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Influences of Super-Gravity Field on Aluminum Grain Refining
Zhao, Lixin2,3; Guo, Zhancheng1; Wang, Zhi4; Wang, Mingyong4; Guo, ZC
2010-03-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN1073-5623
Volume41AIssue:3Pages:670-675
AbstractThe influence of a super-gravity field on metal grain refining has been mainly investigated using industrial pure aluminum as an example. The relationship between the super-gravity field (gravity coefficient of less than 1000) and the grain size in the equiaxed crystal zone was studied, and the corresponding mechanism for grain refining was discussed in detail. The effect of the super-gravity field on grain refining was remarkable, and the relationship could be well fitted by the second-decreasing-exponential function. For aluminum, the grain size decreased rapidly as the gravity coefficient increased from 1 to 250, and then remained nearly unchanged from 250 to 1000. Under the experimental conditions, the main mechanism was that the fragments of dendritic grains-generated by super-gravity-acted as the nucleation sites and resulted in grain refining. Further, the change of nucleation Gibbs free energy, directly caused by super-gravity, was not remarkable enough to refine the grains, which could be suggested by the stable freezing points under different super-gravity fields.
KeywordCentrifugal Casting Method Microstructures Gravity Al
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11661-009-0130-9
Indexed BySCI
Language英语
WOS KeywordCENTRIFUGAL CASTING METHOD ; MICROSTRUCTURES ; GRAVITY ; AL
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000274687200019
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6207
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorGuo, ZC
Affiliation1.Univ Sci & Technol Beijing, Key Lab Ecol & Recycle Met, Beijing 100083, Peoples R China
2.Chinese Acad Sci, China Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
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Zhao, Lixin,Guo, Zhancheng,Wang, Zhi,et al. Influences of Super-Gravity Field on Aluminum Grain Refining[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2010,41A(3):670-675.
APA Zhao, Lixin,Guo, Zhancheng,Wang, Zhi,Wang, Mingyong,&Guo, ZC.(2010).Influences of Super-Gravity Field on Aluminum Grain Refining.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,41A(3),670-675.
MLA Zhao, Lixin,et al."Influences of Super-Gravity Field on Aluminum Grain Refining".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 41A.3(2010):670-675.
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