Effect of B Content on the Microstructure and Properties of As-cast TC4/B

DOI

10.2991/emeit.2012.258How to use a DOI?

Keywords

Cast titanium alloy, TiB, Elastic modulus, Microstructure and Mechanical properties

Abstract

In this paper, the TC4 titanium matrix composite were fabricated by melting-casting process, the composite was reinforced with different content of B ranging from 0.2wt% to 1.0wt%. The microstructure and mechanical properties of as-cast TC4/B titanium matrix composite were investigated. The results indicate that the elastic modulus increase 15%-30% for TC4/B composite with 0.2wt% to 1.0wt%B. The microstructures of as-cast TC4/B are consisted of lamellar, grain boundaries and the second phase of TiB, and the second phase TiB aggregates at the prior- grain boundaries with necklace-like arrangement. The microstructures of TC4/B would refine with the increath of B content. From the analysis of fractographies, it can be found that with the increasing of B content, the fracture model transforms from typical intergranular fracture to mixed fracture.

Copyright

© 2012, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yunlian Qi
AU  - Liying Zeng
AU  - Zhimin Hou
AU  - Quan Hong
AU  - Yafeng Lu
PY  - 2012/09
DA  - 2012/09
TI  - Effect of B Content on the Microstructure and Properties of As-cast TC4/B
BT  - Proceedings of the 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT 2012)
PB  - Atlantis Press
SP  - 1177
EP  - 1180
SN  - 1951-6851
UR  - https://doi.org/10.2991/emeit.2012.258
DO  - 10.2991/emeit.2012.258
ID  - Qi2012/09
ER  -