Effect of Hot Working on Creep Rupture Properties of PM Ni-base Alloy Consolidated by Hot Extrusion.

• Isomoto Tatsuro

  Graduate School, Osaka University

• Nagai Hiroshi

  Department of Material Science and Engineering, Osaka University

書誌事項

タイトル別名

• Effect of Hot Working on Creep Rupture

抄録

Effects of hot working on elevated temperature tensile and creep rupture properties at 1000°C were investigated in powder metallurgy(PM) Ni-base alloy, Alloy X, with 50 ppm oxygen content consolidated by hot extrusion process in comparison with cast and wrought materials. It was found that the ductility of PM material at temperatures above 850°C was improved by the application of hot forging while the tensile strength was relatively unchanged. Furthermore, it was found that creep rupture properties of PM materials were not significantly affected by extrusion ratio ranging from 6 to 25, but improved by hot forging. Although aluminum oxides originating from powder surface oxidation during atomization aligned along grain boundaries in the extruded material, these oxides were redistributed within grains by nonuniform deformation of hot forging. It was considered that the improvement of creep rupture properties was realized by a decrease in cavity formation initiated at oxides at grain boundaries.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 43 (5), 663-668, 1996

  一般社団法人 粉体粉末冶金協会

キーワード

• powder metallurgy
• Alloy X
• hot extrusion
• hot forging
• creep rupture strength
• oxide

詳細情報

• CRID: 1390282681284220160
• NII論文ID: 10002012302
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.43.663
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 3967178
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3967178
• 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