新能源汽车用电池托盘铝合金型材的力学性能与耐蚀性

doi:10.13251/j.issn.0254-6051.2025.08.011

金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 63-70.DOI: 10.13251/j.issn.0254-6051.2025.08.011

新能源汽车用电池托盘铝合金型材的力学性能与耐蚀性

张兵^1,2, 赵鸿金¹, 胡玉军^1,2, 叶俊峰¹, 梁小霞³, 旷军平⁴

1.江西理工大学材料科学与工程学院, 江西赣州 341000;
2.江西师范高等专科学校铜业制造学院, 江西鹰潭 335000;
3.广东高登铝业有限公司, 广东肇庆 526000;
4.江西广信新材料股份有限公司, 江西鹰潭 335000

收稿日期:2025-03-11 修回日期:2025-06-22 出版日期:2025-08-25 发布日期:2025-09-10
通讯作者: 赵鸿金,教授,博士,E-mail:zhj_zyh@163.com
作者简介:张兵(1989—),男,博士研究生,主要研究方向为金属材料组织性能调控,E-mail:zb1118cxl@163.com。
基金资助:
广东省肇庆市西江创新创业团队与领军人才类项目(2022RD09);国家自然科学基金(51961013);江西省教育厅科学技术研究项目(GJJ2409605)

Mechanical properties and corrosion resistance of aluminum alloy profiles for battery pallet used in new energy vehicles

Zhang Bing^1,2, Zhao Hongjin¹, Hu Yujun^1,2, Ye Junfeng¹, Liang Xiaoxia³, Kuang Junping⁴

1. School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou Jiangxi 341000, China;
2. School of Copper Manufacturing, Jiangxi Teachers College, Yingtan Jiangxi 335000, China;
3. Guangdong Golden Aluminum Co., Ltd., Zhaoqing Guangdong 526000, China;
4. Jiangxi Guangxin New Materials Co., Ltd., Yingtan Jiangxi 335000, China

Received:2025-03-11 Revised:2025-06-22 Online:2025-08-25 Published:2025-09-10

摘要/Abstract

摘要： 采用半连续铸造和热挤压法制备了6061铝合金电池托盘型材,采用JMatPro计算了6061铝合金的平衡相组成,结合光学显微镜、扫描电镜、能谱分析、拉伸试验及腐蚀试验,分析了合金化学成分和热处理工艺对铝合金型材力学性能与耐蚀性的影响。结果表明,6061合金组织中的粗大第二相聚集对塑性有不利影响,利用JMatPro计算分析发现合金成分中高Fe低Mn,会形成微米级β-AlFeSi相,也对合金塑性有不利影响。6061铝合金采用570 ℃×12 h的均匀化处理能改善难溶第二相尺寸及分布,由其拉伸试验及抗剥落腐蚀、晶间腐蚀、中性盐雾腐蚀和抗应力腐蚀性能测试结果可知,经均匀化处理的6061合金的力学性能和耐蚀性可达到客户要求。

关键词: 6061铝合金, JMatPro, 第二相, 力学性能, 耐蚀性

Abstract: 6061 aluminum alloy profiles for battery pallet in new energy vehicles were prepared by semi-continuous casting and hot extrusion. The equilibrium phase composition of the 6061 aluminum alloy were calculated by JMatPro. Effect of chemical composition and heat treat process on the mechanical properties and corrosion resistance of aluminum alloy profiles were analyzed by means of OM, SEM, EDS, tensile test and corrosion test. The results show that the coarse second phase aggregation in the microstructure of the alloy has an bad effect on plasticity. Using JMatPro calculation analysis, it is found that in the alloy with high Fe and low Mn, the micro scale β-AlFeSi phases are formed, which also has an bad effect on the plasticity of the alloy. The homogenizing of 570 ℃×12 h can improve the size and distribution of the insoluble second phases in the alloy. According to the tensile properties and test results of its resistance to spitting corrosion, intergranular corrosion, neutral salt spray corrosion and stress corrosion, the mechanical properties and corrosion resistance of the homogenized alloy can meet customer requirements.

Key words: 6061 aluminum alloy, JMatPro, second phase, mechanical properties, corrosion resistance

中图分类号:

TG146.21

张兵, 赵鸿金, 胡玉军, 叶俊峰, 梁小霞, 旷军平. 新能源汽车用电池托盘铝合金型材的力学性能与耐蚀性[J]. 金属热处理, 2025, 50(8): 63-70.

Zhang Bing, Zhao Hongjin, Hu Yujun, Ye Junfeng, Liang Xiaoxia, Kuang Junping. Mechanical properties and corrosion resistance of aluminum alloy profiles for battery pallet used in new energy vehicles[J]. Heat Treatment of Metals, 2025, 50(8): 63-70.

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新能源汽车用电池托盘铝合金型材的力学性能与耐蚀性

Mechanical properties and corrosion resistance of aluminum alloy profiles for battery pallet used in new energy vehicles

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