IMECH-IR  > 力学所知识产出(1956-2008)
Effect of Rare Earth Additions on Fracture Properties of 2.25Cr-1Mo Steels
Hong YS(洪友士)1; Tyson WR2; Faucher B2
Source PublicationActa Metallurgica Sinica
1989
Volume2Pages:63-68
ISSN1000-9442
Abstract
The inclusion parameters,fracture surface morphology and void growth characteristics of ten- sile and fracture toughness specimens of 2.25Cr-1Mo steels with and without rare-earth (RE)additions have been investigated by quantitative metaltography(QTM),scanning elec- tron microscopy(SEM)and energy dispersive spectroscopy(EDS).There is a substantially higher density of inclusions in the RE-treated steel,which has lower values of fracture proper- ties including critical values of COD and J integral(δ_c and J_(IC)),fracture strain(ε_f) and Charpy V-notch energy(CVN).The fracture surface of the RE-treated steel comprises equiaxed dimples of diameters comparable with its inclusion spacing,whereas for the non-RE-treated steels,a wide range of dimple sizes is found with average diameter much smaller than the corresponding inclusion spacing.The investigation indicates that the lower values of fracture properties for the steel with RE at room temperature may be ascribed to its large content of RE-containing inclusions.
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Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/55028
Collection力学所知识产出(1956-2008)
Affiliation1.State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences
2.Physical Metallurgy Research Laboratories, CANMET
Recommended Citation
GB/T 7714
Hong YS,Tyson WR,Faucher B. Effect of Rare Earth Additions on Fracture Properties of 2.25Cr-1Mo Steels[J]. Acta Metallurgica Sinica,1989,2:63-68
APA Hong YS,Tyson WR,&Faucher B.(1989).Effect of Rare Earth Additions on Fracture Properties of 2.25Cr-1Mo Steels.Acta Metallurgica Sinica,2,63-68.
MLA Hong YS,et al."Effect of Rare Earth Additions on Fracture Properties of 2.25Cr-1Mo Steels".Acta Metallurgica Sinica 2(1989):63-68.
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