Paper Title:
Synthesis of Porous TiAl-Mn Intermetallic Compounds by Reactive Sintering Process
  Abstract

The porous Ti-45at.%Al-1.6at.%Mn intermetallic alloys were fabricated by reactive sintering process using warm extruded mixtures consisting of elemental titanium and aluminum alloy powders and subsequent heat treatment. At the extrusion stage, three different extrusion ratios were tried in order to provide the various types of porous structure in the microstructure. It was clearly found that the shape of pore and porosity are largely dependent on extrusion ratio. With increasing extrusion ratio the porosity decreased, on the other hand, aspect ratio of porous structure increased. The porosity measured was in the range from 35% to 45%. The maximum porosity of 45% can be obtained when the specimen was reactively sintered with the extrusion ratio of 1. A directionality of pores oriented parallel to the extrusion direction was found when the extrusion ratio of powder mixtures is 6 and above.

  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
1615-1618
DOI
10.4028/www.scientific.net/MSF.475-479.1615
Citation
Y. S. Yang, M. S. Kim, W. Y. Kim, "Synthesis of Porous TiAl-Mn Intermetallic Compounds by Reactive Sintering Process", Materials Science Forum, Vols. 475-479, pp. 1615-1618, 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: Byoung Soo Lee, Dae Heon Joo, Myung Ho Kim
Abstract:Melt extrusion is a new fabrication process with the characteristics of both casting and extrusion. In this process, a metallic melt which...
635
Authors: Sung Chul Lim, Kyung Hoon Kim, Heung Bok Lee, Hyo Soo Lee, Hyouk Chon Kwon
Abstract:In this study, rod type Cu54Ni6Zr22Ti18 bulk amorphous alloy fabricated by warm extrusion of amorphous powders was investigated. To get bulk...
281
Authors: Filipe Neves, Isabel M. Martins, Jose Brito Correia, Manuela Oliveira, Eric Gaffet
Abstract:This study reports the use of X-ray diffraction quantitative phase analyses in NiTi alloys produced by MARES (Mechanically Activated...
625
Authors: Rodrigo Estevam Coelho, Paulo Jesus Costa Esteves, Jorge Ferreira Brito
Abstract:Recycle aluminum cans, an alternative route is presented in this work. The aluminum cans are cut in little flakes with a shears, and then...
212
Authors: Tae Bum Kim, Masakazu Tane, Shinsuke Suzuki, Takuya Ide, Hiroshi Utsunomiya, Hideo Nakajima
Abstract:Lotus-type porous aluminum with cylindrical pores oriented in one direction was deformed by Equal Channel Angular Extrusion (ECAE) through a...
263