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Recrystallization characteristics of oxide dispersion strengthened nickel-base alloysElectron microscopy was employed to study the process of recrystallization in two oxide dispersion strengthened (ODS) mechanically alloyed nickel-base alloys, MA 754 and MA 6000E. MA 754 contained both fine, uniformly dispersed particles and coarser oxides aligned along the working direction. Hot rolled MA 754 had a grain size of 0.5 microns and high dislocation densities. After partial primary recrystallization, the fine grains transformed to large elongated grains via secondary (or abnormal) grain growth. Extruded and rolled MA 6000E contained equiaxed grains of 0.2 micron diameter. Primary recrystallization occurring during working eliminated virtually all dislocations. Conversion from fine to coarse grains was triggered by gamma prime dissolution; this was also a process of secondary or abnormal grain growth. Comparisons were made to conventional and oxide dispersion strengthened nickel-base alloys.
Document ID
19810064811
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hotzler, R. K.
(Queensborough Community College Bayside, NY, United States)
Glasgow, T. K.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Subject Category
Metallic Materials
Meeting Information
Meeting: International Symposium on Superalloys 1980
Location: Champion, PA
Start Date: September 21, 1980
End Date: September 25, 1980
Accession Number
81A49215
Distribution Limits
Public
Copyright
Other

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