Amorphous - Nanocrystalline Melt Spun Al-Si-Ni Based Alloys Modified with Cu and Zr

Archives of Metallurgy and Materials

P. Ochin¹  L. Perrière¹  A. Góral²  A. Kukuła-Kurzyniec²  J. Dutkiewicz²  P. Dłuzewski³ 

[1] Icmpe, Cnrs Umr 7182, 2-8 Rue Henri Dunant, 94320 Thiais, France;Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, 25 Reymonta str., 30-059 Kraków, Poland;Institute of Physics Pas al. Lotników 32/46, pl-02-668 Warsaw, Poland

关键词: Keywords : AlSiNi base metallic glass;    melt spinning;    amorphous aluminium alloys;    STEM;    HRTEM;   

DOI  :  10.2478/amm-2013-0010

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

In the present paper glass forming ability and structure of Al-Si-Ni based alloys were investigated. Three alloys starting from the ternary Al78Si12Ni10 [alloy 1], Al75Si12Ni8Zr5 [alloy 2] and Al73Si5Ni7Cu8Zr7 [alloy 3] were subjected to melt spinning process. The mean thickness of the obtained ribbons amounted between 25 and 40 μm. XRD and DSC studies showed predominantly amorphous structure of the ribbons. STEM and HRTEM methods confirmed participation of crystalline phase identified mainly as Al solid solution with the grain size near 10 nm. The mean microhardness [0.1N] of the ribbons was measured for alloys 1 - 3 respectively: 457 HV, 369 HV and 536 HV. The high value of hardness can be related to the presence of α-Al dispersoids in the amorphous matrix.

【 授权许可】

Unknown