Effects of Al content in TiAlN coatings on tool wear and cutting temperature during dry machining IN718. (July 2022)

• Record Type: Journal Article
• Authors: Zhao, Jinfu; Liu, Zhanqiang; Wang, Bing; Song, Qinghua; Ren, Xiaoping; Wan, Yi
• Is Part Of: Tribology international. Volume 171(2022)
• Publication Date: 2022-07
• Subjects: Al content -- IN718 -- Wear behavior -- Cutting temperature; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2022.107540
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: Cutting temperature affects TiAlN tool wear behaviors during machining IN718. However, the effects of Al content on wear behavior and cutting temperature are not clear. In this research, the Ti0.55 Al0.45 N and Ti0.41 Al0.59 N tools with the sole variable of Al contents were selected in dry cutting IN718 compared that with uncoated tools. The effects of Al content on TiAlN coating antifriction and thermal barrier effects were mutually analyzed. The tool tribological behaviors were characterized in tool wear initial and terminal stages, respectively. The Ti0.41 Al0.59 N tools exhibited better antifriction, smaller thermal barrier effect and longer tool life than that uncoated and Ti0.55 Al0.45 N tool did. The research results could guide for the reasonable selection of TiAlN tools in high-speed dry machining IN 718. Highlights: PVD TiAlN tools with sole variable of Al contents were analyzed. Coating thermal barrier effect related to Al content was illustrated. Tribological behaviors in tool wear initial and terminal stages were characterized. Coated Ti0.41 Al0.59 N improved cutting temperature and tool life with IN 718.