首页|Investigation of Material Properties Based on 3D Graphite Morphology for Compacted Graphite Iron

Investigation of Material Properties Based on 3D Graphite Morphology for Compacted Graphite Iron

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The strength and thermal conductivity of compacted graphite iron(CGI)are crucial performance indicators in its engineering application.The presence of graphite in CGI significantly influences the two properties.In the previous studies,graphite in CGI was often described using two-dimensional(2D)morphology.In this study,the three-dimensional(3D)size,shape,and distribution of graphite in CGI were analyzed using X-ray tomography.Based on this,a new method is introduced to calculate the 3D vermicularity and compare it with the 2D vermicularity in terms of tensile properties and thermal conductivity.The results demonstrate that vermicular graphite exhibits greater connectivity in 3D observation compared to 2D observation.Therefore,the calculation method of 3D vermicularity is determined by considering the surface area and volume of the con-nected graphite.Then a linear relationship between 3 and 2D vermicularity has been observed.By comparing the correlation coefficient,it has been found that the 3D vermicularity offers a more accurate method to establish the relationship among graphite morphology,thermal conductivity and tensile property of CGI.

Compacted graphite iron3D graphite morphologyX-ray tomographyThermal conductivityTensile property

Chenglu Zou、Yan Zhao、Gang Zhu、Jianchao Pang、Shaogang Wang、Yangzhen Liu、Feng Liu、Shouxin Li、Zhefeng Zhang

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Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China

School of Mechanical Engineering,Liaoning Petrochemical University,Fushun 113001,China

Key Laboratory of Pressure Systems and Safety,Ministry of Education,School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China

Institute of Advance Wear and Corrosion Resistant and Functional Materials,Jinan University,Guangzhou 510632,China

Jihua Laboratory,Foshan 528200,China

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National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Guangdong Basic and Applied Basic Research Foundation

51871224521300022021A1515010890

2024

10.1007/s40195-024-01664-6

金属学报(英文版)
中国金属学会

金属学报(英文版)

CSTPCD
影响因子：0.77
ISSN：1006-7191
年,卷(期)：2024.37(6)