Phase evolution and microstructural characterisation of high-energy ball milled Al-Si-Fe-Ni alloys

被引：1

作者：

Sá Lisboa, RD ^{[1
]}

Perdigao, MNRV ^{[1
]}

Kiminami, CS ^{[1
]}

Botta, WJ ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Mat Engn, BR-13560 Sao Carlos, Brazil

来源：

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS | 2002年 / 386-3卷

关键词：

Al alloys; amorphization reaction; high-energy ball milling; intermetallic compounds;

D O I：

10.4028/www.scientific.net/MSF.386-388.59

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of milling power and milling time on phase evolution during high-energy ball milling, were investigated for the Al50Si30Fe15Ni5 alloy. Elemental powders were milled in a SPEX 8000 apparatus and the resulting powders were characterised by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Partially amorphous powders, together with the (Al,Si)(7)Ni-3 intermetallic compound, were obtained in early stages of milling. Silicon remained unreacted throughout long milling times, with particle size diminishing down to nanometric levels. Long milling times resulted in a single amorphous phase, though highly contaminated by the milling tools. Milling time and milling power showed a compensatory effect on the nature of phases obtained.

引用

页码：59 / 64

页数：6

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