时效温度对00Cr12Ni10MoTi马氏体时效不锈钢组织与性能的影响
Effect ofAgingTemperature on Microstructure and Properties of 00Cr12Ni10MoTi Maraging Stainless Steel
查看参考文献21篇
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文摘
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使用X射线衍射(XRD)、扫描电镜(SEM)、电子背散射衍射(EBSD)、透射电镜(TEM)和拉伸和冲击实验等手段,研究了时效温度对00Cr12Ni10MoTi马氏体时效不锈钢的组织和力学性能的影响。结果表明:随着时效温度的升高,实验钢的强度逐渐提高,析出强化效应明显增强。在500℃时效后基体中析出大量棒状Ni_3Ti,实验钢的强度达到峰值。随着时效温度的升高,实验钢的室温和低温冲击韧性衰减,在400℃时效后低温(-196℃)冲击功出现最低值51 J。时效温度升高到500℃后,实验钢的冲击韧性回升,因为马氏体基体中生成的逆转变奥氏体抑制了裂纹萌生并缓解其扩展。在500℃时效产生了Ni_3Ti析出强化效应和逆变奥氏体韧化效应,使实验钢具有良好的强韧性匹配。 |
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其他语种文摘
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The effect of aging temperature on the microstructure and mechanical properties of 00Cr12Ni10MoTi maraging stainless steel was investigated by means of X-ray diffractometer (XRD),scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy(TEM), tensile tester and impact tester. The results show that the strength increases gradually with the increase of aging temperature, through the enhanced precipitation strengthening. A large amount of rod-like Ni_3Ti precipitated on the matrix when aged at 500℃, which leads the strength of the steel to the peak value. The impact toughness at room temperature and low temperature decreases with the increase of aging temperature, and the lowest impact energy at low temperature (-196℃)is 51 J for the steel aged at 400℃, while the impact toughness of the steel increases again when aging temperature continues rising to 500℃, which is related to the formation of reversed austenite in martensite matrix. The existence of austenite phase can effectively inhibit crack initiation and relieve its propagation. Aging at 500℃ can effectively exert the precipitation strengthening effect of Ni_3Ti and the toughening effect of reversed austenite, achieving better matching of strength and toughness. |
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来源
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材料研究学报
,2019,33(11):815-823 【核心库】
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DOI
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10.11901/1005.3093.2019.151
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关键词
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金属材料
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00Cr12Ni10MoTi
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微观组织
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时效强化
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Ni_3Ti
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逆变奥氏体
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地址
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1.
中国科学院金属研究所, 沈阳材料科学国家研究中心, 沈阳, 110016
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中国科学技术大学材料科学与工程学院, 沈阳, 110016
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中国空气动力研究与发展中心, 绵阳, 621000
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燕山大学机械工程学院, 秦皇岛, 066004
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语种
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中文 |
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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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1005-3093 |
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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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国家重点研发计划
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国家自然科学基金
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中国科学院创新交叉团队项目
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文献收藏号
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CSCD:6617557
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