高圧鋳造凝固部材中の微小空隙の生成挙動と機械的性質に及ぼす溶湯水素量の影響

• 吉田 誠

  広島大学工学部

• 瀧 圭司

  広島大学大学院

• 福永 秀春

  広島大学工学部

書誌事項

タイトル別名

• Effect of hydrogen in molten aluminum on the growth of micro-porosity and mechanical properties of squeeze cast material.
• コウアツ チュウゾウ ギョウコ ブザイ チュウ ノ ビショウ クウゲキ ノ セイセイ キョドウ ト キカイテキ セイシツ ニ オヨボス ヨウトウ スイソリョウ ノ エイキョウ

抄録

For automobile or other machine parts, the squeeze cast aluminum alloys have been used because of its lower defects compared to the conventional die cast aluminum alloys. The effect of the hydrogen in molten aluminum alloys on the growth of the micro-porosity and mechanical properties of the squeeze cast aluminum alloys were investigated. After controlling the hydrogen content, the molten alloy was cast into a cavity with 90 MPa. In the case of hydrogen-added material, the number density of the micro-porosities increased during solid-solution treatment regardless of the type of the alloys, AC4CH, AC8A or ADC12. On the other hand, porosity was scarcely found in the degased materials. Therefore, the formation of porosity is likely to be caused by the release of the supersaturated hydrogen to the α-aluminum phase during heat treatment. As to the as-cast AC4CH material, the fracture elongation was increased with addition of hydrogen. However the tensile strength of the as-cast or T6 material was little affected by the hydrogen content.

収録刊行物

• 軽金属

  軽金属 50 (7), 325-329, 2000

  一般社団法人 軽金属学会

キーワード

• aluminum alloy
• squeeze casting
• hydrogen
• micro-porosity
• heat treatment
• tensile strength

詳細情報

• CRID: 1390001206335778432
• NII論文ID: 10004549297
• NII論文ID: 30026902531
• NII書誌ID: AN00069773
• DOI: 10.2464/jilm.50.325
• COI: 1:CAS:528:DC%2BD3cXlt1OhsL4%3D
• ISSN: 18808018
• ISSN: 04515994
• ISSN: http://id.crossref.org/issn/04515994
• NDL書誌ID: 5411635
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5411635
• 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