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On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels
Qian GA(钱桂安); Lei WS; Niffenegger M; Gonzalez-Albuixech VF
Source PublicationPHILOSOPHICAL MAGAZINE
2018-02-06
Volume98Issue:11Pages:959-1004
ISSN1478-6435
AbstractThe work relates to the effect of temperature on the model parameters in local approaches (LAs) to cleavage fracture. According to a recently developed LA model, the physical consensus of plastic deformation being a prerequisite to cleavage fracture enforces any LA model of cleavage fracture to observe initial yielding of a volume element as its threshold stress state to incur cleavage fracture in addition to the conventional practice of confining the fracture process zone within the plastic deformation zone. The physical consistency of the new LA model to the basic LA methodology and the differences between the new LA model and other existing models are interpreted. Then this new LA model is adopted to investigate the temperature dependence of LA model parameters using circumferentially notched round tensile specimens. With the published strength data as input, finite element (FE) calculation is conducted for elastic-perfectly plastic deformation and the realistic elastic-plastic hardening, respectively, to provide stress distributions for model calibration. The calibration results in temperature independent model parameters. This leads to the establishment of a master curve' characteristic to synchronise the correlation between the nominal strength and the corresponding cleavage fracture probability at different temperatures. This master curve' behaviour is verified by strength data from three different steels, providing a new path to calculate cleavage fracture probability with significantly reduced FE efforts.
KeywordFerritic steels plastic yielding cleavage fracture statistical model temperature effect model calibration
DOI10.1080/14786435.2018.1425011
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000426138800003
WOS KeywordPRESSURIZED THERMAL SHOCKS ; LOCAL APPROACH ; BRITTLE-FRACTURE ; STRUCTURAL-STEELS ; PART I ; TRANSGRANULAR CLEAVAGE ; MICROALLOYED STEELS ; MASTER CURVE ; INITIATION ; TOUGHNESS
WOS Research AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS SubjectMaterials Science ; Metallurgy & Metallurgical Engineering ; Physics
Funding OrganizationPROBAB Project by the Swiss Federal Nuclear Safety Inspectorate (ENSI) (DIS-Vertrag) [H-100668]
Classification二类
Ranking1
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77959
Collection非线性力学国家重点实验室
Affiliation1.[Qian, Guian; Niffenegger, M.] Paul Scherrer Inst, Nucl Energy & Safety Dept, Lab Nucl Mat, Villigen, Switzerland
2.Appl Mat Inc, Sunnyvale, CA USA
3.Gonzalez-Albuixech, V. F.] Univ Politecn Valencia, CIIM, Valencia, Spain
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Qian GA,Lei WS,Niffenegger M,et al. On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels[J]. PHILOSOPHICAL MAGAZINE,2018,98(11):959-1004.
APA 钱桂安,Lei WS,Niffenegger M,&Gonzalez-Albuixech VF.(2018).On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels.PHILOSOPHICAL MAGAZINE,98(11),959-1004.
MLA 钱桂安,et al."On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels".PHILOSOPHICAL MAGAZINE 98.11(2018):959-1004.
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