Cr对马氏体球墨铸铁磨球组织和性能的影响

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	Cr对马氏体球墨铸铁磨球组织和性能的影响
其他题名	Effect of Elemental Cr on Microstructure and Properties of Martensitic Ductile Iron Grinding Ball
	胡小锋 1; 闫德胜 1; 喻传宏 2; 覃照成 2; 戎利建 1
	2017
发表期刊	铸造
ISSN	1001-4977
卷号	66.0 期号:006 页码:598-602
摘要	摘要：研究了两种不同Cr含量的马氏体球墨铸铁磨球（Ф110mm）内外层微观组织和硬度。结果显示，磨球的表层组织以马氏体和石墨球为主，不含Cr的磨球心部组织以片层状的珠光体为主，还有石墨和少量铁素体；加入0．4％Cr后，磨球心部以马氏体为主，含一定数量的碳化物。硬度测试结果表明不含Cr磨球外层硬度约HRC50，心部硬度仅HRC30，内外层硬度相差HRC20；加cr后因引入了碳化物，外层硬度提高到HR59，而内外层硬度差仅HRC3。与高铬铸铁磨球相比，含Cr的马氏体球墨铸铁磨球具有较好的综合性能，在较大冲击环境下具有更好的应用前景。
其他摘要	The microstructure and hardness for a martensitic ductile iron grinding ball （Ф110mm） with two different Cr content was investigated. The results shown that in surface layer of grinding ball there are mainly martensite and graphite. However, in spite of graphite and a small amount of ferrite there consist of mainly lamellar pearlite in core region for grinding ball without Cr content. After addition of 0.4% Cr, the core of grinding ball is mainly composed of martensite and contain a small amount of carbides. Hardness test results show that the hardness of the surface layer ofnon-Cr grinding ball is about HRC50 and the hardness of core is HRC30, which implies that the difference between surface and core hardness is HRC20. After addition of Cr, the surface hardness of grinding ball increases to HRC59 and the difference between surface and core hardness is only HRC3. Compared with high chromium casting iron grinding ball, the Cr-containing martensitic ductile iron grinding ball has better comprehensive performance and has better application prospect in the larger impact environment.
关键词	马氏体球墨铸铁磨球 Cr 碳化物硬度
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6030387
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/158062
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.安徽省宁国诚信耐磨材料有限公司
推荐引用方式 GB/T 7714	胡小锋,闫德胜,喻传宏,等. Cr对马氏体球墨铸铁磨球组织和性能的影响[J]. 铸造,2017,66.0(006):598-602.
APA	胡小锋,闫德胜,喻传宏,覃照成,&戎利建.(2017).Cr对马氏体球墨铸铁磨球组织和性能的影响.铸造,66.0(006),598-602.
MLA	胡小锋,et al."Cr对马氏体球墨铸铁磨球组织和性能的影响".铸造 66.0.006(2017):598-602.