Application of high pressure gas jet mill process to fabricate high performance pure titanium

• Ota Mie

  Research Organization of Science and Technology, Ritsumeikan University

• Vajpai Sanjay Kumar

  Research Organization of Science and Technology, Ritsumeikan University

• Imao Ryota

  Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University

• Kurokawa Kazuaki

  Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University

• Ameyama Kei

  Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University

書誌事項

タイトル別名

• Application of High Pressure Gas Jet Mill Process to Fabricate High Performance Harmonic Structure Designed Pure Titanium

抄録

Through many years, conventional material developments have emphasized on microstructural refinement and homogeneity. However, “Nano- and Homogeneous” microstructures do not, usually, satisfy the need to be both strong and ductile, due to the plastic instability in the early stage of the deformation. As opposed to such a “nano- and homo-”microstructure design, we have proposed “Harmonic Structure” design. The harmonic structure has a heterogeneous microstructure consisting of bimodal grain size together with a controlled and specific topological distribution of fine and coarse grains. In other words, the harmonic structure is heterogeneous on micro- but homogeneous on macro-scales. In the present work, the harmonic structure design has been applied to pure-Ti via a novel powder metallurgy route consisting of controlled severe plastic deformation of the fine-sized powder particles via jet milling and subsequent consolidation by SPS. At a macro-scale, the harmonic structure materials exhibited significantly better combination of strength and ductility, under quasi-static tensile loadings, as compared to their homogeneous microstructure counterparts.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 56 (1), 154-159, 2015

  公益社団法人 日本金属学会

キーワード

• harmonic structure
• pure titanium
• severe plastic deformation
• powder metallurgy
• jet mill
• mechanical properties
• strength
• ductility
• absorbed energy
• heterogeneous

詳細情報

• CRID: 1390282679229429120
• NII論文ID: 40020319036
• NII論文ID: 130004704644
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2014280
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 026014235
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026014235
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/56/1/56_M2014280/_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