Paper Title:
Chemical Reactions during Sintering of Mn and Mn-Cr Prealloyed Steels in Inert versus Reducing Atmospheres
  Abstract

In this work the reduction during sintering of Mn and/or Cr prealloyed steels has been studied. In inert atmospheres, the reduction of surface and especially of internal oxides in these steels is shifted to markedly higher temperatures than in Fe-C or conventionally alloyed PM steel grades, reduction being not yet completed at 1300°C. At least at higher alloy element contents, the main reduction starts about 1000°C compared to 700°C for Fe-C, in both cases removal of surface oxides being the first major process. Sintering in high purity H2 results in partial reduction in the 400°C range, H2O being formed as the product, but removal of the remaining oxides requires more or less the same high temperatures as in inert atmospheres, and the reaction product is mainly CO, which confirms that at temperatures >1000°C carbon is the reducing agent in any sintering atmosphere.

  Info
Periodical
Edited by
Ionel Chicinaş and Liviu Brânduşan
Pages
203-206
DOI
10.4028/www.scientific.net/MSF.672.203
Citation
H. Danninger, M. Jaliliziyaeian, C. Gierl Mayer, S. Bengtsson, "Chemical Reactions during Sintering of Mn and Mn-Cr Prealloyed Steels in Inert versus Reducing Atmospheres", Materials Science Forum, Vol. 672, pp. 203-206, 2011
Online since
January 2011
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: Eduard Hryha, Eva Dudrová
Abstract:To study of the sintering behaviour of the Fe-0.8Mn-0.5C powder system the cylindrical specimens with a density of ~7.0 g/cc were sintered...
761
Authors: Srinivasan Swaminathan, Michael Rohwerder
Abstract:High strength steels for automotive industry undergo recrystallization annealing in N2-H2 gas atmosphere prior to hot dip galvanizing....
203
Authors: Kaline Pagnan Furlan, Julia Zimmermann de Assunção, Gustavo Paz, Cristiano Binder, Aloisio Nelmo Klein
Chapter 3: Properties
Abstract:The development of dry self-lubricating materials is directly linked to the rising requirements of performance. Iron and steel are the most...
415
Authors: Hong Ying Dong, Li Wei Zhu, Xin Tian, Xi Long Jin, Yu Bai, Wen Ma
Symposium M: High Temperature/Ultra-High Temperature Structural Materials, Surface and Coating Engineering
Abstract:Ti/Si/C element powders were used to synthesize Ti3SiC2 by spark plasma sintering. The synthesized products consisted...
242
Authors: Christian Gierl-Mayer, Herbert Danninger
Abstract:The production of ferrous powder metallurgical parts by the press-and-sinter route becomes more and more attractive. Today, parts are...
106