Light pre-deformation induced misorientation of grain boundary bcc-precipitates from the Kurdjumov-sacks relationship in a Ni-Cr alloy

Yoshitaka Adachi, Kaneaki Tsuzaki

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4 Citations (Scopus)

Abstract

Crystallography of grain boundary (GB) bcc-precipitates formed in a lightly pre-deformed fee-matrix phase was examined in a Ni-43Cr alloy by EBSD with emphasis on a misorientation from the Kurdjumov-Sachs orientation relationship. The misorientation of GB bcc-precipitates became somewhat larger when the matrix phase was lightly pre-deformed. The GB bcc-precipitates were preferentially formed at the intersection of geometrically necessary dislocation boundaries (GNB) with grain boundaries. In contrast, the pre-deformation did not influence the misorientation of intragranular bcc-precipitates. The preferential precipitation and the increased misorientation at the GNB-GB intersection were discussed.

Original languageEnglish
Pages (from-to)341-349
Number of pages9
JournalMetals and Materials International
Volume11
Issue number5
DOIs
Publication statusPublished - Jan 1 2005

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misalignment
Precipitates
precipitates
Grain boundaries
grain boundaries
Dislocations (crystals)
intersections
Crystallography
matrices
Crystal orientation
crystallography

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "Crystallography of grain boundary (GB) bcc-precipitates formed in a lightly pre-deformed fee-matrix phase was examined in a Ni-43Cr alloy by EBSD with emphasis on a misorientation from the Kurdjumov-Sachs orientation relationship. The misorientation of GB bcc-precipitates became somewhat larger when the matrix phase was lightly pre-deformed. The GB bcc-precipitates were preferentially formed at the intersection of geometrically necessary dislocation boundaries (GNB) with grain boundaries. In contrast, the pre-deformation did not influence the misorientation of intragranular bcc-precipitates. The preferential precipitation and the increased misorientation at the GNB-GB intersection were discussed.",
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N2 - Crystallography of grain boundary (GB) bcc-precipitates formed in a lightly pre-deformed fee-matrix phase was examined in a Ni-43Cr alloy by EBSD with emphasis on a misorientation from the Kurdjumov-Sachs orientation relationship. The misorientation of GB bcc-precipitates became somewhat larger when the matrix phase was lightly pre-deformed. The GB bcc-precipitates were preferentially formed at the intersection of geometrically necessary dislocation boundaries (GNB) with grain boundaries. In contrast, the pre-deformation did not influence the misorientation of intragranular bcc-precipitates. The preferential precipitation and the increased misorientation at the GNB-GB intersection were discussed.

AB - Crystallography of grain boundary (GB) bcc-precipitates formed in a lightly pre-deformed fee-matrix phase was examined in a Ni-43Cr alloy by EBSD with emphasis on a misorientation from the Kurdjumov-Sachs orientation relationship. The misorientation of GB bcc-precipitates became somewhat larger when the matrix phase was lightly pre-deformed. The GB bcc-precipitates were preferentially formed at the intersection of geometrically necessary dislocation boundaries (GNB) with grain boundaries. In contrast, the pre-deformation did not influence the misorientation of intragranular bcc-precipitates. The preferential precipitation and the increased misorientation at the GNB-GB intersection were discussed.

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