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Metals 2015, 5(4), 2328-2339; doi:10.3390/met5042328

Modeling of TiAl Alloy Grating by Investment Casting

1,2
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1,2
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2
and
1,2,3,*
1
National Key Laboratory of Science and Technology on Precision Heat Processing of Metals, Harbin Institute of Technology, Harbin 150001, China
2
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
3
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
*
Author to whom correspondence should be addressed.
Academic Editor: Ana Sofia Ramos
Received: 19 October 2015 / Revised: 3 December 2015 / Accepted: 4 December 2015 / Published: 9 December 2015
(This article belongs to the Special Issue Intermetallics 2016)
View Full-Text   |   Download PDF [957 KB, uploaded 9 December 2015]   |  

Abstract

The investment casting of TiAl alloys has become the most promising cost-effective technique for manufacturing TiAl components. This study aimed to investigate a series of problems associated with the investment casting of TiAl alloys. The mold filling and solidification of this casting model were numerically simulated using ProCAST. Shrinkage porosity was quantitatively predicted by a built-in feeding criterion. The results obtained from the numerical simulations were compared with experiments, which were carried out on Vacuum Skull Furnace using an investment block mold. The investment casting of TiAl grating was conducted for verifying the correctness and feasibility of the proposed method. The tensile test results indicated that, at room temperature, the tensile strength and elongation were approximately 675 MPa and 1.7%, respectively. The microstructure and mechanical property of the investment cast TiAl alloy were discussed. View Full-Text
Keywords: numerical simulation; TiAl alloys; investment casting; shrinkage porosity numerical simulation; TiAl alloys; investment casting; shrinkage porosity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jia, Y.; Xiao, S.; Tian, J.; Xu, L.; Chen, Y. Modeling of TiAl Alloy Grating by Investment Casting. Metals 2015, 5, 2328-2339.

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