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国外文献 > 1.轴承 > 3. 材料与制造 > 轴承材料


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标 题: Analysis of Spherical Carbides Formed in Chromium Added Hypereutectoid Bearing Steels
铬添加超共析轴承钢中形成的球状碳化物分析
作 者: A. Yamamoto
K. Inoue
H. Tsubakino
关键词: Bearing steel  [轴承钢]
Spherodized carbide  [ 球化硬质合金]
Characterization  [ 特性分析]
Transmission electron microscopy  [ 透射电子显微镜]
出版年: 2007
文集名: THERMEC 2006
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会议名: 5th International Conference on Processing & Manufacturing of Advanced Materials, Part 5
第五届先进材料加工与制造国际会议,第五部分
届 次: 5th
摘 要: Microstructures in a bearing steel, JIS SUJ2, have been observed and analyzed in detail by means of transmission electron microscope and synchrotron radiation diffraction in SPring-8. Spherodized carbides in the steel are generally recognized as spherical cementite particles, but some of them have been clearly shown to be M{sub}23C{sub}6 type of carbide in this study. The shapes and sizes of these two types of carbides are similar to each other. On the martensitic matrix of the steel, it is believed to be stable at relatively low temperature, but it is also shown to be decomposed to form cementite by prolonged aging at 383 K, which provides a reason for decrease in hardness in standard hardness blocks, previously reported by the authors.

在SPring-8同步辐射X射线衍射和透射电子显微镜的辅助下,对轴承钢JIS SUJ2中的微观结构进行了详细观察与分析。该钢中球化碳化物通常被认为是球状渗碳体颗粒,但本研究明确表明其中部分为M₂₂₃CC₆型碳化物。这两种碳化物的形状和尺寸相似。在钢的马氏体基体上,这类碳化物在相对较低温度下被认为较为稳定,但经383 K长时间老化后会分解生成渗碳体,这解释了作者此前报道的标准硬度块硬度下降的原因。
中文内容为网络AI翻译,专业术语未必准确,仅供参考。

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