| Nb微合金化对Cr-Ni-Mo渗碳齿轮钢组织和性能的影响 |
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| 引用本文： | 桂伟民,刘义,周根树,何亮亮,王梦梦,汤文馨.Nb微合金化对Cr-Ni-Mo渗碳齿轮钢组织和性能的影响[J].金属热处理,2021,46(1):114-119. |
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| 作者姓名： | 桂伟民 刘义 周根树 何亮亮 王梦梦 汤文馨 |
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| 作者单位： | 1.陕西法士特齿轮有限责任公司,陕西 西安 710119; 2.西安交通大学 材料科学与工程学院,陕西 西安 710049 |
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| 摘 要： | 研究Nb元素对Cr-Ni-Mo系合金在不同渗碳热处理工艺下组织和性能的影响。结果表明,不同渗碳工艺下Nb元素对表面硬度及表面残留奥氏体含量、非马组织影响不大。但是,通过Nb元素细化晶粒的试验钢,在较长的渗碳工艺下能使得有效硬化层深加深10%且获得更细的表层马氏体片层组织。
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| 关 键 词： | 微合金化 Nb元素 渗碳热处理 微观组织 性能 |
| 收稿时间： | 2020-06-26 |
Effect of Nb microalloying on microstructure and properties of Cr-Ni-Mo carburized gear steel |
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| Gui Weimin,Liu Yi,Zhou Genshu,He Liangliang,Wang Mengmeng,Tang Wenxin.Effect of Nb microalloying on microstructure and properties of Cr-Ni-Mo carburized gear steel[J].Heat Treatment of Metals,2021,46(1):114-119. |
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| Authors: | Gui Weimin Liu Yi Zhou Genshu He Liangliang Wang Mengmeng Tang Wenxin |
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| Affiliation: | 1. Shaanxi Fast Gear Co.,Ltd.,Xi'an Shaanxi 710119,China; 2. School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an Shaanxi 710049,China |
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| Abstract: | Effect of Nb on microstructure and properties of Cr-Ni-Mo alloyed gear steel under different carburizing processes was investigated.The results show that Nb element has little influence on surface hardness,retained austenite content and non-martensite microstructure in the carburizing layer under different carburizing processes.However,the test steel with Nb element refining grain can make the effective hardening depth deepen by 10%and obtain a finer surface lamellar structure of lath martensite after a longer carburizing process. |
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| Keywords: | microalloying Nb element carburizing heat treatment microstructure properties |
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