回归再时效对6082合金组织及电化学腐蚀性的影响

王鑫; 刘春鹏; 吕海波; 索忠源; 王毅坚

doi:10.15980/j.tzzz.2019.01.023

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回归再时效对6082合金组织及电化学腐蚀性的影响
Effects of Retrogression Reaging on Microstructure and Electrochemical Corrosion Resistance of 6082 Aluminum Alloy
- 角色： First author 第一作者
- 机构：
  吉林化工学院机电工程学院
王鑫
1 ，
- 机构：
  大连交通大学材料科学与工程学院
刘春鹏
2 ，
- 机构：
  吉林化工学院机电工程学院
吕海波
1 ，
- 机构：
  吉林化工学院机电工程学院
索忠源
1 ，
- 角色： Corresponding author 通讯作者
- 机构：
  吉林化工学院机电工程学院
- 邮箱： jlwyj1961@163.com
王毅坚
1
2019年39卷第1期页码：84-87
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.01.023

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引用
[1]王鑫,刘春鹏,吕海波,索忠源,王毅坚.回归再时效对6082合金组织及电化学腐蚀性的影响[J].特种铸造及有色合金,2019,39(01):84-87.

Wang Xin, Liu Chunpeng, LüHaibo, et al. Effects of Retrogression Reaging on Microstructure and Electrochemical Corrosion Resistance of 6082 Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2019,39(1):84-87.
[1]王鑫,刘春鹏,吕海波,索忠源,王毅坚.回归再时效对6082合金组织及电化学腐蚀性的影响[J].特种铸造及有色合金,2019,39(01):84-87. DOI： 10.15980/j.tzzz.2019.01.023.

Wang Xin, Liu Chunpeng, LüHaibo, et al. Effects of Retrogression Reaging on Microstructure and Electrochemical Corrosion Resistance of 6082 Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2019,39(1):84-87. DOI： 10.15980/j.tzzz.2019.01.023.

摘要

采用电化学方法研究了经不同回归再时效工艺处理的6082铝合金在3.5%的NaCl溶液中的腐蚀行为,通过显微组织、XRD和极化曲线分析发现,6082铝合金组织为α-Al基体上均匀分布且取向明显的β-Mg2Si颗粒及单质Si;回归处理后铝合金基体中几乎没有强化相,再时效晶内析出细小弥散的强化相,晶界上形成粗大断续状的平衡态组织。回归工艺为220℃×40min与220℃×60min时可以提高6082铝合金耐电化学腐蚀性能。

译

Abstract

The corrosion behavior of 6082 aluminum alloy after different retrogression reaging treatment in 3.5%NaCl solution was analyzed by electrochemical method,microstructural observation,XRD and polarization curves.The results show that the microstructure of 6082 aluminum alloy is composed of a uniform distribution of beta-Mg2 Si particles and elementary Si with obvious orientation on the matrix ofα-Al solid solution.After regression treatment,there are almost no strenghening phases in the aluminum alloy matrix,and then the fine diffuse strengthening phase is precipitated in the grain after reaging treatment,and a large discontinuous equilibrium structure is formed on the grain boundary.The electrochemical corrosion resistance of 6082 aluminium alloy can be improved by the re-aging process of 220℃×40min and 220℃×60min.

译

关键词

6082铝合金; 显微组织; 回归再时效; 电化学腐蚀

译

Keywords

6082 Aluminum Alloy; Microstructures; Retrogression and Reaging; Electrochemical Corrosion

译

摘要

采用电化学方法研究了经不同回归再时效工艺处理的6082铝合金在3.5%的NaCl溶液中的腐蚀行为

通过显微组织、XRD和极化曲线分析发现

6082铝合金组织为α-Al基体上均匀分布且取向明显的β-Mg2Si颗粒及单质Si;回归处理后铝合金基体中几乎没有强化相

再时效晶内析出细小弥散的强化相

晶界上形成粗大断续状的平衡态组织。回归工艺为220℃×40min与220℃×60min时可以提高6082铝合金耐电化学腐蚀性能。

Abstract

The corrosion behavior of 6082 aluminum alloy after different retrogression reaging treatment in 3.5%NaCl solution was analyzed by electrochemical method

microstructural observation

XRD and polarization curves.The results show that the microstructure of 6082 aluminum alloy is composed of a uniform distribution of beta-Mg2 Si particles and elementary Si with obvious orientation on the matrix ofα-Al solid solution.After regression treatment

there are almost no strenghening phases in the aluminum alloy matrix

and then the fine diffuse strengthening phase is precipitated in the grain after reaging treatment

and a large discontinuous equilibrium structure is formed on the grain boundary.The electrochemical corrosion resistance of 6082 aluminium alloy can be improved by the re-aging process of 220℃×40min and 220℃×60min.