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Grain Boundary Sliding Kinetics and Stress Relaxation Phenomena in Ni Alloys

Published online by Cambridge University Press:  15 February 2011

F. Cosandey ,
S. Ui ,
B. Cao ,
R. Schaller  and
W. Benoit
F. Cosandey
Affiliation:
Rutgers University, Dept. of Mechanics and Materials Science, Piscataway, NJ 08854
S. Ui
Affiliation:
Rutgers University, Dept. of Mechanics and Materials Science, Piscataway, NJ 08854
B. Cao
Affiliation:
Swiss Federal Institute of Technology, Institute de Genie Atomique, CH-1015 Lausanne, Switzerland
R. Schaller
Affiliation:
Swiss Federal Institute of Technology, Institute de Genie Atomique, CH-1015 Lausanne, Switzerland
W. Benoit
Affiliation:
Swiss Federal Institute of Technology, Institute de Genie Atomique, CH-1015 Lausanne, Switzerland
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Abstract

Internal friction measurements have been performed on Ni-20 wt% Cr alloys containing trace additions of Ce ranging from 0 to 180 at ppm, in order to determine grain boundary sliding kinetics and associated stress relaxation phenomena. Two anelastic relaxation peaks have been observed corresponding to intrinsic grain boundary sliding between carbide precipitates and to macroscopic sliding with elastic accommodation at triple points. The effects of Ce on these grain boundary phenomena and resulting alloy ductilities are also presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 229: Symposium Q – Structure/Property Relationships for Metal/Metal Interfaces , 1991 , 255
Copyright
Copyright © Materials Research Society 1991

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