Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics
The present work was performed on Al–Si–Mg–Cu and Al–Si–Mg alloys containing measured amounts of Ni (0.4 wt% and 4 wt%), Bi (1.0 wt%), Ca (0.5 wt%), Sr (0.015 wt%), 10 vol%SiC(p), and 20 vol%SiC(p). After solutionizing treatment, tensile bars (ASTM B108) were aged in the temperature range of 155 °C–...
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2025-07-01
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| author | H.W. Doty J. Hernandez-Sandoval H.R. Ammar V. Songmene F.H. Samuel |
| author_facet | H.W. Doty J. Hernandez-Sandoval H.R. Ammar V. Songmene F.H. Samuel |
| author_sort | H.W. Doty |
| collection | DOAJ |
| description | The present work was performed on Al–Si–Mg–Cu and Al–Si–Mg alloys containing measured amounts of Ni (0.4 wt% and 4 wt%), Bi (1.0 wt%), Ca (0.5 wt%), Sr (0.015 wt%), 10 vol%SiC(p), and 20 vol%SiC(p). After solutionizing treatment, tensile bars (ASTM B108) were aged in the temperature range of 155 °C–350 °C for up to 100 h. The results of 700 tensile bars show that although the value of E is the Σ = E1+E2+ E3 +----, where E is a function of interparticle spacing and particle volume fraction of each type of precipitate, E can not be determined using a simple empirical formula due to interference of other factors such as porosity, inclusions, particle/matrix surface reaction, and precision of measuring each of the involved parameters. Considering alloying elements, the addition of a sufficient amount of Ni (Ni/Cu > 1), in the T6 condition, produces the highest E value, about 92 GPa (Al2Cu, Al3Ni, Al3NiCu precipitates). Modification of the eutectic Si particles has a moderate improvement in E about precipitation hardening (about 12 %). The highest E value was obtained using metal matrix composites (359 alloy + 20 vol% SiC(p)) in the T6 condition, approximately 42 % improvement over that achieved using the base alloy, at 110 GPa. |
| format | Article |
| id | doaj-art-43ccd84aec3d4192806fb6c5ea645c24 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-43ccd84aec3d4192806fb6c5ea645c242025-08-20T03:33:36ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01373549356210.1016/j.jmrt.2025.06.186Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallicsH.W. Doty0J. Hernandez-Sandoval1H.R. Ammar2V. Songmene3F.H. Samuel4Materials Technology, General Motors Global Technology Center, Warren, MI, 48092, USAFacultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, MéxicoDepartment of Mechanical Engineering, College of Engineering, Qassim University, Buraydah, 51452, Saudi ArabiaDepartment of Mechanical Engineering, École de Technologie Supérieure, Montreal, CanadaUniversité du Québec à Chicoutimi, Québec, Canada; Corresponding author.The present work was performed on Al–Si–Mg–Cu and Al–Si–Mg alloys containing measured amounts of Ni (0.4 wt% and 4 wt%), Bi (1.0 wt%), Ca (0.5 wt%), Sr (0.015 wt%), 10 vol%SiC(p), and 20 vol%SiC(p). After solutionizing treatment, tensile bars (ASTM B108) were aged in the temperature range of 155 °C–350 °C for up to 100 h. The results of 700 tensile bars show that although the value of E is the Σ = E1+E2+ E3 +----, where E is a function of interparticle spacing and particle volume fraction of each type of precipitate, E can not be determined using a simple empirical formula due to interference of other factors such as porosity, inclusions, particle/matrix surface reaction, and precision of measuring each of the involved parameters. Considering alloying elements, the addition of a sufficient amount of Ni (Ni/Cu > 1), in the T6 condition, produces the highest E value, about 92 GPa (Al2Cu, Al3Ni, Al3NiCu precipitates). Modification of the eutectic Si particles has a moderate improvement in E about precipitation hardening (about 12 %). The highest E value was obtained using metal matrix composites (359 alloy + 20 vol% SiC(p)) in the T6 condition, approximately 42 % improvement over that achieved using the base alloy, at 110 GPa.http://www.sciencedirect.com/science/article/pii/S2238785425016084Aluminum alloysYoung's modulusMetal matrix compositesTensile testing |
| spellingShingle | H.W. Doty J. Hernandez-Sandoval H.R. Ammar V. Songmene F.H. Samuel Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics Journal of Materials Research and Technology Aluminum alloys Young's modulus Metal matrix composites Tensile testing |
| title | Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics |
| title_full | Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics |
| title_fullStr | Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics |
| title_full_unstemmed | Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics |
| title_short | Determination of Young's modulus in aluminum alloys: Role of precipitates, dispersoids, and intermetallics |
| title_sort | determination of young s modulus in aluminum alloys role of precipitates dispersoids and intermetallics |
| topic | Aluminum alloys Young's modulus Metal matrix composites Tensile testing |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425016084 |
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