Glass-forming ability and crystallization of Mg-Ni amorphous alloys with Y addition

被引：5
作者：
Liu Liyan [1 ]
Teng Xinying [1 ]
Wang Yongjie [2 ]
Liu Teng [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Univ Jinan, Sch Phys & Technol, Jinan 250022, Peoples R China
来源：
RARE METALS | 2012年 / 31卷 / 03期
关键词：
Mg-based amorphous alloy; glass forming ability; crystallization; micro-hardness; BULK METALLIC GLASSES; MECHANICAL-PROPERTIES; HYDROGEN STORAGE; MELT-SPUN; ND;
D O I：
10.1007/s12598-012-0499-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mg86.33Ni13.67-x Y (x) (x=0, 1, 3, 6, 10) amorphous alloys were obtained by single-roller melt-spinning technique and the effect of Y addition on the glass forming ability(GFA), crystallization and micro-hardness of Mg-Ni alloys were studied. The results show that the GFA of Mg86.33Ni13.67-x Y (x) (x=0, 1, 3, 6, 10) is improved successfully with the Y addition. The highest GFA appeares at x=6, while the reduced glass transition temperature (T (rg)) is 0.5225 and the supercooled liquid region(Delta T (x)) is 42.06 K; the position of the main diffraction halo is different for the alloys, and the maximum of the main diffraction halo of alloys with x=0, 1, 3 corresponds to the main peaks of a metastable fcc-Mg6Ni or fcc-Mg6Ni + Ni-Y intermetallic phases, and for the alloys with x=6, 10, it corresponds to Mg-Y and Ni-Y intermetallic phases; the micro-hardness of the alloys is improved with Y additions, and the highest micro-hardness is obtained at x=6 at.%, which is 960 MPa.
引用
收藏
页码：244 / 249
页数：6
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