Grain refinement of AZ91D magnesium alloy by MgCO3
The grain refining technique of AZ91D magnesium alloy by MgCO3 has been investigated. The refining mechanism and tensile properties of the resulting alloy have also been discussed. The results indicate that MgCO3 can decrease its grain size from 311 to 53µm. Correspondingly, the tensile properties a...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2011-03-01
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Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100021 |
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doaj-d8fe435ed9dc401aad3e63f6fbc32a922020-11-24T22:51:16ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392011-03-01141124133Grain refinement of AZ91D magnesium alloy by MgCO3Ti Jun ChenXiang Dong JiangYing MaRui Quan WangYuan HaoThe grain refining technique of AZ91D magnesium alloy by MgCO3 has been investigated. The refining mechanism and tensile properties of the resulting alloy have also been discussed. The results indicate that MgCO3 can decrease its grain size from 311 to 53µm. Correspondingly, the tensile properties are obviously improved. The higher the cooling rate from addition temperature to pouring temperature or the higher the addition temperature, the finer the grains. The melt treated by MgCO3 should be poured as soon as possible because the inoculation fading is quite quick. The microstructure sensitivity to the diameter of a cast rod is relatively high and the microstructures of the rods with large diameters are quite inhomogeneous. The refining mechanism of MgCO3 belongs to heterogeneous nucleation and the nucleant substrates are believed to be the Al4C3 particles formed from the reactions between the MgCO3 and the molten alloy.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100021AZ91D magnesium alloygrain refinementMgCO3microstructure |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ti Jun Chen Xiang Dong Jiang Ying Ma Rui Quan Wang Yuan Hao |
spellingShingle |
Ti Jun Chen Xiang Dong Jiang Ying Ma Rui Quan Wang Yuan Hao Grain refinement of AZ91D magnesium alloy by MgCO3 Materials Research AZ91D magnesium alloy grain refinement MgCO3 microstructure |
author_facet |
Ti Jun Chen Xiang Dong Jiang Ying Ma Rui Quan Wang Yuan Hao |
author_sort |
Ti Jun Chen |
title |
Grain refinement of AZ91D magnesium alloy by MgCO3 |
title_short |
Grain refinement of AZ91D magnesium alloy by MgCO3 |
title_full |
Grain refinement of AZ91D magnesium alloy by MgCO3 |
title_fullStr |
Grain refinement of AZ91D magnesium alloy by MgCO3 |
title_full_unstemmed |
Grain refinement of AZ91D magnesium alloy by MgCO3 |
title_sort |
grain refinement of az91d magnesium alloy by mgco3 |
publisher |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
series |
Materials Research |
issn |
1516-1439 |
publishDate |
2011-03-01 |
description |
The grain refining technique of AZ91D magnesium alloy by MgCO3 has been investigated. The refining mechanism and tensile properties of the resulting alloy have also been discussed. The results indicate that MgCO3 can decrease its grain size from 311 to 53µm. Correspondingly, the tensile properties are obviously improved. The higher the cooling rate from addition temperature to pouring temperature or the higher the addition temperature, the finer the grains. The melt treated by MgCO3 should be poured as soon as possible because the inoculation fading is quite quick. The microstructure sensitivity to the diameter of a cast rod is relatively high and the microstructures of the rods with large diameters are quite inhomogeneous. The refining mechanism of MgCO3 belongs to heterogeneous nucleation and the nucleant substrates are believed to be the Al4C3 particles formed from the reactions between the MgCO3 and the molten alloy. |
topic |
AZ91D magnesium alloy grain refinement MgCO3 microstructure |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100021 |
work_keys_str_mv |
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1725670548757807104 |