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Title: Comparative investigation on microstructures and mechanical properties of (TiB + TiC)/Ti-6Al-4V composites from Ti-B4C-C and Ti-TiB2-TiC systems

Abstract

Highlights: • The (TiB{sub w}+TiC{sub p})/Ti-6Al-4V composites were fabricated from Ti-B{sub 4}C-C and Ti-TiB{sub 2}-TiC systems by reactive hot-pressed sintering. • Microstructures and mechanical properties of the two kinds of composites were comparatively investigated. • The composites from Ti-TiB{sub 2}-TiC system possess higher elastic modulus and Vickers hardness than those from Ti-B{sub 4}C-C system. • The composites from Ti-TiB{sub 2}-TiC system have higher bending strength than the other system while employing same conditions. • The composites from Ti-B{sub 4}C-C system present better abrasion resistance than those from Ti-TiB{sub 2}-TiC system. - Abstract: Two percentages of TiB + TiC reinforced Ti-6Al-4V composites from Ti-B{sub 4}C-C and Ti-TiB{sub 2}-TiC systems were fabricated by reactive hot-pressed sintering. Their microstructures and mechanical properties involving elastic modulus, Vickers hardness, bending strength and wear property were investigated comparatively. The experimental results show that needle-like TiB whiskers and near-equiaxed TiC particles are evenly distributed in the Ti-6Al-4V matrix. The mechanical properties of the (TiB + TiC)/Ti-6Al-4V composites are closely related with the nominal composition and synthesis system of TiB + TiC reinforcement and the microstructures of composites. With increasing the nominal volume fraction of reinforcement, both elastic modulus and Vickers hardness increase more or less and themore » bending strength decreases in varying degrees. A certain increase of pores in the composites with the sintering temperature increasing to 1300 °C can markedly affect the bending strength. Moreover, no matter what the sintering temperature and nominal volume fraction of reinforcement, the elastic modulus and Vickers hardness of composites from the Ti-TiB{sub 2}-TiC system are higher than those from the Ti-B{sub 4}C-C system. Similarly, the composites from the Ti-B{sub 4}C-C system present better abrasion resistance than those from the Ti-TiB{sub 2}-TiC system due to the difference of interfacial bonding between the TiC particles and Ti-6Al-4V matrix in the two kinds of composites.« less

Authors:
; ;  [1];  [2];  [1];  [1]
  1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013 (China)
  2. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049 (China)
Publication Date:
OSTI Identifier:
22832981
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 140; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM COMPOUNDS; BORON CARBIDES; COMPOSITE MATERIALS; FLEXURAL STRENGTH; MICROSTRUCTURE; PRESSES; SINTERING; TITANIUM ALLOYS; TITANIUM BORIDES; TITANIUM CARBIDES; VANADIUM COMPOUNDS; VICKERS HARDNESS; WHISKERS

Citation Formats

Yi, Meng, Zhang, Xiangzhao, Liu, Guiwu, Wang, Bo, Shao, Haicheng, Qiao, Guanjun, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049. Comparative investigation on microstructures and mechanical properties of (TiB + TiC)/Ti-6Al-4V composites from Ti-B4C-C and Ti-TiB2-TiC systems. United States: N. p., 2018. Web. doi:10.1016/J.MATCHAR.2018.04.010.
Yi, Meng, Zhang, Xiangzhao, Liu, Guiwu, Wang, Bo, Shao, Haicheng, Qiao, Guanjun, & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049. Comparative investigation on microstructures and mechanical properties of (TiB + TiC)/Ti-6Al-4V composites from Ti-B4C-C and Ti-TiB2-TiC systems. United States. https://doi.org/10.1016/J.MATCHAR.2018.04.010
Yi, Meng, Zhang, Xiangzhao, Liu, Guiwu, Wang, Bo, Shao, Haicheng, Qiao, Guanjun, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049. 2018. "Comparative investigation on microstructures and mechanical properties of (TiB + TiC)/Ti-6Al-4V composites from Ti-B4C-C and Ti-TiB2-TiC systems". United States. https://doi.org/10.1016/J.MATCHAR.2018.04.010.
@article{osti_22832981,
title = {Comparative investigation on microstructures and mechanical properties of (TiB + TiC)/Ti-6Al-4V composites from Ti-B4C-C and Ti-TiB2-TiC systems},
author = {Yi, Meng and Zhang, Xiangzhao and Liu, Guiwu and Wang, Bo and Shao, Haicheng and Qiao, Guanjun and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049},
abstractNote = {Highlights: • The (TiB{sub w}+TiC{sub p})/Ti-6Al-4V composites were fabricated from Ti-B{sub 4}C-C and Ti-TiB{sub 2}-TiC systems by reactive hot-pressed sintering. • Microstructures and mechanical properties of the two kinds of composites were comparatively investigated. • The composites from Ti-TiB{sub 2}-TiC system possess higher elastic modulus and Vickers hardness than those from Ti-B{sub 4}C-C system. • The composites from Ti-TiB{sub 2}-TiC system have higher bending strength than the other system while employing same conditions. • The composites from Ti-B{sub 4}C-C system present better abrasion resistance than those from Ti-TiB{sub 2}-TiC system. - Abstract: Two percentages of TiB + TiC reinforced Ti-6Al-4V composites from Ti-B{sub 4}C-C and Ti-TiB{sub 2}-TiC systems were fabricated by reactive hot-pressed sintering. Their microstructures and mechanical properties involving elastic modulus, Vickers hardness, bending strength and wear property were investigated comparatively. The experimental results show that needle-like TiB whiskers and near-equiaxed TiC particles are evenly distributed in the Ti-6Al-4V matrix. The mechanical properties of the (TiB + TiC)/Ti-6Al-4V composites are closely related with the nominal composition and synthesis system of TiB + TiC reinforcement and the microstructures of composites. With increasing the nominal volume fraction of reinforcement, both elastic modulus and Vickers hardness increase more or less and the bending strength decreases in varying degrees. A certain increase of pores in the composites with the sintering temperature increasing to 1300 °C can markedly affect the bending strength. Moreover, no matter what the sintering temperature and nominal volume fraction of reinforcement, the elastic modulus and Vickers hardness of composites from the Ti-TiB{sub 2}-TiC system are higher than those from the Ti-B{sub 4}C-C system. Similarly, the composites from the Ti-B{sub 4}C-C system present better abrasion resistance than those from the Ti-TiB{sub 2}-TiC system due to the difference of interfacial bonding between the TiC particles and Ti-6Al-4V matrix in the two kinds of composites.},
doi = {10.1016/J.MATCHAR.2018.04.010},
url = {https://www.osti.gov/biblio/22832981}, journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 140,
place = {United States},
year = {2018},
month = {6}
}