スモールパンチ試験法による9Cr鋼ボイラ配管のクリープ特性評価

書誌事項

タイトル別名
  • Creep Property Assessment of 9Cr Steel Boiler Piping by Small Punch Test
  • スモールパンチ シケンホウ ニ ヨル 9Crコウ ボイラ ハイカン ノ クリープ トクセイ ヒョウカ

この論文をさがす

抄録

<p>The small punch (SP) creep testing technique was applied to five heats of Gr.91 steel, which had been actually used for boiler pipings in the different USC power plants for long periods of time. As a result, it was found that the difference in creep strength between the heats, that is, the heat-to-heat variation, was well reflected in the SP creep property. In addition, the conventional SP test was carried out at room temperature and 650°C to obtain the load/stress conversion coefficient (F/σ) which is necessary for the conversion of SP creep rupture data to the uniaxial ones. The F/σ for each heat was estimated by the displacement to maximum load (um) using the correlation of F/σ = um h0/0.320. The experimental results revealed that the F/σ showed no significant change and it was 2.4-2.5 irrespective of heats. It was also found that the SP creep rupture data were relatively well converted to the uniaxial one with those coefficients.</p>

収録刊行物

  • 材料

    材料 70 (2), 125-132, 2021-02-15

    公益社団法人 日本材料学会

被引用文献 (3)*注記

もっと見る

参考文献 (2)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ