Cyclic Deformation and Development of Dislocation Structures in a Centrifugally Cast Al-Al3Ti of Functionally Graded Material

• Yamashita Ken

  Tokyo Institute of Technology, Department of Materials Science and Engineering

• Watanabe Chihiro

  Tokyo Institute of Technology, Department of Materials Science and Engineering

• Kumai Shinji

  Tokyo Institute of Technology, Department of Materials Science and Engineering

• Kato Masaharu

  Tokyo Institute of Technology, Department of Materials Science and Engineering

• Sato Akikazu

  Tokyo Institute of Technology, Department of Materials Science and Engineering

• Watanabe Yoshimi

  Shinshu University, Department of Functional Machinery and Mechanics

書誌事項

タイトル別名

• Cyclic Deformation and Development of Dislocation Structures in a Centrifugally Cast Al–Al<SUB>3</SUB>Ti of Functionally Graded Material
• Cyclic Deformation and Development of Dislocation Structures in a Centrifugally Cast Al&ndash;Al<SUB>3</SUB>Ti of Functionally Graded Material

抄録

An Al–Al₃Ti composite has been prepared to contain a large volume fraction of D0₂₂ ordered Al₃Ti phase on one side and a smaller volume fraction on the other side by a functional grading process. The cyclic stress-strain curves obtained by strain control tests are compared with the available data on Al to delineate the effects of the Al₃Ti plates distributed with concentration gradient. Examination of the crack nucleation and growth by a replica method has revealed that introduction of the non-deformable Al₃Ti accelerates crack nucleation but concurrently hinders the spontaneous propagation in the cyclic tests. Observation of the final structure by HVEM has further revealed that presence of the non-deformable Al₃Ti induces non-uniform distribution of dislocations near the Al₃Ti plate, causing build-up of stress inhomogeneity, especially on the Al₃Ti rich side. On the basis of these observations, utility of the FGM specimens is discussed with a particular interest in the lifetime prediction under cyclic loading.

収録刊行物

• Materials Transactions, JIM

  Materials Transactions, JIM 41 (10), 1322-1328, 2000

  社団法人 日本金属学会

キーワード

• functionally graded material (FGM)
• fatigue
• Al–Al<SUB>3</SUB>Ti interface
• high voltage electron microscope
• compatibility
• crack nucleation
• crack propagation
• D0<SUB>22</SUB>

詳細情報

• CRID: 1390282679225161088
• NII論文ID: 10005353701
• NII書誌ID: AA10699969
• DOI: 10.2320/matertrans1989.41.1322
• COI: 1:CAS:528:DC%2BD3cXovFahurk%3D
• ISSN: 2432471X
• ISSN: 09161821
• NDL書誌ID: 5554483
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5554483
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1989/41/10/41_10_1322/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可