Hostname: page-component-848d4c4894-ttngx Total loading time: 0 Render date: 2024-05-15T07:35:10.569Z Has data issue: false hasContentIssue false
  • English
  • Français

UFG to NC FePd by Combined Reaction Transformation Mode of Severely Plastically Deformed Disordered FePd

Published online by Cambridge University Press:  26 February 2011

Vincent Sokalski ,
Andreas Kulovits  and
Jorg Wiezorek
Vincent Sokalski
Affiliation:
vms6@pitt.eduUniversity of PittsburghDept. of Mechanical Engineering and Materials Science848 Benedum HallPittsburgh PA 15261United States
Andreas Kulovits
Affiliation:
akk8@pitt.edu, University of Pittsburgh, Dept. of Mechanical Engineering and Materials Science, 848 Benedum Hall, Pittsburgh, PA, 15261, United States
Jorg Wiezorek
Affiliation:
wiezorek@pitt.edu, University of Pittsburgh, Dept. of Mechanical Engineering and Materials Science, 848 Benedum Hall, Pittsburgh, PA, 15261, United States
Get access

Abstract

Numerous studies have shown that equiaxed ultra fine grained FePd alloys can be produced by phase transformation of heavily deformed austenitic FePd via the combined reaction mode. As the magnetic properties can be improved by suppression of the polytwinned micro-constituent formed by the conventional ordering mode it appears reasonable to speculate that further grain refinement might lead to further enhancement. In order to reduce the grain size in bulk intermetallic alloys severely plastically deformed austenitic FePd has been phase transformed in this study. Equal channel angular pressing (ECAP) has been used to deform disordered FePd. The microstructure and property evolution during the deformation process and post-deformation annealing have been studied using SEM, TEM and hardness and magnetization curve measurements. The observations are compared to known results from use of other deformation processing routes, such as cold rolling.

Keywords

cold workingmicrostructurephase transformation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II05-18
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Deshpande, A. et al.: Nano and Microstructural Design of Advanced Materials; (2003) 129–142 Google Scholar
[2] Klemmer, T.J. et al.: Journal of Magnetism and Magnetic Materials 266 (2003) 79–87 Google Scholar
[3] Deshpande, A.R., Wiezorek, J.M.K.: MRS Symp. Proc. Vol. 842 (2005) S5.6.1–6.6 Google Scholar
[4] Valiev, R.Z. et al.: Mater. Sci. Eng. A. 168, 141 (1993)Google Scholar
[5]Segal, V.M.: Materials Science and EngineeringA 386 (2004) 269–276 Google Scholar
[6] Deshpande, A.R. et al.: Journal of Magnetism and Magnetic Materials 270 (2004) 157–166 Google Scholar
[7] Deshpande, A.R. et al.: Acta Materialia 52 (2004) 2903–2911 Google Scholar
[8] Wiezorek, J.M.K.: Materials Science Forum, Proceedings Thermec'06, in press (2007)Google Scholar