| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1621752 | Journal of Alloys and Compounds | 2009 | 4 Pages |
Abstract
A novel Mg–50% TiB2 master alloy has been developed by powder in situ synthesis process and its grain refining effect on AZ91D magnesium alloy has been investigated. X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS) results show the existence of TiB2 particles in this master alloy. After adding 1.8 wt% this master alloy, the average grain size of AZ91D decreased markedly from about 240 μm to 50 μm, and the dendritic structure of the primary phase α-Mg was obviously refined. Ti and B enriched particles, often observed in the central regions of magnesium grains, are proposed to be the potent nucleating substrates for primary Mg.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Shengfa Liu, Yuan Zhang, Hui Han, Bo Li,