ステンレス鋼オーバレイ溶接部の水素分布 : はく離抵抗性のすぐれたステンレス鋼オーバレイ溶接法に関する研究(第6報)

書誌事項

タイトル別名
  • Hydrogen Distribution of Stainless Overlay Weld : Study on a Stainless Steel Overlay Welding Process for Superior Resistance to Disbonding (Report 6)

この論文をさがす

抄録

The first layer ovrelay weld metal with austenitic/martensitic duplex microstructure provides the overlay welds with better resistance to the hydrogen-induced disbonding than that with the conventional austenitic microstructure containing several percents ferrite as previously reported. The resistance to the hydrogen-induced disbonding occurring at the bond of the stainless steel overlay weld is strongly affected by the hydrogen concentration at the bond region. Based on this consideration, the hydrogen distribution in through-thichness direction of the disbonding resistant overlay weld was studied and compared with that of the conventional overlay weld. The main results obtained in this study are as follows.(1) The hydrogen contents in the first layer overlay weld metals adjacent to the bond of the conventional and disbonding resistant overlay welds were 25.6 and 16.5 ppm, respectively, at steady state operating condition.(2) The hydrogen content in the first layer overlay weld metal adjacent to the bond of the conventional overlay weld increased after shut down of operating condition. On the other hand, that of the disbonding resistant overlay welds scarcely increased.(3) The maximun hydrogen content of the conventional overlay weld described in (2) was 36.5 ppm at 3.24×10^4 seconds after shut down of operation. That of the disbonding resistant overlay weld was 17.9 ppm at 3.6×10^4 seconds.(4) The lower hydrogen content after shut down of operating condition described in (3) provides the overlay weld with good resistance to the hydrogen-induced disbonding.

収録刊行物

被引用文献 (2)*注記

もっと見る

詳細情報

  • CRID
    1570854177392635264
  • NII論文ID
    110003422792
  • NII書誌ID
    AN1005067X
  • ISSN
    02884771
  • 本文言語コード
    ja
  • データソース種別
    • CiNii Articles

問題の指摘

ページトップへ