Relationship of microstructure, mechanical properties and titanium cutting performance of TiAlN/TiAlSiN composite coated tool

被引：87

作者：

Sui, Xudong ^{[1
]}

Li, Guojian ^{[1
]}

Qin, Xuesi ^{[1
]}

Yu, Haidong ^{[1
]}

Zhou, Xiangkui ^{[1
]}

Wang, Kai ^{[1
]}

Wang, Qiang ^{[1
]}

机构：

[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Shenyang 110819, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 06期

关键词：

Nanocomposites; Coated carbide tool; Titanium cutting; Wear mechanism; N COATINGS; OXIDATION RESISTANCE; CARBIDE TOOLS; ALLOYS; NANOCOMPOSITE; DEPOSITION; BEHAVIOR; TI6AL4V; TIALN; SI;

D O I：

10.1016/j.ceramint.2016.01.159

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Research on the relationship of microstructure and properties of coated tools such as TiAlN and TiAlSiN plays a key role in obtaining the needed cutting performance in titanium machining. In this study, three kinds of coatings of TiAlN, TiAlSiN monolayer and TiAlN/TiAlSiN composite multilayer have been fabricated by magnetron sputtering method. It is found that the coating structure changes from columnar growth to nanocrystal growth by doping Si element. The TiAlN/TiAlSiN coating is composed by a coarse columnar TiAlN bottom layer and a fine nanocrystalline TiAlSiN top layer. Premature spalling problem (Lc2) is improved by forming the TiAlN/TiAlSiN multilayer structure. Titanium cutting experiment shows that the major wear mechanism of these coated tools is adhesive wear and chipping. The TiAlSiN coated tool has the longest cutting distance at various cutting speeds in these three kinds of coatings. This is because less built-up edge and chipping are generated at the cutting edge due to the dense nanocrystal structure, high hardness and good oxidation resistance of TiAlSiN coating. Therefore, the TiAlSiN coating with dense structure, high hardness and good oxidation resistance is recommended to use in high speed turning titanium. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：7524 / 7532

页数：9

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