二相ステンレス鋼の耐キャビテーション壊食性

概要

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Cavitation erosion resistance was studied for duplex stainless steels (DP33, DP37 and DP38) and super duplex stainless steels (DP40 and DP42) using a vibratory apparatus in distilled water and seawater. In comparison with the effect of the difference of the component element content on cavitation erosion resistance, following facts were clarified. Cavitation erosion resistance of the duplex stainless steels and the super duplex stainless steels in the distilled water and P.I. value which showed the corrosion-resistance did not show the good correlation. Cavitation erosion resistance in distilled water and seawater showed the good correlation with Vickers microhardness (HV) which was obtained from the ratio of ferrite phase to austenite phase and each hardness by a composite rule, and the cavitation erosion resistance are improved when the hardness increases.
一般社団法人日本機械学会の論文
2008-04-25