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Initial study of strengthening of NiAl–Cr(Mo)–Hf alloys by strong magnetic field

Published online by Cambridge University Press:  03 March 2011

G.J. Ma ,
C.W. Wu ,
W.L. Zhou ,
X.L. Guo ,
M.F. Ren  and
J.T. Guo
G.J. Ma
Affiliation:
National Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, People's Republic of China
C.W. Wu*
Affiliation:
National Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, People's Republic of China
W.L. Zhou
Affiliation:
Department of Materials Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
X.L. Guo
Affiliation:
National Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, People's Republic of China
M.F. Ren
Affiliation:
National Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, People's Republic of China
J.T. Guo
Affiliation:
Shengyang Institute of Metals Research, Chinese Academy, Shengyang 110015, People's Republic of China
*
a) Address all correspondence to this author. e-mail: cwwu@dlut.edu.cn
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Abstract

It was found that after treatment under 10T magnetic field and temperature 900 °C the bending strength of NiAl–Cr(Mo)–Hf alloy is increased by about 75%. The fracture section observation shows that the specimens' ductility is enhanced by the magnetic field treatment. Electron probe microanalysis shows that after treatment of the magnetic field the Heusler phases at NiAl/Cr(Mo) grain boundaries are partially dissolved and the small Heusler phases particles at Cr(Mo) and matrix phases interfaces almost dissolved into NiAl matrix.

Keywords

DuctilityFractureIntermetallic alloys
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 2 , February 2005 , pp. 295 - 298
Copyright
Copyright © Materials Research Society 2005

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References

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