Dislocations in ambient temperature creep of HCP metals

Tetsuya Matsunaga, Eiichi Sato, Kazuhiko Kuribayashi

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

4 Citations (Scopus)

Abstract

Metals with a hexagonal closed packed (HCP) structure show creep behavior at ambient temperature. Features of this phenomenon are: (1) it appears in all and only HCP structure metals and alloys; (2) dislocations are contributing; and (3) it shows very low apparent activation energy (ca. 10 kJ/mol). Transmission electron microscope (TEM) observation was conducted on crept specimens of commercially pure Ti (CP-Ti), pure Mg, and Zn. Results showed no dislocation tangle. The dislocation arrays were aligned straightly inside the grain. The dislocation array consisted of one dislocation type. One slip system was activated in the ambient temperature creep condition. Therefore, it was considered that work hardening does not occur, and that creep deformation continued.

Original languageEnglish
Title of host publicationInnovations in Titanium Technology - TMS 2007 Annual Meeting and Exhibition
Pages227-232
Number of pages6
Publication statusPublished - 2007 Dec 1
EventInnovations in Titanium Technology - Orlando, FL, United States
Duration: 2007 Feb 252007 Apr 1

Publication series

NameTMS Annual Meeting

Other

OtherInnovations in Titanium Technology
Country/TerritoryUnited States
CityOrlando, FL
Period07/2/2507/4/1

Keywords

  • Ambient temperature creep
  • HCP metals
  • TEM

ASJC Scopus subject areas

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

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