文献类型：期刊文献

英文题名：The influence of heat treatment process on the dynamic recrystallization evolution mechanism of Inconel 718 during high-speed machining

作者：Zhang, Ping[1,2];Wang, Shunxiang[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：227

外文期刊名：VACUUM

收录：SCI-EXPANDED(收录号：WOS:001267705100001)、、EI(收录号：20242816659677)、Scopus(收录号：2-s2.0-85197655686)、WOS

基金：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 Guangdong Province (No.2023A1515030171) , Science and Technology Project of Zhanjiang City, Guangdong Province (No.2022A01004) , 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：Inconel 718 alloy; Aging heat treatment; Surface grain refinement; Cutting force; Cutting temperature

外文摘要：This study aims to investigate the cutting mechanisms of Inconel 718 alloy under different heat treatment processes and the grain refinement patterns of the transformed layer. By establishing a constitutive model suitable for cutting and importing it into DEFORM-3D for heat treatment processing and single-factor cutting experiment simulation, the effects of heat treatment processes and cutting parameters on cutting force, cutting temperature, and surface grain refinement were studied. The results indicate that the increase in cutting force is maximum, approximately 12 %, after the aging temperature is raised from 668 degrees C to 718 degrees C. The cutting force generated after aging heat treatment shows a negative correlation with cutting speed, whereas the cutting force after solution heat treatment rises significantly between 1400 and 1600 mm/s. The maximum cutting temperature occurs in workpieces after solution heat treatment, about 112 % of that of workpieces treated at 718 degrees C aging heat treatment. At the onset of cutting, the size relationship of the original grain volume is as follows: untreated < solution heat treatment < aging heat treatment; the number of nucleation points for dynamic recrystallization at grain boundaries is as follows: aging heat treatment < solution heat treatment < untreated. The most significant increase in the number of dynamic recrystallizations is observed after aging heat treatment at 621 degrees C, with the relationship of the number of recrystallizations in different cutting deformation zones being: secondary deformation zone < primary deformation zone < tertiary deformation zone. With the increase in cutting depth, the grain size of the workpiece after solution heat treatment first increases then decreases during the cutting process; the grain size of the workpiece after aging heat treatment first decreases then increases. The grain size of the workpiece during the cutting process after heat treatment is negatively correlated with cutting speed. Specifically, when the cutting speed is 600 mm/s, the grain size after solution heat treatment is the largest, about 1.1 times that of the 718 degrees C aging heat-treated workpiece.