表面机械滚压处理对2024铝合金表面粗糙度及性能的影响

doi:10.13251/j.issn.0254-6051.2025.04.044

金属热处理 ›› 2025, Vol. 50 ›› Issue (4): 282-289.DOI: 10.13251/j.issn.0254-6051.2025.04.044

表面机械滚压处理对2024铝合金表面粗糙度及性能的影响

王强¹, 吕心如¹, 孙志豪¹, 李静², 王洪涛¹

1.山东理工大学机械工程学院, 山东淄博 255022;
2.陆军装甲兵学院再制造工程研究中心, 北京 100072

收稿日期:2024-11-18 修回日期:2025-02-21 发布日期:2025-06-13
通讯作者: 王洪涛,副教授,博士,E-mail: htwang@sdut.edu.cn
作者简介:王强(1999—),男,硕士研究生,主要研究方向为表面滚压处理对材料微观组织和力学性能的影响,E-mail:1819942146@qq.com。
基金资助:
山东省自然科学基金(ZR2021ME136);国家自然科学基金青年科学基金(52205242)

Influence of surface mechanical rolling treatment on surface roughness and properties of 2024 aluminum alloy

Wang Qiang¹, Lü Xinru¹, Sun Zhihao¹, Li Jing², Wang Hongtao¹

1. School of Mechanical Engineering, Shandong University of Technology, Zibo Shandong 255022, China;
2. National Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, China

Received:2024-11-18 Revised:2025-02-21 Published:2025-06-13

摘要/Abstract

摘要： 对退火态2024铝合金进行不同加载方式(应力控制和应变控制)和加工道次的表面机械滚压处理(SMRT),研究表面机械滚压处理对其表面粗糙度及性能的影响。结果表明:经表面机械滚压处理后,随着滚压道次的增加,试样表面粗糙度先降低再升高;试样内部形成了硬度梯度结构,随距表面距离的增加,显微硬度呈递减趋势,试样强度提升,塑性略有下降,疲劳寿命大幅提升。经应力控制滚压处理5道次后,2024铝合金试样的综合性能最优,表面粗糙度最低为0.280 μm,硬化层深度达600 μm,屈服强度增强至213 MPa,抗拉强度提升至353 MPa,平均疲劳寿命是退火态的2倍,由8.7万次提升至17.4万次。

关键词: 2024铝合金, 表面机械滚压处理, 表面粗糙度, 拉伸性能, 硬度, 疲劳寿命

Abstract: Surface mechanical rolling treatment (SMRT) with different loading methods (stress control and strain control) and processing passes was carried out on the annealed 2024 aluminum alloy to study the influence of SMRT on surface roughness and properties. The results show that after SMRT, with the increase of rolling pass, the surface roughness of the specimen first decreases and then increases, a hardness gradient structure is formed inside the specimens, as the distance from the surface increases, the microhardness shows a decreasing trend, and the strength of the specimen is improved, the plasticity decreases slightly, and the fatigue life is significantly enhanced. After stress-control rolled for 5 passes, the comprehensive performance of the 2024 aluminum alloy is the best, with minimum surface roughness of 0.280 μm, hardened layer depth of 600 μm, yield strength of 213 MPa, and tensile strength of 353 MPa. The average fatigue life is twice than that of annealed state, which is increased from 87 000 cycles to 174 000 cycles.

Key words: 2024 aluminum alloy, surface mechanical rolling treatment, surface roughness, tensile properties, hardness, fatigue life

中图分类号:

TG306

王强, 吕心如, 孙志豪, 李静, 王洪涛. 表面机械滚压处理对2024铝合金表面粗糙度及性能的影响[J]. 金属热处理, 2025, 50(4): 282-289.

Wang Qiang, Lü Xinru, Sun Zhihao, Li Jing, Wang Hongtao. Influence of surface mechanical rolling treatment on surface roughness and properties of 2024 aluminum alloy[J]. Heat Treatment of Metals, 2025, 50(4): 282-289.

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表面机械滚压处理对2024铝合金表面粗糙度及性能的影响

Influence of surface mechanical rolling treatment on surface roughness and properties of 2024 aluminum alloy

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