Paper Title:
Fabrication and Property of Amorphous/Nano Crystalline Al84Ni10Ce6 Bulk Alloy by a Powder Forging
  Abstract

The bulk Al84Ni10Ce6 alloy was fabricated by a powder forging process. The process involved pre-compaction of amorphous powder by cold pressing and subsequent isothermal forging at temperatures from 523 to 823K with the strain rate of 10-2 s-1. The porosity decreased rapidly with increasing forging temperature up to 648K, and a fully dense bulk specimen with the porosity less than 1% was achieved when the forging was carried out at and above 648K. TEM observation on the fully dense bulk alloys revealed a mixed structure consisting of nano-scaled crystalline particles and amorphous matrix. It was also revealed that the size and volume fraction of the crystalline phases increased with increasing forging temperature. Noticeably high compressive fracture strength of 1355MPa and Vickers hardness number of 530 were obtained at room temperature for the fully dense bulk specimen forged at 648K, which contains the refined crystalline particles (average size: 28nm, volume fraction: 44%) in an amorphous matrix.

  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
3493-3496
DOI
10.4028/www.scientific.net/MSF.475-479.3493
Citation
S. J. Noh, T. K. Jung, M. S. Kim, "Fabrication and Property of Amorphous/Nano Crystalline Al84Ni10Ce6 Bulk Alloy by a Powder Forging", Materials Science Forum, Vols. 475-479, pp. 3493-3496, 2005
Online since
January 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wei Zhang, Kunio Arai, J. Qiang, C. Qin, F. Jia, Akihisa Inoue
Abstract:The addition of Ti and Zr to Ni-Ta binary alloys is effective for the increase in stabilization of supercooled liquid and glass-forming...
1421
Authors: Victor I. Kolomytsev, M. Babanly, Alexandre Pasko, A.P. Shpak, Tetjana Sych, P. Ochin, Philippe Vermaut, Richard Portier, Eduard Cesari, D. Rafaja
Abstract:A series of multielementary AB-type shape memory alloys, quaternary (Ti,Hf)50(Ni,Cu)50 and quinary (Ti,Zr,Hf)50(Ni,Cu)50, have been produced...
113
Authors: Viorel Aurel Şerban, Cosmin Codrean, Ion Dragoş Uţu
Abstract:The paper makes a review about the opportunity, forming conditions and obtaining methods of bulk amorphous alloys and their properties. There...
37
Authors: Ying Mei Teng, Zhao Hui Zhang, Zi Zhou Yuan
Chapter 2: Mechanical Properties of Materials
Abstract:The bulk nanocrystalline (NC) aluminum (Al) 5083 was synthesized by spark plasma sintering (SPS) technique with low initial pressure of 1...
113