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PREPARATION OF Ti1-xAlxN COATING IN CUTTING TITANIUM ALLOY AND ITS CUTTING PERFORMANCE
Alternative TitlePREPARATION OF Ti_(1-x)Al_xN COATING IN CUTTING TITANIUM ALLOY AND ITS CUTTING PERFORMANCE
Sui Xudong1; Li Guojian1; Wang Qiang1; Qin Xuesi1; Zhou Xiangkui1; Wang Kai1; Zuo Lijian2
2016
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume52Issue:6Pages:741-746
AbstractHigh-strength lightweight titanium alloy structural materials have been widely used in aerospace and other industry. However, the titanium is hard to machine due to its characteristics of low thermal conductivity, high chemical affinity and low elastic modulus. Coating tools provide a solution to overcome the problem of cutting titanium alloy. Ti1-xAlxN coating is one of the most popular candidates in cutting titanium alloy. However, the cutting performance and wear mechanism of the sputtering Ti1-xAlxN coating should be studied further in order to meet the demands of cutting titanium alloy. In this work, Ti1-xAlxN coatings with different Al contents have been prepared by magnetron sputtering. Microstructure and mechanical properties of the coatings were examined by XRD, SEM, EDX and nanoindenter. Results show that the coatings is a single fcc structure with a (111) preferred orientation when x is in the range of 0.50 similar to 0.58 (atomic fraction). When the Al content is 0.63, the hexagonal AlN is formed in the coating and the hardness declines. In addition, the surface particle size of Ti1-xAlxN coatings increases and the coating density decreases with increasing the Al content. The results of titanium cutting experiment indicate that the tool wear is mainly adhesive wear and chipping. The cutting performances of Ti0.50Al0.50N coated tool is slightly better than uncoated tool and are much better than those of Ti0.42Al0.58 and Ti0.37Al0.63N coated tools at a lower cutting speed (65 m/min). The cutting performance of Ti0.50Al0.50N coated tool is the best at a higher cutting speed of 100 m/mM and is four times larger than that of uncoated tool. The excellent cutting performance of Ti0.50Al0.50N coating is mainly due to its high surface density and high hardness, which lead to the formation of regular and dense built-up edge during titanium cutting. Therefore, Ti0.50Al0.50N coating with a (111) preferred orientation, dense surface and relatively low Al content is recommended in high speed turning titanium.
KeywordTI-AL-N MECHANICAL-PROPERTIES CEMENTED CARBIDE VAPOR-DEPOSITION THIN-FILMS SI-N TIALN MICROSTRUCTURE WEAR INSERTS Ti1-xAlxN magnetron sputtering hard coating titanium cutting wear mechanism
Indexed ByCSCD
Language英语
Funding Project[National Science and Technology Major Project of China]
CSCD IDCSCD:5720183
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/146546
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Petrochina Daqing Petrochem Co Oil Refinery, Daqing 163714, Peoples R China
Recommended Citation
GB/T 7714
Sui Xudong,Li Guojian,Wang Qiang,et al. PREPARATION OF Ti1-xAlxN COATING IN CUTTING TITANIUM ALLOY AND ITS CUTTING PERFORMANCE[J]. ACTA METALLURGICA SINICA,2016,52(6):741-746.
APA Sui Xudong.,Li Guojian.,Wang Qiang.,Qin Xuesi.,Zhou Xiangkui.,...&Zuo Lijian.(2016).PREPARATION OF Ti1-xAlxN COATING IN CUTTING TITANIUM ALLOY AND ITS CUTTING PERFORMANCE.ACTA METALLURGICA SINICA,52(6),741-746.
MLA Sui Xudong,et al."PREPARATION OF Ti1-xAlxN COATING IN CUTTING TITANIUM ALLOY AND ITS CUTTING PERFORMANCE".ACTA METALLURGICA SINICA 52.6(2016):741-746.
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