Strong and Ductile in Situ Titanium Matrix Composites Reinforced by Titanium Boride Whiskers

7th Annual International Conference on Materials Science and Engineering

Wu, Hao^1 ; Liu, Zhenhua^2 ; Xu, Zhipeng^1 ; Hu, Haibo^1

School of Materials Science and Engineering, University of Jinan, Jinan

250022, China^1

Technical Division, Sinomach Foundry and Metal Forming Co. Ltd., Jinan

250306, China^2

关键词: Elongation to fracture;    Industrial processing;    Interfacial cohesions;    Microstructure and mechanical properties;    Network reinforcements;    Reinforcement distributions;    Situ Titanium matrix composite;    Thermo-mechanical processing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012028/pdf
DOI  :  10.1088/1757-899X/562/1/012028

来源: IOP

【 摘 要 】

A facile industrial processing route with low production costs was developed to produce in situ TiBw/Ti matrix composites with a network reinforcement distribution. The formation mechanism, microstructure and mechanical properties are characterized. In contrast to traditional homogeneous TiBw/Ti counterparts with uniform reinforcement distribution, the present material exhibited a comparable ultimate strength, a good fracture toughness of 33.7 ± 0.3 MPa•m1/2, and a significantly elevated tensile ductility increasing by 58% at room temperature. Superior elongation to fracture as large as 67% at 700 °C demonstrated the potential for the follow-up thermo-mechanical processing or forming. Therefore our work may provide inspirations of fabricating cost-effective high-performance metallic structural materials through the tailoring of interfacial cohesion and reinforcement distribution.