Microstructure and mechanical properties of TiBw/Ti-Ti3Al metal-intermetallic laminate (MIL) composites

6th Annual International Conference on Material Science and Engineering

Qin, Shaohua^1 ; Geng, Lin^1 ; Cui, Xiping^1 ; Zhang, Jie^1

School of Materials Science and Engineering, Harbin Institute of Technology, P.O. Box433, Harbin

150001, China^1

关键词: Alternating layers;    Annealing in vacuum;    Final microstructures;    Metal intermetallic laminate composites;    Micro-structural characterization;    Microstructure and mechanical properties;    Strength and ductilities;    Titanium aluminides;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/397/1/012025/pdf
DOI  :  10.1088/1757-899X/397/1/012025

来源: IOP

【 摘 要 】

TiBw/Ti-Ti3Al laminated composites have been fabricated through reaction annealing in vacuum using 5vol. % TiBw/Ti composite foils and Al foils with different initial thicknesses. The aluminum layer is consumed by forming a titanium aluminide intermetallic compound. Thus, the final microstructure consists of alternating layers of intermetallic compound and unreacted TiBw/Ti composite. Microstructural characterization by scanning electron microscopy (SEM), X-ray diffraction (XRD) has shown that only the intermetallic Ti3Al is formed. The designing laminated composites exhibit a superior combination of tensile strength and ductility during the tensile process.