Liu Yawei, Liqiang Gong, Dong Minqi, Zhengyang Chen, Tounan Jin, Wenhang Yin, Hanguang Fu
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引用次数: 0
Abstract
This article investigates the effect of N content on the microstructure, mechanical properties and wear resistance of hypereutectic high chromium cast iron (HHCCI). With the increase of N content, the primary carbides are obviously refined, the austenite content increases, and the dispersed granular Cr2N precipitates. After quenching at 1000 °C, secondary carbides are precipitated from the matrix, the matrix transforms into martensite + retained austenite. With the increase of N content, the corrosion resistance of HHCCI increases, and 0.3 wt.% N HHCCI shows the best corrosion resistance. With the increase of N content, the wear resistance of HHCCI increases. The wear resistance of HHCCI with 0.15 wt.% N is the best, which is 1.57 times that of HHCCI without N.
本文研究了氮含量对超共晶高铬铸铁（HHCCI）的显微组织、力学性能和耐磨性的影响。随着 N 含量的增加，一次碳化物明显细化，奥氏体含量增加，并析出分散的粒状 Cr2N。1000 °C 淬火后，二次碳化物从基体中析出，基体转变为马氏体+残余奥氏体。随着 N 含量的增加，HHCCI 的耐腐蚀性增强，0.3 wt.% N HHCCI 的耐腐蚀性最好。随着 N 含量的增加，HHCCI 的耐磨性也随之增加。含 0.15 wt.% N 的 HHCCI 的耐磨性最好，是不含 N 的 HHCCI 的 1.57 倍。
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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