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The influence of electric current pulses on the microstructure of magnesium alloy AZ91D
Yang, YS; Zhou, Q; Hu, ZQ
Corresponding AuthorYang, YS(ysyang@imr.ac.cn)
2005
Source PublicationMAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS
ISSN0255-5476
Volume488-489Pages:201-204
AbstractThe microstructure evolution of magnesium alloy AZ91D solidified with different electric current pulses and cooling rates was investigated and a new method, Low-voltage Electric Current Pulses (LVECP), to produce semi-slurry magnesium alloy was developed in this paper. The experimental results showed that the electric current pulses during solidification changed morphology of dendrites and the equiaxed, non-dendritic grains formed. The size of the primary alpha-Mg particles in semi-solid AZ91D alloy and the sphericity of the particles decreased with increase of discharging the voltage and treating time of LVECP. The increase of the cooling rate during the solidification of AZ91D alloy with LVECP promoted the formation of finer a-Mg particles, but the value of the sphericity of the particles rised. The formation of equiaxed, nondendritic structure by LVECP might be attributed to the electric current pulses increase the nucleation rate, restrained growth of the dendrites, and made dendrite arms remelted during the solidification of AZ91D alloy.
Keywordnon-dendritic structure solidification semi-solid slurry electric current pulse
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000230390900045
PublisherTRANS TECH PUBLICATIONS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82073
Corresponding AuthorYang, YS
AffiliationChinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yang, YS,Zhou, Q,Hu, ZQ. The influence of electric current pulses on the microstructure of magnesium alloy AZ91D[J]. MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS,2005,488-489:201-204.
APA Yang, YS,Zhou, Q,&Hu, ZQ.(2005).The influence of electric current pulses on the microstructure of magnesium alloy AZ91D.MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS,488-489,201-204.
MLA Yang, YS,et al."The influence of electric current pulses on the microstructure of magnesium alloy AZ91D".MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS 488-489(2005):201-204.
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