文献类型：期刊文献

英文题名：Influence of milling parameters on the microstructural evolution mechanism of 7075-T6 aluminum alloy

作者：Zhang, Ping[1,2];Zhang, Songting[1];Zhang, Jinlong[1];Sun, Yajie[1];Zhou, Hanping[1];Yue, Xiujie[2,3]

机构：[1]Guangdong Ocean Univ, Coll Mech & Power Engn, Zhanjiang, Peoples R China;[2]Qingdao Huanghai Univ, Coll Intelligent Mfg, Qingdao 266520, Peoples R China;[3]Qingdao Univ Technol, Coll Intelligent Mfg, Qingdao 266520, Peoples R China

年份：2024

卷号：222

外文期刊名：VACUUM

收录：SCI-EXPANDED(收录号：WOS:001214236800001)、、EI(收录号：20241015707756)、Scopus(收录号：2-s2.0-85186763433)、WOS

基金：The research presented in this study was made possible through the generous support of various funding sources. The authors gratefully acknowledge the following organizations for their contributions: National Natural Science Foundation of China (51705270) ; National Natural Science Foundation of China (No. 51575289) ; Natural Science Foundation of Guangdong Province (No. 2023A1515030171) ; Science and Technology Project of Zhanjiang City, Guangdong Province (No. 2022A01004) ; Natural Science Foundation of Shandong Province (No. ZR2016EEP03) ; Applied Basic Research Program of Qingdao City (No. 19-6-2-69-cg) ; Shandong Qingchuang Science and Technology Project (No. 2019KJB022) , Research start-up fund of Guangdong Ocean University.r Project (No. 2019KJB022) , Research start-up fund of Guangdong Ocean University.

语种：英文

外文关键词：7075-T6 aluminum alloy; Milling parameters; Dynamic recrystallization of grains; Grain growth

外文摘要：This study evaluates the influence of milling parameters on the milling process and microstructural changes in 7075-T6 aluminum alloy using experimental and simulation methods. Key findings include a direct correlation between milling parameters and higher chip temperatures, particularly influenced by milling speed which at its third level can cause temperature elevations up to 36(degrees)C, ordered by impact as ap > f > v.Increasing milling depth markedly affects grain recrystallization, especially near the tool's trailing face (P3), leading to a 45.8% reduction in dynamic recrystallization, whereas lower depths expedite this process. Additionally, grain size and number at the leading face (P1) are also depth -dependent, with larger grains diminishing in volume yet increasing in quantity as depth increases. Enhanced milling speeds up to 500 mm/min significantly refine grains to near 1 mu m at P1, with an 80.7% rise in recrystallization numbers, while at P3, grain size initially contracts then enlarges at 416 mm/min. Feed rate primarily impacts the quantity of recrystallized grains at the tool tip (P2), with a notable 60.4% increment and a swift transition from larger to smaller grains. Both P1 and P2 experience about a 20% reduction in grain growth due to feed rate, with more pronounced effects at P1 and the fragmentation of larger boundary grains into smaller, irregular shapes.