Excellent high-temperature strength and ductility of graphene oxide reinforced high-temperature titanium alloy matrix composite fabricated by hot isostatic pressing and heat treatment. (February 2022)

• Record Type: Journal Article
• Authors: Chen, Hang; Mi, Guangbao; Li, Peijie; Cao, Chunxiao
• Is Part Of: Composites communications. Volume 30(2022)
• Publication Date: 2022-02
• Subjects: High-temperature titanium alloy -- Graphene oxide -- Mechanical property -- Heat treatment
• DOI: 10.1016/j.coco.2022.101077
• Languages: English
• ISSNs: 2452-2139

Abstract

Abstract: GO reinforced high-temperature titanium alloy matrix composite with excellent high-temperature strength and ductility was successfully fabricated by hot isostatic pressing and heat treatment. After solution and aging treatment, the high-temperature strength of the composite was significantly improved because the increase of in-situ TiC at the interface enhanced interface bonding and the microstructure changed from equiaxed structure to bimodal structure. At the same time, the dissolution of silicides increased the high-temperature ductility. After solution at 1075 °C and aging at 700 °C, the tensile strength, yield strength and elongation at 600 °C of the high-temperature titanium alloy with 0.3 wt% GO reached 749 MPa, 571 MPa and 18.5%, respectively. Graphical abstract: Image 1 Highlights: GO reinforced titanium matrix composite with excellent high-temperature strength and ductility was fabricated by HIP and heat treatment. The main reason for the significant improvement of high-temperature strength was the in-situ TiC enhanced interface bonding. The dissolution of silicides after solution and aging treatment improved the high-temperature ductility.