Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel
查看参考文献19篇
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文摘
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In order to understand the effect of Mo element on the high-temperature fatigue behavior of 15CrNbTi ferritic stainless steel, the stress-controlled fatigue tests have been performed for both 15CrNbTi and 15Cr0.5MoNbTi ferritic stainless steels at 800 ℃ in laboratory air. The fatigue test results indicate that the fatigue resistance of 15Cr0.5MoNbTi steel is manifestly higher than that of 15CrNbTi steel at the maximum stress below 57 MPa; the 15Cr0.5MoNbTi steel possesses a fatigue limit of 35 MPa, which is higher than that of 15CrNbTi steel. The TEM observations reveal that the Mo element can suppress the formation of coarsened Fe_3Nb_3C precipitates and result in the fatigue resistance enhancement. The dislocation networks formed during the cyclic load favor to improve the fatigue resistance of 15Cr0.5MoNbTi steel at 800 ℃. |
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来源
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Acta Metallurgica Sinica(English Letters)
,2014,27(3):452-456 【核心库】
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DOI
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10.1007/s40195-014-0064-0
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关键词
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Ferritic stainless steel
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High-temperature fatigue
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Mo
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Microstructure
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地址
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1.
School of Materials Science & Engineering, Shenyang University of Technology, Shenyang, 110870
2.
Baosteel Group, State Key Laboratory of Development and Application Technology of Automobile Steels, Shanghai, 201900
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1006-7191 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:5198094
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