Consolidation of mechanically alloyed Al-15at%Cr powder using impact
and
static high pressures
Y. Minamino 1 , S. Yamada 1 , T. Yamane 2 , K. Hisayuki 2 , M.
Kiritani 3 and M. Komatu 3
1 Department of Adaptive Machine Systems, Graduate school of
Engineering, Osaka University,
2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
2 Department of Mechanical Engineering, Hiroshima Institute of
Technology, 2-1-1 Miyake,
Saeki-ku, Hiroshima 731-5143, Japan
3 Academic Frontier Research Center for Ultra-high speed Plastic
Deformation, Hiroshima
Institute
of Technology, 2-1-1 Miyake, Saeki-ku, Hiroshima 731-5143, Japan
Abstract
The powder of Al-15at%Cr amorphous with nanocrystalline Cr was
prepared from a
pure Al and Cr mixed powder by mechanical alloying using a high energy
planetary
ball mill, and it was consolidated by the static high pressure up to
2GPa and impact
high pressures. Improved compacts were obtained. However, they have
unknown
phases induced by static high pressures, or decomposition phases due
to local heat
generation by impact high pressures. Their Vickers hardness are about
5000 MPa
Vickers, which is quite high when compared with the hardness of 180
MPa Vickers for
commercial metal.
Keywords: static high pressure, dynamical high pressure, mechanical
alloying, Al-15at%Cr
alloy, amorphous, shear band, heat generation, decomposition, relative
density

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/47 must be provided.