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Investigation on tensile deformation behavior of compacted graphite iron based on cohesive damage model
Zhang, YY; Pang, JC; Shen, RL; Qiu, Y; Li, SX; Zhang, ZF; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
2018-01-24
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume713Pages:260-268
AbstractCompacted graphite iron (CGI) is a typical engineering material with double phases, of which graphite morphology largely determines its mechanical performances. Although microstructural effects have been widely investigated, quantitative relations between mechanical properties and microstructures are still limited. In this study, a micro-scale damage cohesive finite element model (CFEM) was reconstructed and identified based on the tensile properties and damage characteristics of CGI, and then the effects of graphite including distribution, size, volume fraction and morphology on tensile behaviors were investigated. The agreement of yield strength and fracture mechanism between experimental and simulation results shows that the developed methods, combining the digital image-based technique (DIT) and CFEM, can be used to simulate CGI effectively. Furthermore, the quantitative relations between yield strength and microstructures were established. It is found that graphite distribution and volume fraction affect the yield strength much more compared with graphite size and morphology. Specifically, interesting results were found that yield strength does not monotonically change with volume fraction and aspect ratio of graphite, but reaches a maximum value under an optimal graphite size, which is in contrast to the traditional results. The established quantitative relations between microstructures and tensile properties of cast alloys can be utilized to design and manufacture the metallic composite with optimal mechanical properties.; Compacted graphite iron (CGI) is a typical engineering material with double phases, of which graphite morphology largely determines its mechanical performances. Although microstructural effects have been widely investigated, quantitative relations between mechanical properties and microstructures are still limited. In this study, a micro-scale damage cohesive finite element model (CFEM) was reconstructed and identified based on the tensile properties and damage characteristics of CGI, and then the effects of graphite including distribution, size, volume fraction and morphology on tensile behaviors were investigated. The agreement of yield strength and fracture mechanism between experimental and simulation results shows that the developed methods, combining the digital image-based technique (DIT) and CFEM, can be used to simulate CGI effectively. Furthermore, the quantitative relations between yield strength and microstructures were established. It is found that graphite distribution and volume fraction affect the yield strength much more compared with graphite size and morphology. Specifically, interesting results were found that yield strength does not monotonically change with volume fraction and aspect ratio of graphite, but reaches a maximum value under an optimal graphite size, which is in contrast to the traditional results. The established quantitative relations between microstructures and tensile properties of cast alloys can be utilized to design and manufacture the metallic composite with optimal mechanical properties.
description.department[zhang, y. y. ; pang, j. c. ; qiu, y. ; li, s. x. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [shen, r. l.] harbin inst technol, sch astronaut, harbin 150001, heilongjiang, peoples r china ; [zhang, y. y.] shenyang univ, shenyang 110016, liaoning, peoples r china
KeywordRepresentative Volume Element Fiber-reinforced Composites 3d Woven Composites Strength Cast-iron X-ray Tomography Mechanical-properties Thermal-conductivity Quantitative Description Heterogeneous Materials Automatic-generation
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51331007]; General Project of Liaoning Education Department [L2015364]; Natural Science Foundation of Liaoning [20170520346]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79569
Collection中国科学院金属研究所
Corresponding AuthorPang, JC; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, YY,Pang, JC,Shen, RL,et al. Investigation on tensile deformation behavior of compacted graphite iron based on cohesive damage model[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,713:260-268.
APA Zhang, YY.,Pang, JC.,Shen, RL.,Qiu, Y.,Li, SX.,...&Zhang, ZF .(2018).Investigation on tensile deformation behavior of compacted graphite iron based on cohesive damage model.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,713,260-268.
MLA Zhang, YY,et al."Investigation on tensile deformation behavior of compacted graphite iron based on cohesive damage model".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 713(2018):260-268.
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