| 42 CrMoV紧固件用钢显微组织及夹杂物的分析 |
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| 引用本文： | 王刘涛,王海川,徐飞,李殿凯,范鼎东,张庆安,汪开忠,孙维.42 CrMoV紧固件用钢显微组织及夹杂物的分析[J].北京科技大学学报,2016(Z1):134-138. |
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| 作者姓名： | 王刘涛 王海川 徐飞 李殿凯 范鼎东 张庆安 汪开忠 孙维 |
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| 作者单位： | 1. 马钢集团埃斯科特钢有限公司,马鞍山,243001;2. 安徽工业大学冶金工程学院,马鞍山,243002;3. 安徽工业大学材料科学与工程学院,马鞍山,243002;4. 马鞍山钢铁股份有限公司特钢公司,马鞍山,243001 |
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| 摘 要： | 采用扫描电镜、扫描透射电子显微镜暗场成像、ASPEX 软件等研究分析42CrMoV 紧固件显微组织及夹杂物.42CrMoV紧固件基体组织为回火索氏体,基体组织仍保留着原来马氏体的形态,碳化物成排地在晶内和板条边界析出,并且晶界明显多于晶内析出；显微硬度HV0.2为330,奥氏体晶粒度(等级)为9级；夹杂物主要类型为MnS夹杂以及与MnS和CAS有关的复合夹杂物,主要夹杂物尺寸小于5μm,A、B、C、D和Ds夹杂物的等级基本都小于等于0.5级.
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| 关 键 词： | 高强度紧固件 显微组织 晶粒度 夹杂物 |
Analysis research on microstructure and inclusions of 42 CrMoV bolt |
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| WANG Liu-tao,WANG Hai-chuan,XU Fei,LI Dian-kai,FAN Ding-dong,ZHANG Qing-an,WANG Kai-zhong,SUN Wei.Analysis research on microstructure and inclusions of 42 CrMoV bolt[J].Journal of University of Science and Technology Beijing,2016(Z1):134-138. |
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| Authors: | WANG Liu-tao WANG Hai-chuan XU Fei LI Dian-kai FAN Ding-dong ZHANG Qing-an WANG Kai-zhong SUN Wei |
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| Abstract: | The microscopic structures and inclusion in 42CrMoV bolt were investigated by SEM,STEM and software ASPEX. The results show that the matrix structure of 42CrMoV bolt is tempered sorbite, but still retains the original morphology of martensite. Car-bides precipitate and arrange orderly in intracrystalline and lath boundaries, and the amount of precipitated carbides in grain bounda-ries are more than that in intracrystalline. Besides, the micro-hardness HV0. 2 is 330 and the grain size (level) of austenitic is 9. The MnS and aluminate are the main inclusion types in 42CrMoV bolt, and the size of inclusions are mostly less than 5μm, the level of A, B, C, D and Ds inclusion was basically less than or equal to Level 0. 5. |
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| Keywords: | high strength bolt microscopic structure grain size inclusion |
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