作者
J. Ochoa G. González, A. Sagarzazu, R. Villalba
发表日期
2007
期刊
J. Alloys and Compounds
卷号
434
页码范围
525-529
简介
The present work concern the amorphisation process induced by mechanical alloying in the NiW, NiMo and MoW systems. The alloys chosen combine a group of transition elements varying from very similar atomic radius and electronic valences (MoW) to different ones (NiW and NiMo). The three systems achieved an amorphous state after 50h of milling. The mechanism of amorphisation proposed for NiW and NiMo was the combined effect of an excess concentration of the solute atoms entering into the structure of one of the elements and a critical concentration of defects. Continuous formation of an amorphous phase at the interface of the crystalline phase was observed during the process. MoW seems to amorphize by continuous reduction of grain size down to a critical value where the amorphisation takes place.
学术搜索中的文章
G González, A Sagarzazu, R Villalba, J Ochoa - Journal of alloys and compounds, 2007