Enhanced strength and wear resistance of a titanium-oxygen alloy with core-shell network structure. (July 2017)

• Record Type: Journal Article
• Authors: Zhang, Y.S.; Han, Z.; Wang, X.; Zhang, W.; Huo, W.T.
• Is Part Of: Tribology international. Volume 111(2017)
• Page Start: 192
• Page End: 196
• Publication Date: 2017-07
• Subjects: Transfer -- Abrasive -- Adhesive -- Wear; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2017.03.013
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: An enhanced sliding wear resistance of a novel core-shell Ti-O (CS-TiO) structured alloy combined with superior compressive properties relative to a commercial pure Ti (CP-Ti) compact is reported. The wear volume, area fraction of transfer layer in the contact zone and O content on the worn scars ( O at% ) were determined under various conditions. For CS-TiO, the prominent enhancement in wear resistance by more than 2 times is related to the increased O at% and improved yield strength, from 420 MPa in CP-Ti to 1210 MPa, which can effectively prevent it from experiencing serious adhesion and plastic deformation respectively. The study opens a new sight for microstructural design of anti-wear Ti alloys and composites: promoting tribo-oxidation reaction as well as improving strength. Highlights: A novel core-shell network structural Ti-O alloy has been fabricated successfully. Improved compressive properties and wear resistance have been achieved. Wear resistance is related to enhanced O content on worn scars and strength.