Fracture behaviors and characteristics of WC/NiCrMo steel matrix composites

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	Fracture behaviors and characteristics of WC/NiCrMo steel matrix composites
	Yang, Ruicheng; Chen, Kui; Wang, Kaixuan; Lu, Xuefei
刊名	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
	2005-06-01
卷号	22 期号:3 页码:130-134
关键词	Fracture toughness Hardness Quenching Scanning electron microscopy Steel Tempering Tungsten carbide Hard phase Single edge notched beam (SENB) Valence electron structure
ISSN号	10003851
英文摘要	The fracture behaviors and fractographic features of WC/NiCrMo steel matrix composites under 12 kinds of conditions, after austenization between 960-1040°C then quenching and tempering, were investigated using single edge notched beam (SENB) method, SEM and electron theory analysis. The results show that the material has high strength (σbb-2200 MPa, σbc-3000 MPa) and hardness (HRC 62-68), and higher fracture toughness (∼30 MPa·m1/2). The main fractographic appearances are WC cleavage, quasi-cleavage of matrix, dispersed dimples and dimple bands. The numerous hard phases of WC(∼40%) play a dominant role in fracture toughness and fracture behavior, and based on the alloy electron theory, both of the containing carbon structure units with high bond strength and α-Fe(Ni) structure units with more lattice electron in matrix contribute to the strong-tough support to the hard phases and lead to micro-ductility during fracture.
语种	中文
出版者	Beijing University of Aeronautics and Astronautics (BUAA)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112245]
专题	兰州理工大学
作者单位	Lab. of Advanced Non-Ferrous Materials, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Yang, Ruicheng,Chen, Kui,Wang, Kaixuan,et al. Fracture behaviors and characteristics of WC/NiCrMo steel matrix composites[J]. Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,2005,22(3):130-134.
APA	Yang, Ruicheng,Chen, Kui,Wang, Kaixuan,&Lu, Xuefei.(2005).Fracture behaviors and characteristics of WC/NiCrMo steel matrix composites.Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,22(3),130-134.
MLA	Yang, Ruicheng,et al."Fracture behaviors and characteristics of WC/NiCrMo steel matrix composites".Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica 22.3(2005):130-134.