文献类型：期刊文献

英文题名：Corrosion mechanism and machinability of 7075-T6 aluminum alloy in high-speed cutting: With and without cryogenic treatment

作者：Zhang, Ping[1,2,4];Wang, Shunxiang[1];Lin, Zhenyong[1];Liu, Zehua[1,2];Liu, Junling[3];Mai, Qingqun[1];Yue, Xiujie[5]

机构：[1]Guangdong Ocean Univ, Coll Mech & Power Engn, Zhanjiang, Peoples R China;[2]Qingdao Huanghai Univ, Coll Intelligent Mfg, Qingdao, Peoples R China;[3]Yantai Univ, Coll Intelligent Mfg, Qingdao, Peoples R China;[4]Guangdong Ocean Univ, Qingdao Huanghai Univ, 1 Haida Rd, Zhanjiang 524088, Peoples R China;[5]Qingdao Huanghai Univ, Qingdao 266033, Peoples R China

年份：2023

卷号：74

期号：6

起止页码：872

外文期刊名：MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION

收录：SCI-EXPANDED(收录号：WOS:000930861900001)、、EI(收录号：20230813614398)、Scopus(收录号：2-s2.0-85148369503)、WOS

基金：ACKNOWLEDGMENTS 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：7075-T6 aluminum alloy; corrosion resistance; cryogenic treatment; curface quality; cutting force

外文摘要：This work aims to explore the effect of cutting parameters on the cutting force, surface quality, and corrosion resistance of 7075-T6 aluminum alloy after and without cryogenic treatment. Cryogenically treated (T6-C) and noncryogenically treated (T6) 7075-T6 aluminum alloy samples are experimentally cut and electrochemically corroded in a 3.5% NaCl solution. SEM, EDS, and electrochemical analysis are carried out to examine how cutting parameters affect the cutting force, surface quality, and corrosion resistance of cryogenically treated 7075-T6 aluminum alloy. The results show that after cryogenic treatment, under different cutting speeds, the cutting force is up to 39.8% smaller than without cryogenic treatment; under different cutting depths and feed rates, the cutting force is up to 136% and 21.54% smaller, respectively. Cryogenic treatment dramatically reduces the cutting force in the cutting process. As cutting speed increases, machined surface quality becomes better; fewer corrosion products and cracks are induced. When the cutting depth is 1.5 mm, there are fewer plows and micro-cracks on the machined surface than under other parameters, but cutting depth does not affect corrosion morphology significantly. The size of corrosion products is up to 55 mu m smaller. The electrochemical analysis finds that at the cutting speed of 1500 m/min, after cryogenic treatment, the current density is 59.4% smaller than without cryogenic treatment; polarization resistance is 1.68 x 10(5)omega center dot cm(2) larger. At the cutting depth of 1.5 mm, after cryogenic treatment, the current density is 66.16% smaller; self-corrosion potential shifts 0.19 V toward the positive pole. At the feed rate of 0.06 mm/z, after cryogenic treatment, self-corrosion potential shifts 0.18 V toward the positive pole; polarization resistance is 10.7% larger. These parameters correspond to the best corrosion resistance.