Er对多向锻造7050铝合金组织性能的影响

doi:10.13251/j.issn.0254-6051.2023.12.038

金属热处理 ›› 2023, Vol. 48 ›› Issue (12): 230-235.DOI: 10.13251/j.issn.0254-6051.2023.12.038

Er对多向锻造7050铝合金组织性能的影响

王华幸¹, 荣莉¹, 黄晖¹, 魏午¹, 王泽忠², 周力², 王猛³

1.北京工业大学材料与制造学部,北京 100124;
2.东风汽车集团股份有限公司, 湖北武汉 430056;
3.西安航天动力机械有限公司, 陕西西安 710025

收稿日期:2023-07-07 修回日期:2023-11-01 出版日期:2023-12-25 发布日期:2024-01-29
通讯作者: 黄晖,研究员,博士,E-mail:huanghui@bjut.edu.cn
作者简介:王华幸(1998—),男,硕士研究生,主要研究方向为轻合金制备及加工技术,E-mail:1340043374@qq.com。
基金资助:
国家重点研发计划(2021YFB3700901)

Effect of Er on microstructure and properties of multi-directional forged 7050 aluminum alloy

Wang Huaxing¹, Rong Li¹, Huang Hui¹, Wei Wu¹, Wang Zezhong², Zhou Li², Wang Meng³

1. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China;
2. Dongfeng Motor Group Co., Ltd., Wuhan Hubei 430056, China;
3. Xi'an Aerospace Power Machinery Co., Ltd., Xi'an Shaanxi 710025, China

Received:2023-07-07 Revised:2023-11-01 Online:2023-12-25 Published:2024-01-29

摘要/Abstract

摘要： 以7050铝合金及含Er7050铝合金(7E50)为研究对象,对两种铝合金自由锻件进行固溶、时效处理后,采用SEM、TEM与室温拉伸等测试手段研究铝合金锻件固溶及时效处理过程中组织和力学性能的演变规律。结果表明,两种合金经470 ℃×1 h固溶后,7050铝合金再结晶组织占比69.45%,而7E50合金再结晶占比仅为62.08%,Er元素的加入可以抑制合金的再结晶行为。最佳的单级时效工艺为120 ℃×24 h,经单级峰时效处理后7E50合金的强度、硬度、伸长率均高于7050合金,由此可见Er元素的加入可以有效提升合金的力学性能。7E50铝合金峰时效态下的析出相主要是η′相、GP区和Al₃(Er, Zr)颗粒。两种合金晶界上析出相都呈链状连续分布,但7E50铝合金晶界析出相尺寸明显小于不含Er的7050合金,这可能是7E50合金伸长率高于7050合金伸长率的原因之一。

关键词: 7E50铝合金, 多向锻造, 热处理, 组织, 力学性能

Abstract: 7050 aluminum alloy and Er-containing 7050 aluminum alloy (7E50) were selected as the research object. After solution and aging treatment of free forgings of both aluminum alloys, the microstructure and mechanical properties were studied by means of SEM, TEM and room temperature tensile test. The results show that after 470 ℃×1 h solution treatment, the recrystallized fraction in the 7050 aluminum alloy is 69.45%, while that in the 7E50 alloy is only 62.08%, which shows that the addition of Er can inhibit the recrystallization behavior of the alloy. After the optimal single-stage peak aging process, that is 120 ℃×24 h, the strength, hardness and elongation of the 7E50 alloy are higher than that of the 7050 alloy, it can be seen that the Er addition can effectively improve the mechanical properties of the alloy. The precipitated phases of the 7E50 aluminum alloy are mainly η′ phase, GP region and Al₃(Er ,Zr) particles. The grain boundary precipitated phases of the two alloys show a continuous chain distribution, but the size of grain boundary precipitated phases in the 7E50 alloy is significantly finer than that in the 7050 alloy, which may be one of the main reasons why the elongation of the 7E50 alloy is higher than that of the 7050 alloy.

Key words: 7E50 aluminum alloy, multi-directional forging, heat treatment, microstructure, mechanical properties

中图分类号:

TG146.2

王华幸, 荣莉, 黄晖, 魏午, 王泽忠, 周力, 王猛. Er对多向锻造7050铝合金组织性能的影响[J]. 金属热处理, 2023, 48(12): 230-235.

Wang Huaxing, Rong Li, Huang Hui, Wei Wu, Wang Zezhong, Zhou Li, Wang Meng. Effect of Er on microstructure and properties of multi-directional forged 7050 aluminum alloy[J]. Heat Treatment of Metals, 2023, 48(12): 230-235.

参考文献

[1]Heinz A, Haszler A, Keidel C, et al. Recent development in aluminum alloys for aerospace applications[J]. Materials Science and Engineering A, 2000, 280(1): 102-107.
[2]张允康, 许晓静, 罗勇, 等. Al-Zn-Mg-Cu系合金微合金化的研究现状与展望[J]. 热加工工艺, 2012, 41(6): 10-13.
Zhang Yunkang, Xu Xiaojing, Luo Yong, et al. Research status and prospect of micro-alloying of Al-Zn-Mg-Cu alloy[J]. Hot Working Technology, 2012, 41(6): 10-13.
[3]Li Z H, Xiong B Q, Zhang Y G, et al. Investigation on strength, toughness and microstructure of an Al-Zn-Mg-Cu alloy pre-stretched thick plates in various ageing tempers[J]. Journal of Materials Processing Technology, 2009, 209(4): 2021-2027.
[4]Deng Y, Yin Z M, Cong F G.Intermetallic phase evolution of 7050 aluminum alloy during homogenization[J]. Intermetallics, 2012, 26: 114-121.
[5]李海, 王芝秀, 郑子樵. 7050铝合金高温预析出处理[J]. 稀有金属材料与工程, 2008, 37(4): 674-677.
Li Hai, Wang Zhixiu, Zheng Ziqiao. High temperature pre-precipitation treatment of 7050 aluminum alloy[J]. Rare Metal Materials and Engineering, 2008, 37(4): 674-677.
[6]陈庚, 苗景国, 方琴, 等. 非等温时效工艺对7050铝合金组织和性能的影响[J]. 金属热处理, 2020, 45(3): 169-173.
Chen Geng, Miao Jingguo, Fang Qin, et al. Effect of non-isothermal aging process on microstructure and properties of 7050 aluminum alloy[J]. Heat Treatment of Metals, 2020, 45(3): 169-173.
[7]Zhu D Y, Zhen L, Hu W H, et al. Effect of strain on DRX of 7050 aluminum alloy during extrusion at high temperature[J]. Rare Metals, 2007(26): 338-341.
[8]孙燚, 李付国, 李志杰, 等. 7050-T7452高强铝合金的开坯与锻造工艺研究[J]. 锻压装备与制造技术, 2010, 45(6): 65-69.
Sun Yi, Li Fuguo, Li Zhijie, et al. Cogging and forging techniques for 7050-T7452 high-strength aluminum alloy[J]. China Metalforming Equipment and Manufacturing Technology, 2010, 45(6): 65-69.
[9]刘鹏辉, 郭鸿镇, 王涛, 等. 等温锻造温度对7050铝合金组织与性能的影响[J]. 热加工工艺, 2009, 38(1): 107-109.
Liu Penghui, Guo Hongzhen, Wang Tao, et al. Influence of isothermal forging temperature on microstructure and mechanical property of 7050 aluminum alloy[J]. Hot Working Technology, 2009, 38(1): 107-109.
[10]赵天生, 方羽, 孙誉宾. 成形速度对7050铝合金锻件力学性能和断口形貌的影响[J]. 金属热处理, 2022, 47(6): 103-106.
Zhao Tiansheng, Fang Yu, Sun Yubin. Effect of forming speed on mechanical properties and fracture morphology of 7050 aluminum alloy forgings[J]. Heat Treatment of Metals, 2022, 47(6): 103-106.
[11]王少华, 孟令刚, 杨守杰, 等. Al-Zn-Mg-Cu-Zr-0.5Er合金在铸态和均匀化条件下的组织[J]. 中国有色金属学报, 2011, 21(7): 1449-1454.
Wang Shaohua, Meng Linggang, Yang Shoujie, et al. Microstructure of Al-Zn-Mg-Cu-Zr-0.5Er alloy under as-cast and homogenization conditions[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(7): 1449-1454.
[12]朱鹏程, 姜丽军, 向康宁, 等. Al-8.0Zn-2.0Mg-2.1Cu合金均匀化过程中Al₂CuMg相的消除[J]. 金属热处理, 2020, 45(5): 40-44.
Zhu Pengcheng, Jiang Lijun, Xiang Kangning, et al. Elimination of Al₂CuMg phase during homogenization in Al-8.0Zn-2.0Mg-2.1Cu alloy[J]. Heat Treatment of Metals, 2020, 45(5): 40-44.
[13]任继嘉. 高强变形铝合金[J]. 轻合金加工技术, 1986, 14(2): 33-36.
[14]孙中国. 含Er 7xxx铝合金时效工艺研究[D]. 北京: 北京工业大学, 2014.
Sun Zhongguo. Study on ageing technology of 7xxx serious alloy containing Er[D]. Beijing: Beijing University of Technology, 2014.
[15]吴浩. Er、Zr复合微合金化 Al-Zn-Mg-Cu合金微观组织与性能的研究[D]. 北京: 北京工业大学, 2017.
Wu Hao. Study on the microstructure and properties of an Al-Zn-Mg-Cu alloy by multi-microalloying with Er and Zr[D]. Beijing: Beijing University of Technology, 2017.
[16]谢清真. 工业条件下7E49铝合金固溶时效工艺的研究[D]. 北京: 北京工业大学, 2016.
Xie Qingzhen. Study of 7E49 alloy solution and aging treatment in the industrial condition[D]. Beijing: Beijing University of Technology, 2016.

Er对多向锻造7050铝合金组织性能的影响

Effect of Er on microstructure and properties of multi-directional forged 7050 aluminum alloy

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	袁志钟, 王梦飞, 张伯承, 段旭斌, 李表敏, 杨海峰, 罗锐, 程晓农. 冷作模具钢SKD11的热处理增韧技术[J]. 金属热处理, 2023, 48(9): 1-7.
[2]	孙博, 聂佳民, 李晓丹, 何长树. 强制冷却和低温时效对2198-T3/7A04-T6异种铝合金FSW接头组织及性能的影响[J]. 金属热处理, 2023, 48(9): 8-13.
[3]	崔毅, 崔继红, 王艳, 张雲飞, 俞峰, 赵英利, 曹文全. 淬火工艺对GCr4Mo4V钢组织及耐磨性的影响[J]. 金属热处理, 2023, 48(9): 23-29.
[4]	王毅, 韩杰, 刘超, 邓玲蕊, 李辉, 许荣昌. DQ-T工艺对1000 MPa级高强钢组织和性能的影响[J]. 金属热处理, 2023, 48(9): 30-34.
[5]	曾勇谋, 刘莹, 刘梓源, 胡梦晗, 曹宇. 退火温度和冷变形量对动力电池壳用3003铝合金板组织和性能的影响[J]. 金属热处理, 2023, 48(9): 70-74.
[6]	明章生, 赵杰, 栗克建, 曹鹏军, 朱斌, 冯毅. 强烈淬火工艺制备超高强韧钢的应用展望[J]. 金属热处理, 2023, 48(9): 81-87.
[7]	毛福祥, 蒋邵龙, 刘伟, 束文武, 王林涛. 热处理工艺对气阀合金NCF3015组织和性能的影响[J]. 金属热处理, 2023, 48(9): 92-94.
[8]	韩伟松, 杜峰, 李建锋, 朱宝辉, 沈立华, 刘意, 王鹏. 变形量对Ti80G合金力学性能的影响[J]. 金属热处理, 2023, 48(9): 95-98.
[9]	杨赛玄, 杨晓斌, 陆盼盼, 赵倩, 董治中, 董纪. 1 T磁场下回火工艺对25CrMo48V钢耐蚀性能的影响[J]. 金属热处理, 2023, 48(9): 106-109.
[10]	宋操, 王晓东, 包喜荣, 陈林, 汤雪娇. Ce对30MnNbRE钢淬火回火微观组织和力学性能的影响[J]. 金属热处理, 2023, 48(9): 143-149.
[11]	李文刚, 炊鹏飞, 程尊鹏, 李春梅, 景然, 李江华, 廖仲尼. 硼含量对Ti-Zr-Nb-B合金显微组织及性能的影响[J]. 金属热处理, 2023, 48(9): 157-164.
[12]	戴钊, 郭智, 龙晓燕, 冯晓勇, 刘伟, 张福成, 李艳国. Si含量对高碳贝氏体钢微观组织与性能的影响[J]. 金属热处理, 2023, 48(9): 165-173.
[13]	谢尚恒, 孙有平, 朱嘉欣, 方德俊. 微量Zr对深冷轧制Al-Cu-Mg合金微观组织及性能的影响[J]. 金属热处理, 2023, 48(9): 174-179.
[14]	王英虎. 硫含量对Y12Cr18Ni9易切削钢中硫化物形态及性能的影响[J]. 金属热处理, 2023, 48(9): 183-190.
[15]	王芝林, 高星, 蒋波, 王磊英, 赵海东, 吴瀚. Mn-Cr-V-S贝氏体非调质钢连续冷却转变与组织调控[J]. 金属热处理, 2023, 48(9): 191-196.