Experimental investigation for ultra-precision cutting of nickel based superalloy with the assistance of magnetic field  

作　　者：XIAO JunFeng GUO Feng ZHANG Chen CHEN Xiao ZHANG JianGuo XU JianFeng 

机构地区：[1]State Key Laboratory of Digital Manufacturing Equipment and Technology,School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China

出　　处：《Science China(Technological Sciences)》2022年第9期2170-2177,共8页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51705172 and 51905194);the Fundamental Research Funds for the Central Universities(Grant No.2020kfy XJJS085)。

摘　　要：Nickel based superalloy is an important material because of its excellent properties under high temperatures.However,it is a difficult-to-machine material due to its low thermal conductivity,which can cause undesired localized high temperatures in the processing area.In this study,magnetic field-assisted end face turning experiments of nickel-based superalloy is carried out under the assistance of external magnetic fields of different strengths formed by permanent magnets.The experiment results show that,compared with ordinary machining,the chip morphology is improved,the oscillation of cutting force F_(c),F_(a),and Ffare significantly reduced by 90%,88%,and 78%,and the surface roughness Ra is improved from 23 to 13 nm,the P-V value of the fan-shaped area of the machined surface is reduced,and hardness and ductility are improved after the magnetic field is applied.The experiment results indicate that the application of a magnetic field is an efficient and convenient approach to improve the cutting performance of nickel based superalloy.

关 键 词：magnetic field assisted cutting nickel based superalloy ultra-precision cutting 

分 类 号：TG132.3[一般工业技术—材料科学与工程] TG506[金属学及工艺—合金]