IMECH-IR  > 非线性力学国家重点实验室
Effect of thermophysical property and coating thickness on microstructure and characteristics of a casting
Cheng AC; Jia BL; Guo RF; Ren XP(任秀平); Xuan HB; Zhou TT; Zhou, TT (reprint author), Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
Source PublicationCHINA FOUNDRY
2017
Volume14Issue:1Pages:46-54
ISSN1672-6421
AbstractA new improved investment casting technology (IC) has been presented and compared with the existing IC technology such as lost foam casting (LFC). The effect of thermophysical property and coating thickness on casting solidification temperature field microstructure and hardness has been investigated. The results show that the solidification rate decreases inversely with the coating thickness when the coating contains silica sol zircon powder mullite powder and defoaming agent. In contrast the solid cooling rate increases as the coating thickness increases. However the solidification rate and solid cooling rate of the casting produced by the existing IC and the improved IC are very similar when the coating thickness is 5 mm so the microstructure and hardness of a container corner fitting produced by the improved IC and the existing IC are similar. The linear regression equation for the grain size (d) and cooling rate (v) of the castings is d=-0.41v+206.1. The linear regression equation for the content of pearlite (w) and solid cooling rate (t) is w=1.79t+6.71. The new improved IC can greatly simplify the process and decrease the cost of production compared with the existing IC. Contrasting with LFC container corner fittings produced by the new improved IC have fewer defects and better properties. It was also found that the desired microstructure and properties can be obtained by changing the thermophysical property and thickness of the coating.
KeywordImproved Investment Casting Thermophysical Property Coating Thickness Microstructure Property
DOI10.1007/s41230-017-6085-3
Indexed BySCI
Language英语
WOS IDWOS:000397064300008
WOS KeywordINTERFACIAL HEAT-TRANSFER ; MECHANICAL-PROPERTIES ; DIMENSIONAL ACCURACY ; OPERATIONS-RESEARCH ; FOAM ; MOLD ; PERMEABILITY ; PATTERNS ; ALUMINUM ; VACUUM
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
DepartmentLNM先进材料的跨尺度力学行为
ClassificationQ4
Ranking4
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60594
Collection非线性力学国家重点实验室
Corresponding AuthorZhou, TT (reprint author), Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
Recommended Citation
GB/T 7714
Cheng AC,Jia BL,Guo RF,et al. Effect of thermophysical property and coating thickness on microstructure and characteristics of a casting[J]. CHINA FOUNDRY,2017,14(1):46-54.
APA Cheng AC.,Jia BL.,Guo RF.,任秀平.,Xuan HB.,...&Zhou, TT .(2017).Effect of thermophysical property and coating thickness on microstructure and characteristics of a casting.CHINA FOUNDRY,14(1),46-54.
MLA Cheng AC,et al."Effect of thermophysical property and coating thickness on microstructure and characteristics of a casting".CHINA FOUNDRY 14.1(2017):46-54.
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