QQ客服 官方微博 反馈留言

	Microstructure and mechanical properties of high boron white cast iron
	Liu, Zhongli ; Li, Yanxiang ; Chen, Xiang ; Hu, Kaihua
	2010-05-10 ; 2010-05-10
关键词	white cast iron boride wear-resistant material ABRASION RESISTANCE FRACTURE-TOUGHNESS ALLOYS STEELS Nanoscience & Nanotechnology Materials Science, Multidisciplinary
中文摘要	In this paper, high boron white cast iron, a new kind of wear-resistant white cast iron was developed, and its microstructure and mechanical properties were studied. The results indicate that the high boron white cast iron comprises a dendritic matrix and an interdendritic eutectic boride in as-cast condition. The distribution of eutectic boride with a chemical formula of M2B (M represents Cr, Fe or Mn) and with a microhardness of HV2010 is much like that of carbide in high chromium white cast iron. The matrix includes martensite and a small amount of pearlite. After quenching in air, the matrix changes to martensite, but the morphology of boride remains almost unchanged. In the course of austenitizing, a secondary precipitation with the size of about 1 mu m appears, but when tempered at different temperature, another secondary precipitation with the size of several tens of nanometers is found. Both secondary precipitations, which all forms by means of equilibrium segregation of boron, have a chemical formula of M-23(C,B)(6). Compared with high chromium white cast iron, the hardness of high boron white cast iron is almost similar, but the toughness is increased a lot, which attributes to the change of matrix from high carbon martensite in the high chromium white cast iron to low carbon martensite in the high boron white cast iron. Moreover, the high boron white cast iron has a good hardenability. (C) 2007 Elsevier BN. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE SA ; LAUSANNE ; PO BOX 564, 1001 LAUSANNE, SWITZERLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24229]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Zhongli,Li, Yanxiang,Chen, Xiang,et al. Microstructure and mechanical properties of high boron white cast iron[J],2010, 2010.
APA	Liu, Zhongli,Li, Yanxiang,Chen, Xiang,&Hu, Kaihua.(2010).Microstructure and mechanical properties of high boron white cast iron..
MLA	Liu, Zhongli,et al."Microstructure and mechanical properties of high boron white cast iron".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。