Nb、Ti和C含量對在超高臨界壓力下使用的高強度奧氏體鋼持久斷裂強度的影響
INFLUENCES OF Nb, Ti AND C CONTENTS ON CREEP RUPTURE STRENGTH OF HIGH STRENGTH AUSTENITIC STEEL USED UNDER SUPER HIGH CRITICAL PRESSURE
-
摘要: 用于超高臨界壓力鍋爐的20Cr-25Ni系奧氏體鋼,要求在高溫高壓下具有高的持久斷裂強度。本文研究了Nb、Ti和C添加量對20Cr-25Ni系奧氏體鋼持久斷裂強度的影響和在該成分下鋼的金相組織,并進(jìn)行了Nb、Ti和C最佳含量分析。Abstract: The 20Cr-25Ni austenitic steel used for super high critical pressure boilers must have high creep rupture strength under high temperature and high pressure. The paper studied the influence of additions of Nb, Ti and C on creep rupture strength of 20Cr-25Ni austenitic steel and metallographic structures of the steel with such contents, and it also analysed the optimum contents of Nb, Ti anb C.
下載: