Grain boundary migration of 〈110〉 tilt ∑11 and ∑21 boundaries in pure aluminum

Fuyuki Yoshida, Masato Uehara, Ken Ichi Ikeda, Hideharu Nakashima, Hiroshi Abe

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Migrations of 〈110〉 tilt ∑11 and ∑27 boundaries in 99.99% purity aluminum have been investigated by Sun and Bauer technique as a function of temperature. In the JE11 tilt boundary, the activation energy for grain boundary migration is about 1/2 of the energy for Al-atom bulk-diffusion, indicating that the boundary motion may be governed by the grain boundary diffusion. While in the ∑27 tilt boundary, the activation energy for grain boundary migration is about 125kJ/mol, which agrees with the energy for Al-atom bulk-diffusion. Study of boundary structure observation by high resolution electron microscopy revealed that the grain boundary structure of ∑27 tilt boundary was consisted of edge dislocation array in which a space between dislocations was very short. It is considered that climb motion of the dislocations controlled to the motion of tilt boundaries consisted of edge dislocation array. From these results, it is concluded that the boundary motion of ∑27 tilt boundary may be governed by climb motion of their dislocations controlled by Al-atom bulk-diffusion.

Original languageEnglish
Pages (from-to)835-840
Number of pages6
JournalMaterials Science Forum
Volume467-470
Issue numberII
Publication statusPublished - Jan 1 2004
EventProceedings of the Second Joint International Conferences on Recrystallization and Grain Growth, ReX and GG2, SF2M - Annecy, France
Duration: Aug 30 2004Sep 3 2004

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Grain boundary migration of 〈110〉 tilt ∑11 and ∑21 boundaries in pure aluminum'. Together they form a unique fingerprint.

  • Cite this

    Yoshida, F., Uehara, M., Ikeda, K. I., Nakashima, H., & Abe, H. (2004). Grain boundary migration of 〈110〉 tilt ∑11 and ∑21 boundaries in pure aluminum. Materials Science Forum, 467-470(II), 835-840.