Title

Interface formation and bonding control in high-volume-fraction (TiC+TiB2)/Al composites and their roles in enhancing properties

Document Type

Journal Article

Publication Title

Composites Part B: Engineering

Volume

209

Publisher

Elsevier

School

School of Engineering

RAS ID

32747

Funders

National Natural Science Foundation of China The Postdoctoral Science Foundation of China The Science and Technology Development Program of Jilin Province, China Science & Technology Research Foundation of Education Bureau of Jilin Province, China The Guangdong Basic and Applied Basic Research Foundation, China

Comments

Yang, H. Y., Wang, Z., Chen, L. Y., Shu, S. L., Qiu, F., & Zhang, L. C. (2021). Interface formation and bonding control in high-volume-fraction (TiC+ TiB2)/Al composites and their roles in enhancing properties. Composites Part B: Engineering, 209, article 108605. https://doi.org/10.1016/j.compositesb.2021.108605

Abstract

© 2021 Elsevier Ltd As interfaces play a more important role in high-volume-fraction ceramic/metal composites because of containing more hetero-phase interfaces, it is a great challenge to control the interfaces in such composites to balance their strength and plasticity and to obtain high performances. In this work, 50–60 vol% (TiC + TiB2)/Al composites were fabricated in Al–Ti–B4C system via a one-step method of reaction and densification, and their interface bonding and mechanical properties were compared with those of in-situ TiC/Al composites. Apparently, the defects, such as interfacial discontinuity, macro-pores, coarsening and agglomeration of particles, caused by increased ceramic content in the TiC/Al composites, are eliminated in the (TiC + TiB2)/Al composites using Al–Ti–B4C system. The 60 vol% (TiC + TiB2)/Al composite exhibits significantly enhanced mechanical properties, i.e. 70.5%, 60.7% and 69.8% respectively higher yield strength, ultimate compressive strength and plastic strain than 60 vol% TiC/Al composite. Such enhanced mechanical properties are attributed to the improvement in interface bonding strength and therefore the increase in the energy dissipation of crack propagation. The formation of enhanced interface in the (TiC + TiB2)/Al composites results from the reduction in the reaction heat in the Al–Ti–B4C system, improved crystallographic match and improved adhesion work between ceramic particles and matrix. This work may provide a new idea for the design and control of interfaces in high-volume-fraction ceramic-metal composites.

DOI

10.1016/j.compositesb.2021.108605

Research Themes

Natural and Built Environments

Priority Areas

Engineering, technology and nanotechnology

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