Alternative TitleEffect 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
Source Publication铸造
Other AbstractThe 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.
Keyword马氏体球墨铸铁 磨球 Cr 碳化物 硬度
Indexed ByCSCD
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Document Type期刊论文
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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.
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