Microstructure and mechanical properties of as cast titanium alloys with high elastic modulus

In this paper, the ZTC4/B/C titanium matrix composite containing 0·2-0·5 wt-%B and 0·5-2 wt-%C was fabricated using melting-casting process. The microstructure and mechanical properties of as cast ZTC4/B/C Ti matrix composite were investigated. The results indicate that the microstructures of as cas...

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Bibliographic Details
Published in:Materials research innovations 2014-07, Vol.18 (sup4), p.S4-212-S4-214
Main Authors: Qi, Y. L., Zeng, L. Y., Hou, Z. M., Hong, Q., Liu, S. B., Zhao, J., Xie, H. S.
Format: Article
Language:English
Subjects:
Cast titanium alloy
Elastic modulus
Grain boundaries
Mechanical properties
Microstructure
Modulus of elasticity
Phases
Second phase
Titanium
Titanium base alloys
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Summary:In this paper, the ZTC4/B/C titanium matrix composite containing 0·2-0·5 wt-%B and 0·5-2 wt-%C was fabricated using melting-casting process. The microstructure and mechanical properties of as cast ZTC4/B/C Ti matrix composite were investigated. The results indicate that the microstructures of as cast ZTC4/B/C were consisted of lamellar α, β at grain boundary and second phases of bar-like TiB and spherical-like TiC. The elastic modulus of ZTC4/B with 0·5 wt-%B is 145 GPa, 30% higher than that of the matrix alloy. The ultimate tensile strength of ZTC4/B/C with 0·5 wt-%B and 0·5 wt-%C reached 1300 MPa, 25% higher than that of the matrix alloy.
ISSN:1432-8917
1433-075X
DOI:10.1179/1432891714Z.000000000679