| 2Cr13钢调质后奥氏体粗晶遗传及其对性能的影响 |
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| 引用本文： | 安运铮,常儒,周一平.2Cr13钢调质后奥氏体粗晶遗传及其对性能的影响[J].西安理工大学学报,1986(1). |
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| 作者姓名： | 安运铮 常儒 周一平 |
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| 作者单位： | 陕西机械学院金属材料工程系，陕西机械学院金属材料工程系，北京重型电机厂 |
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| 摘 要： | 本文对汽轮机末级叶片钢2Cr13粗晶马氏体在重新加热淬火后的粗晶遗传现象进行了研究,观察了在奥氏体化时恒温形成的动力学和组织结构。讨论了在相变区的加热速度、奥氏体化温度及保温时间对奥氏体晶粒的影响。研究表明,调质后粗晶奥氏体的遗传现象,是由于沿原奥氏体晶界碳化物偏聚析出的结果。还讨论了奥氏体晶粒度对调质后力学性能的影响,扫描及透射电镜观察结果表明,调质后的力学性能,主要取决于钢中碳化物的分布及尺寸。
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| 关 键 词： | 2Cr13钢 组织遗传 奥氏体粗晶 性能 |
STRUCTURE INHERITANCE OF PRIOR COARSE AUSTENITE AND ITS INFLUENCE ON THE MECHANICAL PROPERTIES IN 2Cr 13 STEEL |
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| An Yunzheng Chang Ru Zhou Yiping.STRUCTURE INHERITANCE OF PRIOR COARSE AUSTENITE AND ITS INFLUENCE ON THE MECHANICAL PROPERTIES IN 2Cr 13 STEEL[J].Journal of Xi'an University of Technology,1986(1). |
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| Authors: | An Yunzheng Chang Ru Zhou Yiping |
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| Institution: | An Yunzheng Chang Ru Zhou Yiping |
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| Abstract: | This paper studies the inheritance phenomenon of coarse martensitic stainless steel 2Cr 13 used for stage turbine blade, which are obtained after afresh heating. During austenitizing, the kinetics of isothermal transformation and structure are investigated. The influence of the rate of heating at phase transformation region, temperature of austenitizing and holding time on the austenite grains are studied. This paper shows that inheritance phenomenon of coarse austenite grains are due to the boundary segregation of carbide along the prior austenite grain boundary. The effect of austenite grains on the mechanical properties after quenching and tempering are determined. Observation by SEM and TEM illustrate that the strength and toughness are depended upon the sizes and distribution of carbide particles. |
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| Keywords: | 2Cr 13 Steel Structure Inheritance Coarse Austenite Mechanical Property |
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