标题：A simulation model for predicting surface integrity coupled thermal-mechanical effect in turning of Inconel 718 super alloy
作者：Ren, Xiaoping; Liu, Zhanqiang
作者机构：[Ren, Xiaoping; Liu, Zhanqiang] Shandong Univ, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China.; [Ren, Xiaoping; Liu, Zhanqiang] Shandong Uni 更多
通讯作者：Liu, ZQ;Liu, ZQ;Liu, Zhanqiang
通讯作者地址：[Liu, ZQ]Shandong Univ, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China;[Liu, ZQ]Shandong Univ, Minist Educ, Key Lab High Efficiency & Clean Me 更多
来源：INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
关键词：Residual stress; Microstructure; Thermal-mechanical loading; Inconel; 718; Turning
摘要：Residual stress as well as microstructure modification in machined surface layer directly influence fatigue performance of difficult-to-machine materials especially for nickel-based super alloy. However, the prediction of these factors still needs deeper study. In the paper, residual stress as well as microstructure modification in machined surface is predicted by a simulation model coupling thermal-mechanical effect. The predictions of FE model are validated by experimental measurements. Through numerical simulation results, the effects of thermal and mechanical loadings are distinguished. Besides, the influence of cutting parameters on the residual stress and microstructure was also obtained. Within the range of experimental parameters, the combination of larger cutting speed and lower feed rate is the recommended optimized selection of cutting parameters to obtain the better surface quality in turning Inconel 718.