6070铝合金的均匀化热处理

doi:10.13251/j.issn.0254-6051.2023.03.009

金属热处理 ›› 2023, Vol. 48 ›› Issue (3): 51-56.DOI: 10.13251/j.issn.0254-6051.2023.03.009

6070铝合金的均匀化热处理

赵宇¹, 魏午¹, 黄晖¹, 刘贞山², 任思蒙², 董阳³, 王玉刚³, 石薇⁴

1.北京工业大学新型功能材料教育部重点试验室, 北京 100124;
2.中铝材料应用研究院有限公司, 北京 102209;
3.山东兖矿轻合金有限公司, 山东邹城 273515;
4.广东腐蚀科学与技术创新研究院, 广东广州 510530

收稿日期:2022-09-30 修回日期:2022-12-25 出版日期:2023-03-25 发布日期:2023-04-25
通讯作者: 魏午,副教授,博士,E-mail:weiwu@bjut.edu.cn。
作者简介:赵宇(1995—),男,硕士研究生,主要研究方向为铝合金微合金化,E-mail:1147032506@qq.com。
基金资助:
国家重点研发计划(2021YFB3704203)

Homogenization heat treatment of 6070 aluminum alloy

Zhao Yu¹, Wei Wu¹, Huang Hui¹, Liu Zhenshan², Ren Simeng², Dong Yang³, Wang Yugang³, Shi Wei⁴

1. Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China;
2. Chinalco Materials Application Research Institute Co., Ltd., Beijing 102209, China;
3. Shandong Yankuang Light Alloy Co., Ltd., Zoucheng Shandong 273515, China;
4. Institute of Corrosion Science and Technology, Guangzhou Guangdong 510530, China

Received:2022-09-30 Revised:2022-12-25 Online:2023-03-25 Published:2023-04-25

摘要/Abstract

摘要： 通过OM、SEM、EDS、DSC和电导率等测试方法,研究了6070合金的均匀化热处理工艺及微观组织演变。结果表明,6070合金铸态组织中,大量非平衡凝固产生的一次相Mg₂Si沿晶界聚集分布,圆盘状Q相分布于晶内。合金经535 ℃×12 h均匀化处理后,铸态一次相基本回溶,均匀化效果较好。均匀化后合金元素主要以细小弥散相形式在铝基体中析出,导致合金导电率升高。550 ℃为合金起始过烧温度,合金组织中开始出现近似三角形的复熔相和晶界复熔变宽的过烧特征,随着均匀化温度的升高和时间延长,合金过烧加重,导电率下降,晶粒和含Mn弥散相尺寸变大,同时形成粗大过烧相Q相。

关键词: 6070铝合金, 均匀化, 微观组织, 过烧, 导电率

Abstract: Homogenization heat treatment process and microstructure evolution of 6070 alloy were studied by means of OM, SEM, EDS, DSC and conductivity measurements. The results show that in the as-cast 6070 alloy, a large amount of Mg₂Si primary phases produced by non-equilibrium solidification are aggregated and distributed along the grain boundary, and disc-shaped Q phase is distributed in the grains. After 535 ℃×12 h homogenization heat treatment, the primary phase in the as-cast alloy is basically redissolved, and the homogenization effect is good. After homogenization, the alloying elements are mainly precipitated in the aluminum matrix in the form of fine dispersed phase, leading to the increase of conductivity. The overburning starting temperature of the alloy is 550 ℃, at which the overburned characteristics including nearly-triangular remelting phase and grain boundary widening by remelting begin to appear in the alloy. With the increase of homogenization temperature and extension of time, the overburning of the alloy increases and the conductivity decreases, the grain size and Mn containing dispersed phase size become larger, and the coarse overburned phase Q is formed concurrently.

Key words: 6070 aluminum alloy, homogenization, microstructure, overburning, conductivity

中图分类号:

TG166.3

赵宇, 魏午, 黄晖, 刘贞山, 任思蒙, 董阳, 王玉刚, 石薇. 6070铝合金的均匀化热处理[J]. 金属热处理, 2023, 48(3): 51-56.

Zhao Yu, Wei Wu, Huang Hui, Liu Zhenshan, Ren Simeng, Dong Yang, Wang Yugang, Shi Wei. Homogenization heat treatment of 6070 aluminum alloy[J]. Heat Treatment of Metals, 2023, 48(3): 51-56.

参考文献

[1]王芝秀, 李海, 顾建华, 等. Cu含量对Al-Mg-Si-Cu合金微观组织和性能的影响[J]. 中国有色金属学报, 2012, 22(12): 3348-3355.
Wang Zhixiu, Li Hai, Gu Jianhua, et al. Effect of Cu content on microstructures and properties of Al-Mg-Si-Cu alloys[J]Chinese Journal of Nonferrous Metals, 2012, 22(12): 3348-3355.
[2]王祝堂. 铝合金及其加工手册[M]. 3版. 长沙: 中南大学出版社,2005.
[3]杨守杰, 戴圣龙. 航空铝合金的发展回顾与展望[J]. 材料导报, 2005, 19(2): 76-80.
Yang Shoujie, Dai Shenglong. A glimpse at the development and application of aluminum alloys in aviation industry[J]. Materials Review, 2005, 19(2): 76-80.
[4]Gupta A K, Lloyd D J, Court S A. Precipitation hardening in Al-Mg-Si alloys with and without excess Si[J]. Materials Science and Engineering A, 2001, 316(1/2): 11-17.
[5]Man J, Jing L, Jie S G. The effects of Cu addition on the microstructure and thermal stability of an Al-Mg-Si alloy[J]. Journal of Alloys and Compounds, 2007, 437(1/2): 146-150.
[6]廖儒福, 林高用, 张锐, 等. 6082铝合金铸锭均匀化热处理工艺研究[J]. 有色金属加工, 2013, 42(3): 35-39.
Liao Rufu, Lin Gaoyong, Zhang Rui, et al. Research on homogenization heat treatment of 6082 aluminum alloy[J]. Nonferrous Metals Processing, 2013, 42(3): 35-39.
[7]曾渝, 尹志民, 潘青林, 等. 超高强铝合金的研究现状及发展趋势[J]. 中南工业大学学报, 2002, 33(6): 582-596.
Zeng Yu, Yin Zhimin, Pan Qinglin, et al. Present research and developing trends of ultrahigh strength aluminum alloys[J]. Journal of Central South University of Technology, 2002, 33(6): 582-596.
[8]佟长清, 王春香. 铝合金的过烧[J]. 轻金属, 1983(6): 46-51.
[9]宁爱林, 蒋寿生, 彭北山. 铝合金的力学性能及其电导率[J]. 轻金属, 2005(6): 34-36.
Ning Ailin, Jiang Shousheng, Peng Beishan. Mechanical properties and electrical conductivity of aluminum alloys[J]. Light Metals, 2005(6): 34-36.
[10]贺冠雄. 铝合金过烧组织无损鉴别分析[J]. 热加工工艺, 2016, 45(24): 256-258.He Guanxiong. Non destructive identification analysis of overburning microstructure of aluminum alloy[J]. Hot Working Technology, 2016, 45(24): 256-258.
[11]张珊珊. Al-Mg-Si合金铸造态组织及其铸锭均匀化处理研究[D]. 沈阳: 东北大学, 2011.
[12]Chakrabarti D J, Laughlin D E. Phase relations and precipitation in Al-Mg-Si alloys with Cu additions[J]. Progress in Materials Science, 2004, 49(3/4): 389-410.
[13]Kim Insu, Song Minyoung, Kim Jaehwang. Nanocluster formation and two-step aging behavior in Al-Mg-Si(-xCu: x=0-4 mass%) alloys[J]. Journal of Alloys and Compounds, 2021, 857: 157596.
[14]Chakrabarti D J, Murray J L. Eutectic melting in Al-Cu-Mg-Si alloys[J]. Materials Science Forum, 1996, 217-222: 177-182.
[15]梁基谢夫 Н П. 金属二元系相图手册[M]. 郭青蔚, 译. 北京: 化学工业出版社, 2009.
[16]李慎兰, 黄志其, 陈维平, 等. Al-Mg-Si-Mn合金的TTT曲线[J]. 材料热处理学报, 2013, 34(4): 57-62.
Li Shenlan, Huang Zhiqi, Chen Weiping, et al. TTT curve of an Al-Mg-Si-Mn alloy[J]. Transactions of Materials and Heat Treatment, 2013, 34(4): 57-62.
[17]李学朝. 铝合金材料组织与金相图谱[M]. 北京: 冶金工业出版社, 2010.
[18]刘静, 温澄, 甘俊旗, 等. 合金元素对纯铝导电性能的影响机制[J]. 材料导报, 2021, 35(24): 24101-24106.
Liu Jing, Wen Cheng, Gan Junqi, et al. Influencing mechanisms of alloying elements on the electrical conductivity of pure aluminum[J]. Materials Reports, 2021, 35(24): 24101-24106.
[19]Gupta A K, Jena A K, Chaturvedi M C. Insoluble phase in Al-1.52Cu-0.75Mg alloys containing silicon[J]. Materials Science & Technology, 1987, 3(12): 1012-1018.

6070铝合金的均匀化热处理

Homogenization heat treatment of 6070 aluminum alloy

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