Stress Induced Migration of Symmetric Tilt Boundaries in Aluminum

• Fukutomi Hiroshi

  Institute of Space and Aeronautical Science, University of Tokyo

• Horiuchi Ryo

  Institute of Space and Aeronautical Science, University of Tokyo

抄録

Stress induced migration behavior of four kinds of symmetric tilt boundaries which are described as vertical arrays of a⁄2[1\bar10](111) ([11\bar2] tilted), a⁄2[1\bar10](001) ([110] tilted), a⁄2[11\bar2](111) ([1\bar10] tilted), and a[001](010) ([100] tilted) dislocations were investigated by the use of aluminum bicrystals.<BR>It was found that these four kinds of boundaries migrated under stress and produced plastic strain at high temperatures. The migration velocity, v varies with tensile stress, σ and temperature, T, as in the following equation:<BR>v=A(θ,ξ)σⁿexp(−Q⁄RT),<BR>where A(θ, ξ) is a numerical factor depending on the misorientation angle, θ, and the kind of grain boundary dislocations, ξ, n=1.0±0.2 and Q=80±5 kJ/mol when θ is larger than 5°.<BR>Instead of stress induced migration, grain boundary sliding occurred above certain misorientation angles and the transition angles depended on the kind of grain boundary dislocations.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 22 (9), 633-642, 1981

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390282680094622592
• NII論文ID: 130003485933
• DOI: 10.2320/matertrans1960.22.633
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/22/9/22_9_633/_pdf
• 本文言語コード: en
• データソース種別:
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