| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9802705 | Intermetallics | 2005 | 6 Pages |
Abstract
An Al-10Ni-8Y (at.%) alloy was atomized by Ar gas and the morphology, microstructure, thermal stability, phase composition and microhardness of the as-atomized powder were investigated. Most of the powders are spherical in shape, but the surface morphology was different for powder of different size. The cross-section microstructure of powder with size below 15 μm in diameter showed no detailed feature, indicating existence of amorphous phase or nanocrystalline structure. The as-atomized powder showed four distinct exothermic peaks when heated at 296, 340, 366 and 456 °C. The glass transition temperature Tg, crystallization temperature Tx, and the temperature interval of the supercooled liquid region ÎTx (=TxâTg) were detected to be about 266, 288 and 22 °C. The Al82Ni10Y8 alloy powder exhibits a high Vickers hardness of 230.6, and shows great potential for structural application.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yong Liu, Zuming Liu, Sheng Guo, Yong Du, Baiyun Huang, Jinsong Huang, Shiqi Chen, Fengxiao Liu,