Preparation and Mechanical Properties of Ceramic Fiber Reinforced Titanium-Based Hybrid Laminated Composite

Bing Zhao,V. Vijayan,Haitao Qu,Shuxia Li,Hongtao Zhang,Hongliang Hou,Guoqing Zhang,Zhigang Wang,Yunlong Zhang

doi:10.1155/2022/8906135

Abstract

Based on traditional titanium-based composites and the design concept of biomimetic laminated structures, the continuous SiC ceramic fiber, ductile metal Ti foil, and intermetallic Ti2AlNb foil were selected as structural components, which were alternately stacked in the sequence of Ti2AlNb-Ti-SiCf-Ti-Ti2AlNb to prepare the continuous SiC ceramic fiber-reinforced titanium-based laminated composite. The methods adopted were vacuum hot-pressing and ceramic fiber braiding. In the prepared state, the composite’s structural components were metallurgically bonded ideally, and the continuous SiC ceramic fiber was equidistantly distributed in the ductile metal Ti matrix. This composite’s phase is mainly composed of α-Ti, β-Ti, SiC, TiC, O, and B2 phases. In addition, along the ceramic SiC fiber lengthwise, the tensile test was performed on this composite at room temperature and a high temperature of 600°C, with the ultimate tensile strength being 948.76 MPa and 526.62 MPa, respectively, and, in this process, the fiber was debonded and pulled out. Meanwhile, the composite’s bending strength was measured to be 1506.21 MPa in a three-point bending test, and, under this bending load, the mode of crack propagation and failure mechanism were analyzed.

Highlights

Introduction e continuous SiC ceramic fiber-reinforced titanium-based composite has a great potential to be used as the structural material in the aerospace industry because it has excellent mechanical properties, such as high specific strength and stiffness, as well as good fatigue resistance [1,2,3,4]
The matrix alloy of traditional SiCf/Ti composites refers to disordered titanium alloys, such as TC4 and TC17
Being inspired by natural creatures in design, researchers have found that the internal hierarchical structure of shells endows them with excellent fracture resistance, toughness, and damage tolerance [4, 10,11,12]. e nacre and special protein layer of shells are alternately laminated to Advances in Materials Science and Engineering form a ductile-brittle combination

Summary

Research Article

Is plate’s microstructure shows that the ductile metal Ti and brittle intermetallic compound TiAl are alternately laminated, and the plate’s fracture toughness is better than that of the single TiAl. Based on the analysis above, the traditional continuous SiC ceramic fiber-reinforced titanium-based composite was selected as the design prototype in this paper to integrate with the concept of biomimetic laminated structures in shells. The continuous SiC ceramic fiber-reinforced titanium-based laminated composite was prepared by vacuum hot-pressing and ceramic fiber braiding By laminating this hybrid matrix, the composite was designed to combine the high strength and stiffness of the intermetallic compound Ti2AlNb, the high toughness and ductility of the ductile metal Ti, and the high strength of the SiC ceramic fiber, which provided a reference for the structural design of new composites

Experimental Procedures

Temperature Pressure

Results and Discussion

Fiber direction

Ti cps a b μm μm

Interface μm

Reaction layer

Tensile stress

Conclusions