動的直接観察測定法（ＭＩＳＯ法）による溶接凝固割れ現象の解明　ＩＩＩ　　凝固割れ発生時の限界歪に及ぼす歪速度の影響

• 松田 福久

  大阪大学溶接工学研究所

• 中川 博二

  大阪大学溶接工学研究所

• 冨田 正吾

  大阪大学大学院

書誌事項

タイトル別名

• Investigation on weld solidification cracking by MISO technique. (Report III). Effect of strain rate on critical strain required for initiation of solidification crack.
• Investigation on Weld Solidification Cracking by MISO Technique (Report III)
• 動的直接観察測定法(MISO法)による溶接凝固割れ現象の解明(第3報)

抄録

The condition for occurrence of weld solidification cracking is analyzed in relation to strain rate by direct observation technique MISO for plain carbon steels, stainless steels and an Inconel alloy. All the materials used show a dependence of critical strain required for crack initiation on strain rate. Namely, the critical strain increases with an increase in strain rate. The dependence becomes bigger with a decrease in crack susceptibility. Therefore, the critical strain in a high strain rate is more likely to differentiate the crack susceptibilities among materials than in a low strain rate. On the other hand, the strain rate in Houldcroft-type cracking test and in case of some welding fabrications is shown to be so low that the difference of the critical strain among materials is little. Under such low strain rate, the critical strain rate below which the crack can not occur is useful for the comparison of crack susceptibilities.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 7 (1), 100-105, 1989

  一般社団法人 溶接学会

キーワード

• Solidification
• Hot Cracking
• Carbon steels
• Stainless steel
• GTA Welding

詳細情報

• CRID: 1390001204725237120
• NII論文ID: 130003764839
• DOI: 10.2207/qjjws.7.100
• ISSN: 24348252
• ISSN: 02884771
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可