Paper Title:
Formation of Fe86Zr5.5Nb5.5B3 Nanocrystalline Bulk Alloy under High Pressure
  Abstract

Mechanical alloying(MA) technique and single-roller melt spinning technique were used to prepare Fe86Zr5.5Nb5.5B3 nanocrystalline and amorphous powders, bulk alloys were prepared by cryogenically high-pressure quick sintering. The results showed that: (1) after MA process for 15 hours, the grain size of α-Fe phase was ≤10nm; (2) melt spinning powders were fragmented by ball milling, but remained amorphous state. The crystallization temperature of this amorphous powder was about 500°C. Apparent activation energy of the amorphous crystallization was E=294.1KJ/mol; (3) under the quick sintering conditions of P=5.5GPa/t=3min/Pw≥1050W, single phaseα-Fe nanocrystalline(8~15nm) bulk alloys with relative density≥98.7% can be obtained.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
3467-3470
DOI
10.4028/www.scientific.net/MSF.475-479.3467
Citation
B. Lu, D. Q. Yi, B. Yan, J. L. Yin, Y. Liu, H. Q. Liu, B. L. Wu, X. L. Chen, "Formation of Fe86Zr5.5Nb5.5B3 Nanocrystalline Bulk Alloy under High Pressure", Materials Science Forum, Vols. 475-479, pp. 3467-3470, 2005
Online since
January 2005
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$32.00
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