炭素鋼同種摩擦圧接継手の腐食疲労強度について

• 大植義夫

  大阪産業大学短期大学部

• 中山 英明

  大阪産業大学短期大学部

• 向井 喜彦

  大阪大学工学部

• 小川 恒一

  大阪府立大学総合科学部

書誌事項

タイトル別名

• On Corrosion Fatigue of Friction Welded Butt Joint Composed of Similar Low Carbon Steel

抄録

Friction welded butt joints have come into wider use as structural members and machine elements such as propellor shaft and engine value of automobile structure, cutting tool, motor shaft and so forth. Friction welded butt joints have opposite aspects in their mechanical properties : Low absorbed energy in Charpy impact test and high joint efficiency under both monotonic tensile and fatigue load conditions. Furthermore, recent study on the fracture toughness of the joint revealed that the joint possessed sufficiently high toughness value for practical applications despite of its low Charpy impact energy. But, it is also clarified that the scatter of fatigue distribution of the joint is larger than that of the parent material. Therefore, it is an important problem to clarify main factors controlling the fatigue strength and fatigue life distribution from the viewpoint of reliability design engineering. And, the corrosion fatigue behavior of the joint is also an urgent problem to be solved, because some of the joint elements are practically used in corrosive environments. In order to clarify the corrosion fatigue behavior of the friction welded butt joint composed of similar carbon steel, JIS S25C/JIS S25C, a series of rotating bending fatigue tests was carried out in ordinary atmospheric environment and in artificial seawater. Results of the study indicated that the fatigue strength of the joint at 10^7 stress cycles in artificial seawater was almost the same as that of the base material, and the evaluation of fatigue life distribution on Weibull probability paper showed that, in artificial seawater, the scatter of fatigue life distribution for the joint is smaller that that for the base metal. Above mentioned corrosion fatigue characteristics of the joint can be discussed reasonably on the bases of the corrosion pits generated on the notch root area of the joint specimen.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 10 (2), 301-, 1992

  社団法人溶接学会

キーワード

• Friction welded butt joint
• Corrosion pit
• Residual stress
• Fatigue strength
• Joint efficiency
• Weibull probability

詳細情報

• CRID: 1573105977206116864
• NII論文ID: 110003423154
• NII書誌ID: AN1005067X
• ISSN: 02884771
• 本文言語コード: ja
• データソース種別:
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