| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1609389 | Journal of Alloys and Compounds | 2015 | 8 Pages |
Abstract
The grain refining performance of titanium diboride particles in zinc alloy was investigated by adding inâ£situ formed Al-TiB2 master alloy into ZA27 alloy. The results showed that TiB2 particles could significantly refine the structure of ZA27. After adding 1.1% TiB2, the average grain size decreased markedly from 205.4 μm to 65.8 μm. To characterize the mechanism by which TiB2 refines the grain size, synchrotron microradiography technique was used for the first time to investigate the effect of TiB2 on the grain nucleation and growth kinetics. Real-time observations revealed that TiB2 particles refine ZA27 by facilitating heterogeneous nucleation, enhancing dendrite fragmentation and constraining the dendrite growth.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Fei Chen, Feng Mao, Zhenjing Xuan, Guangyuan Yan, Jingyu Han, Tongmin Wang, Zhiqiang Cao, Yanan Fu, Tiqiao Xiao,