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Dislocation models for the nucleation of certain shear transformations. [TiCr2].

Author
Allen, C. W.
Published
United States : [publisher not identified], 1986
Springfield, Va.: National Technical Information Service, [approximately 1986]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Kolar, H. R. and Spence, J. C. H.

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Summary
A shear transformation, the simplest form of martensitic transformation, proceeds by glide of groups of partial dislocations. HREM of the Laves phase TiCr2 reveals that the groups are, in effect, partial dislocation dipoles for the 2H ..-->.. 4H transformation. The origin of such dipoles is then examined in relation to the 2H ..-->.. 4H and 2H ..-->.. 6H/sub 1/ transformations with the conclusion that nucleation either within perfect crystal, from grain boundaries or from free surfaces is energetically feasible at least for 2H ..-->.. 4H.
Report Numbers
DE87001483; CONF-860879-4
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: W-31-109-ENG-38
OSTI Identifier 5029765
Research organization: Argonne National Lab., IL (USA). Materials Science and Technology Div.
Research organization: Arizona State Univ., Tempe (USA). Dept. of Physics.
Research organization: IBM Corp., Tucson, AZ (USA).
View MARC record | catkey: 47369847