Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure
Al-Si-Cu-Mg cast (354) alloys are used in the automotive sector owing to their remarkable properties which are achievable after applying appropriate thermal treatments. Zirconium, Nickel, and Manganese were added to this category of Al-alloys to preserve good mechanical properties while being expose...
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MDPI AG
2022-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/8/2830 |
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| author | Mohamed H. Abdelaziz Agnes M. Samuel Herbert W. Doty Victor Songmene Fawzy H. Samuel |
| author_facet | Mohamed H. Abdelaziz Agnes M. Samuel Herbert W. Doty Victor Songmene Fawzy H. Samuel |
| author_sort | Mohamed H. Abdelaziz |
| collection | DOAJ |
| description | Al-Si-Cu-Mg cast (354) alloys are used in the automotive sector owing to their remarkable properties which are achievable after applying appropriate thermal treatments. Zirconium, Nickel, and Manganese were added to this category of Al-alloys to preserve good mechanical properties while being exposed to elevated temperatures for long times. The ultimate and yield strength values obtained at room temperature for the stabilized (thermally-exposed) T5-treated condition were comparable to those of the stabilized T6-treated condition, whereas the same properties for T5-treated alloys were higher than those of T6-treated ones for elevated-temperature tensile testing. Interestingly, the results showed that the addition of 0.75 wt.% Mn was competitive with the addition of 2 and 4 wt.% Ni with respect to the elevated-temperature and ambient temperature strength values, respectively. In addition, the Mn-containing alloy M3S exhibited improved ductility values at ambient temperature and at 250 °C, compared to the Ni-containing alloys. Examination of the fracture surface of tested samples revealed the advantageous role of sludge particles in enhancing the performance of Mn-containing alloys through their resistance to the propagation of cracks that developed in many intermetallic phases. This finding is considered to be economically significant in view of the lower price of manganese compared to that of nickel. |
| first_indexed | 2024-03-09T13:22:43Z |
| format | Article |
| id | doaj.art-c4497f014117431589c36ee404020dc4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T13:22:43Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c4497f014117431589c36ee404020dc42023-11-30T21:27:59ZengMDPI AGMaterials1996-19442022-04-01158283010.3390/ma15082830Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal ExposureMohamed H. Abdelaziz0Agnes M. Samuel1Herbert W. Doty2Victor Songmene3Fawzy H. Samuel4Département PEC, Université Française d’Égypte, Ville Shorouk, Cairo 11837, EgyptDépartement des Sciences Appliquées, Université du Québec à Chicoutimi, Chicoutimi, Saguenay, QC G7H 2B1, CanadaGeneral Motors Global Technology Center, Warren, MI 48093-2350, USADépartement de Génie Mécanique, École de Technologie Supérieure, Montreal, QC H3C 1K3, CanadaDépartement des Sciences Appliquées, Université du Québec à Chicoutimi, Chicoutimi, Saguenay, QC G7H 2B1, CanadaAl-Si-Cu-Mg cast (354) alloys are used in the automotive sector owing to their remarkable properties which are achievable after applying appropriate thermal treatments. Zirconium, Nickel, and Manganese were added to this category of Al-alloys to preserve good mechanical properties while being exposed to elevated temperatures for long times. The ultimate and yield strength values obtained at room temperature for the stabilized (thermally-exposed) T5-treated condition were comparable to those of the stabilized T6-treated condition, whereas the same properties for T5-treated alloys were higher than those of T6-treated ones for elevated-temperature tensile testing. Interestingly, the results showed that the addition of 0.75 wt.% Mn was competitive with the addition of 2 and 4 wt.% Ni with respect to the elevated-temperature and ambient temperature strength values, respectively. In addition, the Mn-containing alloy M3S exhibited improved ductility values at ambient temperature and at 250 °C, compared to the Ni-containing alloys. Examination of the fracture surface of tested samples revealed the advantageous role of sludge particles in enhancing the performance of Mn-containing alloys through their resistance to the propagation of cracks that developed in many intermetallic phases. This finding is considered to be economically significant in view of the lower price of manganese compared to that of nickel.https://www.mdpi.com/1996-1944/15/8/2830Al-Si-Cu-Mg alloythermal exposureheat treatmenttransition element additionsmechanical propertiesmicrostructure |
| spellingShingle | Mohamed H. Abdelaziz Agnes M. Samuel Herbert W. Doty Victor Songmene Fawzy H. Samuel Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure Materials Al-Si-Cu-Mg alloy thermal exposure heat treatment transition element additions mechanical properties microstructure |
| title | Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure |
| title_full | Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure |
| title_fullStr | Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure |
| title_full_unstemmed | Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure |
| title_short | Mechanical Performance and Precipitation Behavior in Al-Si-Cu-Mg Cast Alloys: Effect of Prolonged Thermal Exposure |
| title_sort | mechanical performance and precipitation behavior in al si cu mg cast alloys effect of prolonged thermal exposure |
| topic | Al-Si-Cu-Mg alloy thermal exposure heat treatment transition element additions mechanical properties microstructure |
| url | https://www.mdpi.com/1996-1944/15/8/2830 |
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