C11b type precipitates in B2 parent and B19 martensitic matrices in Ti-Pd alloy

Minoru Nishida, Mitsuhiro Matsuda, Daisuke Hashimoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The morphology and crystallography of the Ti2Pd phase with C11b structure precipitated in B2 parent and B19 martensitic matrices in a Ti-rich Ti-Pd shape memory alloy have been investigated by transmission electron microscopy. Three Ti2Pd variants are recognized in the specimen aged above the Af temperature, i.e., in the B2 matrix. On the other hand, four Ti2Pd variants are confirmed in the specimen aged below the As temperature, i.e., in the B19 matrix. The ori.entation relationship between the Ti2Pd precipitate and each matrix is consistent with the number of Ti2Pd variants. The Ti 2Pd precipitates in the B2 and the B19 matrices have disk and polygonal plate shapes, respectively. The c-axis of Ti2Pd precipitate in the B2 matrix is perpendicular to the disk surface. On the other hand, that in the B19 matrix is parallel to the plate surface. These differences are well explained by the magnitude of the coherent strain.

Original languageEnglish
Title of host publicationProceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
EditorsJ.M. Howe, D.E. Laughlin, J.K. Lee, U. Dahmen, W.A. Soffa
Pages81-86
Number of pages6
Volume2
Publication statusPublished - 2005
Externally publishedYes
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 - Phoenix, AZ, United States
Duration: May 29 2005Jun 3 2005

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
CountryUnited States
CityPhoenix, AZ
Period5/29/056/3/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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