J Mater Sci Technol ›› 1996, Vol. 12 ›› Issue (1): 11-14.

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Glass Formation and Thermal Stability in Rapidly Solidified Al-Fe-V-Si Alloy with Misch Metal Additions

Jianqiang WANG; Meiguang ZENG (M.K.Tseng) and Xiufang CHEN(Dept. of Material Science, College of Science, Northeastern University, Shenyang 110006, China)Lin DONG and Shixu GU(Liaoning Province Center of Analysis and Testing Research, Shenyang 110015, Chi   

  • Received:1996-01-28 Revised:1996-01-28 Online:1996-01-28 Published:2009-10-10

Abstract: A new amorphous Al87.3Fe4.3V0.7Si1.7Mm6.0(Mm: misch metal) was prepared by using melt-spinning technique. Differential scanning calorimetry (DSC), X-ray diffraction (XRD). transmis-sion electron microscopy (TEM) and energy dispersive X-ray (EDX) have been used to investigatethe crystallization behaviour of thi5 amorphous alloy It is found that the crystallization processcan be concluded as follows: amorphous→ amorphous plus fcc-Al→ fcc-Al plus AI11(La,Ce)3plus i-phase (icosahedral)→ fcc-Al plus Al11(La,Ce)3 plus i-phase plus ic-phase (icosahedralcompounds). The results of microhardness measurement show that HV values are higher thanthose in Al-Fe-V-Si based alloy and the maximum HV value corresponds to the coexisting ofnanoscale Al particles and i-phase.