Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy
In order to improve the performances of the Al-Mg-Si-Cu-Cr-V alloy, various amounts of Mn (0-0.9wt.%) were added. The effect of this Mn on the microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloys in different states, especially after hot extrution and solid solution treatment, was sy...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Foundry Journal Agency
2012-11-01
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| Series: | China Foundry |
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| Online Access: | http://www.foundryworld.com/uploadfile/2012121054357417.pdf |
| _version_ | 1818346737063952384 |
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| author | Zhao Zhihao Meng Yi Cui Jianzhong |
| author_facet | Zhao Zhihao Meng Yi Cui Jianzhong |
| author_sort | Zhao Zhihao |
| collection | DOAJ |
| description | In order to improve the performances of the Al-Mg-Si-Cu-Cr-V alloy, various amounts of Mn (0-0.9wt.%) were added. The effect of this Mn on the microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloys in different states, especially after hot extrution and solid solution treatment, was systematically studied using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and mechanical tests at room temperature. The results show that 0.2wt.% Mn can both refine the as-cast microstructure of the alloy and strengthen the extrusion+T6 state alloy without damaging the plasticity badly due to the formation of Al15(FeMn)3Si2 and Al15Mn3Si2 dispersoids. Compared with the extrusion+T6 state alloy without Mn addition, the ultimate tensile strength and yield strength of the alloy with 0.2wt.% Mn addition are increased from 416.9 MPa to 431.4 MPa, 360.8 MPa to 372 MPa, respectively. The elongation of the extrusion+T6 state alloy does not show obvious change when the Mn addition is less than 0.5wt.%, and for the alloy with 0.2wt.% Mn addition its elongation is still as high as 15.6%. However, when over 0.7wt.% Mn is added to the alloy, some coarse, stable and refractory AlVMn and Al(VMn)Si phases form. These coarse phases can reduce the effect of Mn on the inhibition of re-crystallization; and they retain the angular morphology permanently after the subsequent deformation process and heat treatment. This damages the mechanical properties of the alloy. |
| first_indexed | 2024-12-13T17:23:01Z |
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| institution | Directory Open Access Journal |
| issn | 1672-6421 |
| language | English |
| last_indexed | 2024-12-13T17:23:01Z |
| publishDate | 2012-11-01 |
| publisher | Foundry Journal Agency |
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| series | China Foundry |
| spelling | doaj.art-fb7f7c7e6c144d18ae7af4cda9beb2592022-12-21T23:37:16ZengFoundry Journal AgencyChina Foundry1672-64212012-11-0194349355Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloyZhao ZhihaoMeng YiCui JianzhongIn order to improve the performances of the Al-Mg-Si-Cu-Cr-V alloy, various amounts of Mn (0-0.9wt.%) were added. The effect of this Mn on the microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloys in different states, especially after hot extrution and solid solution treatment, was systematically studied using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and mechanical tests at room temperature. The results show that 0.2wt.% Mn can both refine the as-cast microstructure of the alloy and strengthen the extrusion+T6 state alloy without damaging the plasticity badly due to the formation of Al15(FeMn)3Si2 and Al15Mn3Si2 dispersoids. Compared with the extrusion+T6 state alloy without Mn addition, the ultimate tensile strength and yield strength of the alloy with 0.2wt.% Mn addition are increased from 416.9 MPa to 431.4 MPa, 360.8 MPa to 372 MPa, respectively. The elongation of the extrusion+T6 state alloy does not show obvious change when the Mn addition is less than 0.5wt.%, and for the alloy with 0.2wt.% Mn addition its elongation is still as high as 15.6%. However, when over 0.7wt.% Mn is added to the alloy, some coarse, stable and refractory AlVMn and Al(VMn)Si phases form. These coarse phases can reduce the effect of Mn on the inhibition of re-crystallization; and they retain the angular morphology permanently after the subsequent deformation process and heat treatment. This damages the mechanical properties of the alloy.http://www.foundryworld.com/uploadfile/2012121054357417.pdfAl-Mg-Si-Cu-Cr-V alloyMn contentmicrostructuremechanical properties |
| spellingShingle | Zhao Zhihao Meng Yi Cui Jianzhong Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy China Foundry Al-Mg-Si-Cu-Cr-V alloy Mn content microstructure mechanical properties |
| title | Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy |
| title_full | Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy |
| title_fullStr | Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy |
| title_full_unstemmed | Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy |
| title_short | Effect of Mn on microstructures and mechanical properties of Al-Mg-Si-Cu-Cr-V alloy |
| title_sort | effect of mn on microstructures and mechanical properties of al mg si cu cr v alloy |
| topic | Al-Mg-Si-Cu-Cr-V alloy Mn content microstructure mechanical properties |
| url | http://www.foundryworld.com/uploadfile/2012121054357417.pdf |
| work_keys_str_mv | AT zhaozhihao effectofmnonmicrostructuresandmechanicalpropertiesofalmgsicucrvalloy AT mengyi effectofmnonmicrostructuresandmechanicalpropertiesofalmgsicucrvalloy AT cuijianzhong effectofmnonmicrostructuresandmechanicalpropertiesofalmgsicucrvalloy |