Fatigue fracture properties of mono-and multilayer PVD coatings for cutting tools in the impact testings
A broad growing market of coated cutting tool has been developed,and the hard coatings for cutting tools were driven by the demand on machining productivity,environmental mandates,and increased usage of new difficult-to-cut materials.A number of studies have been carried out to investigate the conventional(quasi-static,room temperature)mechanical properties of coatings.However,the complex multi-factorial phenomena occurred during cutting,such as the fatigue impact on the coated tools during the milling.Thus,the conventional testings could not mimic the entire diversity of all these processes.In this paper,the developed fatigue impact tester was used to simulate a closer experimental of real contact condition during cutting.A monolayer TiAlSiN coating and a multilayer TiAlSiN nano-coating of the same thickness deposited on ISO P30 cemented carbide.The fatigue impact tests were performed on these two coatings.The fatigue fracture processes of coatings in the impact tests were analyzed.It could be inferred that the multilayer TiAlSiN nano-coating exhibited a higher impact resistance under the impact load.The results were of great significance to optimize the mechanical properties of coated cutting tools under severe conditions during cutting.
Fatigue Coated tools Impact resistance Cutting process
Zha Xuming Jiang Feng Xu Xipeng
Institute of Manufacturing Engineering,Huaqiao University,Xiamen 361021,China;Engineering Research Center for Machining of Brittle Materials of Ministry of Education,Huaqiao University,Xiamen 361021,China
国际会议
第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))
深圳
英文
1-6
2017-11-23（万方平台首次上网日期，不代表论文的发表时间）