Microstructure of a Σ17b grain boundary in molybdenum

Sadahiro Tsurekawa, Tomoaki Tanaka, Hideharu Nakashima, Hideo Yoshinaga

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A Σ17b boundary in molybdenum has high fracture strength, though this boundary has a poor atom matching compared with Σ9 and Σ11 coincidence boundaries. In order to clarify the reason from the viewpoint of grain boundary structure, the transmission electron microscopy observations have been conducted. The grain boundary of (334) Σ17b is shown to be a plane matching boundary which is regarded as one of the low energy boundaries. Interface dislocations to assure the coherency at the boundary are present in addition to DSC dislocations. Such a coherent nature of the boundary structure due to the presence of the dislocations is considered to be responsible for the fairly high fracture strength of the boundary.

Original languageEnglish
Pages (from-to)377-381
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume58
Issue number4
DOIs
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

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

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