• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (15): 311-332.doi: 10.3901/JME.2023.15.311

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Research Progress on Machinability Improvement of Difficult-to-machine Materials with Surface Modification Methods

WANG Hong1,2,3, WANG Bing1,2,3, LIU Zhanqiang1,2,3, ZHAO Jinfu1,2,3, SONG Qinghua1,2,3   

  1. 1. School of Mechanical Engineering, Shandong University, Jinan 250061;
    2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, Shandong University, Jinan 250061;
    3. National Demonstration Center for Experimental Mechanical Engineering, Shandong University, Jinan 250061
  • Received:2022-08-14 Revised:2023-03-02 Online:2023-08-05 Published:2023-09-27

Abstract: High quality and high efficiency machining are eternal targets pursued by the manufacturing field, and the machinability of workpiece material is the fundamental factor to determine the machining efficiency and quality. Through treatment on workpiece material with surface modification methods, the microstructure and thermophysical-mechanical properties of the removed layer can be directionally transformed. Then the machinability of the workpiece material can be expected to improve. Therefore, the surface modification assisted machining technology of difficult-to-machine materials has gradually attracted attention in recent years.The machinability characteristics of typical difficult-to-machine materials such as titanium alloy, superalloy, and high strength steel are summarized. Then the state of the art on the surface modification assisted machining on different workpiece materials is reviewed. The mechanism of modification treatment technologies such as energy field method, active medium coating method and alloying method on the surface layer of workpiece material is summarized. The effects of different surface modification on the machinability of treated materials are compared and commented. The existing problems of surface modification technology in improving the machinability of difficult-to-machine materials are clarified. Finally, the future research directions of high quality and high efficiency machining achieved by surface modification treatment are discussed and suggested.

Key words: difficult-to-machine materials, surface modification treatment, machinability, cutting deformation, machining quality

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