-32.
[3]王亚荣, 黄文荣, 莫仲海. 2A14高强铝合金电子束焊接工艺优化及接头组织分析[J]. 焊接学报, 2011, 32(12): 93-96.
Wang Yarong, Huang Wenrong, Mo Zhonghai. Optimization of parameters and joint microstructure of electrode beam welding of 2A14 Al alloy[J]. Transactions of the China Welding Institution, 2011, 32(12): 93-96.
[4]王正安, 汪明朴, 李周, 等. 轨道交通车辆大型材用7005铝合金的热处理特性[J]. 中国有色金属学报, 2010, 20(6): 1110-1115.
Wang Zheng'an, Wang Mingpu, Li Zhou, et al. Heat treatment characteristic of 7005 Al alloy employed in railway trains[J]. Chinese Journal of Nonferrous Metals, 2010, 20(6): 1110-1115.
[5]马冬威, 张春, 张元好, 等. 固溶工艺对6061铝合金组织和拉伸性能的影响[J]. 金属热处理, 2020, 45(5): 74-77.
Ma Dongwei, Zhang Chun, Zhang Yuanhao, et al. Effect of solution process on microstructure and tensile properties of 6061 aluminum alloy[J]. Heat Treatment of Metals, 2020, 45(5): 74-77.
[6]孙跃军, 崔泽文, 高艳静, 等. 双级时效对液态模锻6061铝合金性能的影响[J]. 金属热处理, 2019, 44(1): 26-29.
Sun Yuejun, Cui Zewen, Gao Yanjing, et al. Effect of two-stage aging on properties of liquid forged 6061 aluminum alloy[J]. Heat Treatment of Metals, 2019, 44(1): 26-29.
[7]冯展鹰, 赵仁祥. 7005铝合金热处理工艺研究[J]. 电子机械工程, 2006(5): 49-51.
Feng Zhanying, Zhao Renxiang. A study on heat treatment process of the 7005 alloy[J]. Electro-Mechanical Engineering, 2006(5): 49-51.

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