超微細結晶粒材料の作成と物性　　メカニカルアロイングしたＡｌ‐Ｔｉ‐Ｂ合金粉末の熱処理とその固化成形

• 河村 忠治

  武蔵工業大学工学部機械工学科

• 湯浅 栄二

  武蔵工業大学工学部機械工学科

• 田村 政臣

  武蔵工業大学大学院

書誌事項

タイトル別名

• Hest-treatment of Al-Ti-B Powder Prepared by the Mechanical Alloying and its Consolidation.
• メカニカルアロイング シタ Al-Ti-B ゴウキンフンマツ ノ ネツ ショリ ト ソノ コカ セイケイ

抄録

In order to obtain aluminum alloy powder which composes of α-Al phase super-saturated with titanium and boron, the titanium and boron powders were mixed with various amounts of molar ratio Ti/B=1/2, to aluminum powder and then the mixture was mechanically alloyed for 108ks. The alloy powder was heat-treated for various times at 723-873K in argon atmosphere. It was observed that the structural change of the alloy powder with the heat-treatment by XRD, SEM and EPMA. When the Al-10-20mass%(TiB) powder heat-treated at 700-800K for treating time up to 3.6ks, Al₃Ti, Al₅Ti₂ phases and diborid particles as TiB₂ and AlB₂ precipitate from the super-saturated α-Al phase, and these precipitates become to Al₃Ti and TiB₂ by the treating for long time. In the heat treatment at 873K for 3.6ks more than, Al₃Ti phase ceased to exist, and only TiB₂ existed in α-Al phase. The powder was consolidated at 873K for 5.4ks under various pressures. The Al-15-20mass%(Ti/B) alloys produced by the hot-pressing of about 300MPa become higher strength due to the precipitation-hardening and the dispersion of fine TiB₂ particles.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 46 (12), 1268-1273, 1999

  一般社団法人 粉体粉末冶金協会

キーワード

• mechanical alloying
• dispersion-strengthened aluminum alloy
• intermetallic ompound
• powder compact
• precipitation hardening

詳細情報

• CRID: 1390001206309399040
• NII論文ID: 10005741805
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.46.1268
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4942684
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4942684
• 本文言語コード: ja
• 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