STUDY ON HIGH-FREQUENCY FATIGUE PROPERTIES OF PVD TiCrAlN COATING OF CUTTING TOOL

WANG NingChang; LIU QingFeng; CHENG Xin; JIANG Feng; XU XiPeng

doi:10.16579/j.issn.1001.9669.2015.04.012

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STUDY ON HIGH-FREQUENCY FATIGUE PROPERTIES OF PVD TiCrAlN COATING OF CUTTING TOOL

更新时间：2022-09-22

- STUDY ON HIGH-FREQUENCY FATIGUE PROPERTIES OF PVD TiCrAlN COATING OF CUTTING TOOL
- Journal of Mechanical Strength Vol. 37, Issue 4, Pages: 628-633(2015)
- 作者机构：
  
  1. 华侨大学制造工程研究院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2015.04.012
  CLC：
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WANG NingChang, LIU QingFeng, CHENG Xin, et al. STUDY ON HIGH-FREQUENCY FATIGUE PROPERTIES OF PVD TiCrAlN COATING OF CUTTING TOOL. [J]. 37(4):628-633(2015)
DOI：

WANG NingChang, LIU QingFeng, CHENG Xin, et al. STUDY ON HIGH-FREQUENCY FATIGUE PROPERTIES OF PVD TiCrAlN COATING OF CUTTING TOOL. [J]. 37(4):628-633(2015) DOI： 10.16579/j.issn.1001.9669.2015.04.012.

摘要

通过超声辅助振动的方式,用金刚石压头对PVD TiCrAlN涂层进行不同振幅下的高频冲击试验。采用扫描电子显微镜(SEM)和3D轮廓仪等对冲击后涂层的表面破坏形式和压痕形状进行检测,得出TiCrAlN涂层的抗冲击能力,分析了涂层冲击失效机理。结果表明:TiCrAlN涂层在受到冲击时产生侧向裂纹等失效形式;涂层在冲击载荷下受到的最大拉应力靠近冲击中心接触区边界;TiCrAlN涂层在高频冲击载荷作用下容易发生破坏,但是没有发生剥落,原因可能是:TiCrAlN涂层与基体界面处的结合力较好,涂层与基体界面的结合力影响了刀具涂层的抗冲击强度。

Abstract

Based on ultrasonic vibration-assisted mode,high-frequency impacting tests with diamond indenter at different amplitudes on TiCrAlN coating of cutting tool are carried out. The microstructure and morphology are obtained by scanning electron microscopy（ SEM） and 3D profiler. The failure mechanism of coating under impacting is analyzed. The high frequency fatigue property of the coating is analyzed. The results show that: lateral crack could be seen under impacting test; the maximum tensile stress occurs close the edge of the contact zone of impact center; TiCrAlN coating is easy to emerge the fatigue damage under the high-frequency impact loading,and the adhesion strength of the coating and substrate interface affects the impact fatigue strength of cutting tool coating.

关键词

涂层结合力高频冲击疲劳失效

Keywords

CoatingAdhesion strengthHigh frequency impactFatigue failure

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