非等温回归再时效对7050铝合金组织与力学性能的影响

材料导报

2019, Vol. 33

Issue (Z2): 394-397

金属与金属基复合材料

非等温回归再时效对7050铝合金组织与力学性能的影响

吴懿萍¹, 何臻毅¹, 周志纲¹, 熊汉青¹, 贾寓真², 李承波³, 李国锋¹

1 长沙学院机电工程学院,长沙 410022;
2 湖南泰嘉新材料科技股份有限公司,长沙 410200;
3 中南大学材料科学与工程学院,长沙 410200

Effect of Non-isothermal Retrogression and Re-ageing Treatments on theMicrostructure and Mechanical Properties of 7050 Alloy

WU Yiping¹, HE Zhenyi¹, ZHOU Zhigang¹, XIONG Hanqing¹, JIA Yuzhen², LI Chengbo³, LI Guofeng¹

1 Department of Mechanical and Electrical Engineering, Changsha University, Changsha 410022;
2 Bichamp Cutting Technology (Hunan) Co., Ltd., Changsha 410200;
3 School of Materials Science and Engineering, Central South University, Changsha 410200

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摘要采用扫描电镜(SEM)、透射电镜(TEM)、硬度测试和拉伸测试研究了非等温回归再时效对7050合金组织和力学性能的影响。非等温回归处理的加热速率为5 ℃/min,回归终了温度包括160 ℃、190 ℃、220 ℃、260 ℃和 300 ℃。结果表明:经120 ℃/24 h+RT5 ℃/min190 ℃+120 ℃/24 h的非等温回归再时效处理后,合金的力学性能最佳,其抗拉强度约为588 MPa,屈服强度约为558 MPa,延伸率约为23%,硬度值约为199HV。预时效态合金晶界平衡相η呈不连续分布,其尺寸约为49～70 nm,晶内析出相η′的平均尺寸约为5～6 nm;在190 ℃的非等温回归处理过程中,预时效态合金中的析出相发生了部分回溶,相的平均尺寸变小,其晶界相和晶内相的尺寸分别约为5～10 nm和3～6 nm,回归态合金晶界呈多列平行且无沉淀析出带(PFZ)不明显;再时效态合金的晶界相尺寸最大,约为91～108 nm,晶内相弥散,尺寸约为4～10 nm,无沉淀析出带变得明显,其宽度约为41 nm。

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	吴懿萍
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	贾寓真
	李承波
	李国锋

关键词: 7050铝合金非等温回归组织力学性能

Abstract: The effects of “non-isothermal retrogression and re-ageing” treatments on the microstructure and mechanical properties of a 7050 alloy were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), hardness test and tensile test. During the non-isothermal retrogression process with a heating rate of 5 ℃/min, five terminal temperatures of 160 ℃, 190 ℃, 220 ℃, 260 ℃ and 300 ℃ were selected. The results show that after the non-isothermal retrogression and re-ageing treatment of 120 ℃/24 h+RT5 ℃/min190 ℃+120 ℃/24 h, the alloy presents the best mechanical properties with the ultimate tensile strength of 588 MPa, yield tensile strength of 558 MPa and ductility of 23%, respectively; the hardness is 199HV. In the pre-aged alloy, the equilbrium η phases along the grain boundaries are discontinuously located with an average size of 49—70 nm, and the η′ phases in the grains have an average size of 5—6 nm. During the retrogression with the continuous temperature increasing to 190 ℃, the pre-precipitated phases are partly dissolved and the sizes are smaller: the grain boundary η phases have an average size of 5—10 nm, and the phases within the grains have an average size of 3—6 nm. The retrogression alloy has multiple and parallel grain boundaries with unobvious PFZ. The re-aged alloy has the biggest phases in an average size of 91—108 nm along grain boundaries and diffuse phases inside grains in an average size of 4—10 nm, and its PFZ becomes clear with a width of 41 nm.

Key words: 7050 aluminum alloy non-isothermal retrogression microstructure mechanical properties

出版日期: 2019-11-25 发布日期: 2019-11-25

ZTFLH:

TG166.3

基金资助: 长沙市科技计划项目(K1705055);湖南省教育厅科学研究重点项目(17A019)

通讯作者: lgf1008@cssu.cn

作者简介: 吴懿萍,长沙学院讲师。2004年9月至2015年12月,在中南大学获得材料科学与工程的学士、硕士和博士学位。以第一作者在国内外学术期刊上发表论文10余篇,申请国家发明专利1项。研究工作主要围绕国家重点发展的轻金属材料,开展关于先进加工工艺以及组织性能控制的基础理论和应用研究。
李国锋,长沙学院教授。1983年毕业于中南大学,先后在中南大学、长沙中意电器集团、长沙学院工作。其团队主要研究方向为铝合金材料制备与强韧化技术、材料成型工艺。参与国家重点基础研究发展规划项目2项,主持省级项目4项、长沙市科技计划项目3项;发表论文30余篇,主持开发新产品20多项,授权专利3项,获省部级科技进步奖1项,湖南省教学成果奖3项。

引用本文:

吴懿萍, 何臻毅, 周志纲, 熊汉青, 贾寓真, 李承波, 李国锋. 非等温回归再时效对7050铝合金组织与力学性能的影响[J]. 材料导报, 2019, 33(Z2): 394-397.
WU Yiping, HE Zhenyi, ZHOU Zhigang, XIONG Hanqing, JIA Yuzhen, LI Chengbo, LI Guofeng. Effect of Non-isothermal Retrogression and Re-ageing Treatments on theMicrostructure and Mechanical Properties of 7050 Alloy. Materials Reports, 2019, 33(Z2): 394-397.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/IZ2/394

1 刘兵,彭超群,王日初,等.中国有色金属学报,2010,20(9),1705.
2 张新明,刘胜胆.中国材料进展,2013,32(1),39.
3 王伟,张勇,余敏,等.材料导报,2018,31(S1),415.
4 燕云程,黄蓓,李维俊,等.材料导报,2018,32(S2),358.
5 贾科,潘清林.热加工工艺,2012,41(22),194.
6 陈一进,江长友,秦克斌,等.金属热处理,2017(6),133.
7 Jiang J T, Xiao W Q, Yang L, et al. Materials Science & Engineering A,2014,605,167.
8 王春华,张涛,尹红霞,等.金属热处理,2017,42(9),87.
9 李国锋,张新明,李鹏辉,等.工程科学学报,2009,31(10),1286.
10 Cina B. U.S. patent, Ed 3856584,1974.
11 Liu D, Xiong B, Bian F, et al. Materials & Design,2014,56(4),1020.
12 谷亦杰,林建国,张永刚,等.金属热处理,2001(1),31.
13 Wang Y L, Pan Q L, Wei L L, et al. Materials & Design,2014,55(6),857.
14 冯迪,张新明,陈洪美,等.金属学报,2018,(1),100.
15 冯迪,张新明,刘胜胆.中国有色金属学报,2015,(11),3000.
16 冯迪,张新明,刘胜胆,等.中国有色金属学报,2013(5),1173.
17 冯迪,张新明,邓运来,等.中国有色金属学报,2014(5),1141.
18 Sha G, Cerezo A. Acta Materialia,2004,52(15),4503.
19 Gazda A, Warmuzek M, Wierzchowski W. Thermochimica Acta,1997,303(2),197.
20 罗伟,邓运来,房星,等.热加工工艺,2015(2),215.
21 李国锋,张新明,李鹏辉.稀有金属材料与工程,2011,40(7),1295.
22 李海,郑子樵,王芝秀.稀有金属材料与工程,2005,34(8),1230.
23 李海,郑子樵,王芝秀.稀有金属材料与工程,2005,34(7),1029.
24 叶凌英,吴懿萍,贾寓真,等.中国有色金属学报,2014,24(3),624.

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