| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
13th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
|
| Presentation Title |
P2-22: Metallurgical Quality Analysis of High Nb TiAl Alloy Cast Ingot Prepared by BaZrO3 Crucible |
| Author(s) |
Xuexian Zhang, Guangyao Chen, Bao Hua Duan, Yuchen Yang |
| On-Site Speaker (Planned) |
Xuexian Zhang |
| Abstract Scope |
In this paper, a new type of BaZrO3 refractory and high Nb TiAl alloy were prepared by vacuum induction melting. The shrinkage area, microstructure, microsegregation, microstructure uniformity and mechanical properties of the alloy at different refining temperatures were systematically studied by metallographic microscope, scanning electron microscope, ICP-AES and tensile test. The results show that the ingot with small concentrated shrinkage area and no crack can be obtained by controlling the refining temperature. The results show that the high Nb TiAl alloy prepared by vacuum induction melting with BaZrO3 crucible has good microstructure uniformity, and the macro segregation difference of Al and Nb elements is not more than 1.7% and 1% respectively. The yield strength of the alloy can reach 460Mpa, and its fracture morphology shows that it is brittle fracture. |