文献类型：期刊文献

英文题名：Effect of Heat Treatment Process on the Surface Integrity of 7A04 Aluminum Alloy

作者：Zhang, Ping[1,2];Gao, Yeran[1];Yue, Xiujie[2];Liu, Zehua[1];Zhang, Songting[1];Wang, Shunxiang[1];Lin, Zhenyong[1]

机构：[1]Guangdong Ocean Univ, Coll Mech & Power Engn, Zhanjiang, Peoples R China;[2]Qingdao Huanghai Univ, Coll Intelligent Mfg, Qingdao 266520, Guangdong, Peoples R China

年份：2023

卷号：75

期号：12

起止页码：5953

外文期刊名：JOM

收录：SCI-EXPANDED(收录号：WOS:001193953400090)、、EI(收录号：20234014843677)、Scopus(收录号：2-s2.0-85173083475)、WOS

基金：All authors declare that we have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The work was supported by the National Natural Science Foundation of China (51705270), the National Natural Science Foundation of China (No. 51575289), the Natural Science Foundation of Shandong Province (No. ZR2016EEP03), the Applied Basic Research Program of Qingdao city (No. 19-6-2-69-cg) and Shandong Qingchuang Science and Technology Project (No. 2019KJB022).

语种：英文

外文关键词：Aluminum alloys - Compressive stress - Cutting - Heat treatment - Residual stresses - Surface roughness - Surface stress

外文摘要：This study aims to investigate the impact of heat treatment processes on the machinability of 7A04 aluminum alloy. The heat-treated samples underwent high-speed cutting tests to analyze the influence of cutting speed on three-dimensional cutting forces, surface roughness, work hardening, and residual stress of the alloy. The findings indicate that cutting forces, surface roughness, and work hardening exhibit similar trends with increasing cutting speed. As the cutting speed rises, the cutting forces, surface roughness, work hardening, and depth of the work-hardened layer also increase. When considering the same cutting speed, an increase in solution temperature initially leads to an increase in cutting forces followed by a reduction. Additionally, the machined surface roughness gradually decreases, while work hardening first increases and then decreases. Residual stress on the machined surface varies with different heat treatment processes and resembles a ladle shape. Higher cutting speeds result in greater surface residual compressive stress and depth of the residual compressive stress layer. When comparing the same cutting speed, the combination of solution treatment at 490 degrees C for 20 min and solution treatment at 480 degrees C for 20 min yields higher surface residual compressive stress and greater depth of the residual compressive stress layer than the combination of solution treatment at 480 degrees C for 20 min. Thus, 7A04 aluminum alloy demonstrates satisfactory machinability at a cutting speed of 1550 m/mm when subjected to solution treatment at 490 degrees C for 20 min.