| 淬火20CrNi2Mo低碳钢中大角度晶界对强度的影响 |
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| 引用本文： | 卢叶茂,梁益龙,龙绍檑,杨明,尹存宏. 淬火20CrNi2Mo低碳钢中大角度晶界对强度的影响[J]. 材料导报, 2018, 32(24): 4339-4345, 4369 |
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| 作者姓名： | 卢叶茂 梁益龙 龙绍檑 杨明 尹存宏 |
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| 作者单位： | 贵州大学材料与冶金学院,贵阳 550025;贵州省材料结构与强度重点实验室,贵阳 550025,贵州大学材料与冶金学院,贵阳 550025;贵州省材料结构与强度重点实验室,贵阳 550025,贵州大学材料与冶金学院,贵阳 550025;贵州省材料结构与强度重点实验室,贵阳 550025,贵州大学材料与冶金学院,贵阳 550025;贵州省材料结构与强度重点实验室,贵阳 550025,贵州省材料结构与强度重点实验室,贵阳 550025 |
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| 基金项目： | 国家自然科学基金(51461006) |
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| 摘 要： | 采用OM、SEM、EBSD和TEM对20CrNi2Mo钢的微观组织进行定量表征,同时讨论了位错强化(σd)、固溶强化(σss)、析出强化(σd)和晶界强化(σg) 对试验钢强度的贡献,且利用经典的Hall-Petch关系分析了强度的有效控制单元。结果表明:随淬火温度的升高,试验钢的原奥氏体晶粒(dr)和马氏体束(d0)、块(db)等均增大,马氏体板条略微细化。同时,试验钢的强度随淬火温度的升高而降低,塑性增加；量化的四种强化方式中σd、σss 基本不变,σd忽略不计,试验钢的强度变化主要取决于σg。此外,试验钢的强度与多层次组织间的Hall-Petch关系揭示了块是强度的有效控制单元。
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| 关 键 词： | 20CrNi2Mo钢 马氏体 多层次结构 大角度晶界 有效控制单元 |
Effect of the High Angle Boundaries on Strength for 20CrNi2Mo Steel |
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| LU Yemao,LIANG Yilong,LONG Shaolei,YANG Ming and YIN Cunhong. Effect of the High Angle Boundaries on Strength for 20CrNi2Mo Steel[J]. Materials Review, 2018, 32(24): 4339-4345, 4369 |
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| Authors: | LU Yemao LIANG Yilong LONG Shaolei YANG Ming YIN Cunhong |
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| Affiliation: | College of Materials Science and Metallurgical Engineering, Guizhou University, Guiyang 550025;Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials, Guiyang 550025,College of Materials Science and Metallurgical Engineering, Guizhou University, Guiyang 550025;Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials, Guiyang 550025,College of Materials Science and Metallurgical Engineering, Guizhou University, Guiyang 550025;Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials, Guiyang 550025,College of Materials Science and Metallurgical Engineering, Guizhou University, Guiyang 550025;Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials, Guiyang 550025 and Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials, Guiyang 550025 |
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| Abstract: | |
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| Keywords: | 20CrNi2Mo steel martensite multi-level microstructure high angle boundaries effective control unit |
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