文献类型：期刊文献

英文题名：Effect of cutting parameters on the microstructure evolution and damage mechanism of 7075-T6 aluminum alloy in micro cutting

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

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, Yantai, Peoples R China

年份：2023

卷号：32

期号：7

起止页码：914

外文期刊名：INTERNATIONAL JOURNAL OF DAMAGE MECHANICS

收录：SCI-EXPANDED(收录号：WOS:000985975300001)、、EI(收录号：20232014092158)、Scopus(收录号：2-s2.0-85159049440)、WOS

基金：The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: 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：Micro cutting; microstructure evolution; crack propagation; residual stress; crystal plasticity theory

外文摘要：This work aims to explore how cutting parameters affect the microstructure evolution and damage mechanism of 7075-T6 aluminum alloy in micro cutting. The effect of cutting parameters on micro cutting force and surface morphology is examined through single-factor test. By building a 3D micro finite element model for micro cutting based on crystal plasticity theory, the effect of cutting parameters on residual stress, microstructure evolution and damage behavior is analyzed to establish a mapping relation between residual stress and damage. The results show that as cutting speed increases, main cutting force first reduces then increases in all cases, but the cutting speed at the inflection point corresponding to main cutting force is different. The micro cutting surface morphology of 7075-T6 aluminum alloy displays obvious signs of plowing; detectable oxidation adhesion wear appears when the cutting depth is greater than 150 mu m. Crack initiation and propagation on the machined surface of 7075-T6 aluminum alloy vary considerably under different cutting parameters. Residual stress distribution displays a ladle profile. The deeper the maximum residual compressive stress is from the surface, the harder it is for micro cracks to initiate and propagate. SEM and EDS analysis indicates that at smaller cutting depths, micro cutting tool wear is dominated by oxidation wear; at larger cutting depths, surface morphology is mostly better than at smaller cutting depths.