کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1623017 | 1516407 | 2009 | 4 صفحه PDF | دانلود رایگان |

AZ91 alloy powder with 2 mass% Si addition (flakes) was obtained by two-roller quenching equipment with an atomized accessory. The powders were consolidated and extruded into bar. The microstructures of the powders (flakes) and bars were characterized by optical microscope (OM), XRD, TEM and SEM. The results showed that the grain size of the powder were dendritic with the sizes of about 1–5 μm. The as-extruded alloy bars retain equiaxed grains with a large number of precipitated phases, i.e. Mg2Si, β-Al12Mg17 and AlMg2Zn. The alloy exhibits excellent mechanical properties. The 0.2% yield tensile strength, ultimate tensile strength and elongation of rupture were 322.47, 429.78 MPa and 6.4%, respectively. The as-extruded alloy bars show preferable elevated temperature mechanical properties.
Journal: Journal of Alloys and Compounds - Volume 470, Issues 1–2, 20 February 2009, Pages L17–L20