Effect of Si content on microstructure and mechanical properties of Al–Si–Mg alloys |
| |
| Affiliation: | 1. Brunel Centre for Advanced Solidification Technology (BCAST), Brunel University London, Uxbridge, Middlesex UB8 3PH, United Kingdom;2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China;1. Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Material Science and Engineering, Beihang University, Beijing 100191, China;2. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan;3. Center for Advanced Die Engineering and Technology, Gifu University, 1-1 Yanagido, Gifu City, Gifu 501-1193, Japan;1. Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China;2. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan;3. Center for Advanced Die Engineering and Technology, Gifu University, 1-1 Yanagido, Gifu City, Gifu 501-1193, Japan;1. Université du Québec a Chicoutimi, Québec, Canada;2. General Motors, Materials Engineering, 823 Joslyn Avenue, Pontiac, MI 48340, USA;3. Corporativo Nemak, S.A. DE C.V., P.O. Box 100, Garza Garcia, NL 66221, Mexico |
| |
| Abstract: | Microstructure and mechanical properties of as-cast and as-extruded Al–Si–Mg alloys with different Si content are investigated by tensile test, microstructure observation. High density of Si particles in the Al alloys can induce dynamic recrystallization during hot extrusion and it becomes more matured with an increase in the density of Si particles. The tensile strength of as-cast and as-extruded alloys can be improved with the increase of Si content and hot extrusion make the elongation of alloys increase dramatically. Considerable grain refining effect caused by recrystallization occurred during hot extrusion of S2 (equivalently commercial A356 alloy) and S3 (near eutectic alloy) alloys plays an important role in the improvement of elongation. A good combination of strength and elongation for the as-extruded S3 alloy indicates that near eutectic Al–Si alloys can be hot-extruded to produce aluminum profiles with high performance. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
