A grain refinement mechanism of cast commercial purity aluminium by vanadium
نویسندگان
چکیده
Grain refinement of cast commercial purity aluminium by vanadium and the underlying mechanism have been investigated. Addition 0.3 wt% 0.4 leads to columnar equiaxed transition average grain sizes are refined around 196 ?m 154 ?m, respectively. Pro-peritectic equilibrium Al10V particles identified near centres. These either octahedron or plate morphology with bound planes belonging {111} crystallographic planes. Three orientation relationships also determined between grains. Crystallographic analysis based on experimental indicates that relatively high nucleation potency for solid aluminium. Calculation free growth undercooling size distribution reveals large facilitates initiation grains these particles. Moreover, it is found level added provides sufficient restriction effect in melt as quantified its factor. All three factors, i.e., particles, adequate solute work concert achieve observed Al-V alloys.
منابع مشابه
Grain Refinement Efficiency in Commercial-Purity Aluminum Influenced by the Addition of Al-4Ti Master Alloys with Varying TiAl3 Particles
A series of Al-4Ti master alloys with various TiAl₃ particles were prepared via pouring the pure aluminum added with K₂TiF₆ or sponge titanium into three different molds made of graphite, copper, and sand. The microstructure and morphology of TiAl₃ particles were characterized and analyzed by scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS). The microstructure of TiA...
متن کاملMagnificent Grain Refinement of Al-Mg2Si Composite by Hot Rolling
The effect of chemical composition and the hot rolling operations on the microstructure and mechanical properties of in situ aluminum matrix composite with Mg2Si phase as the reinforcement was studied. It was revealed that the modification by phosphorous results in the rounder (more spherical) primary and secondary (eutectic) magnesium silicide intermetallics. During hot rolling, the primary pa...
متن کاملPerformance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum
Three types of Al-5Ti master alloys were synthesized by a method of thermal explosion reaction in pure molten aluminum. Performance comparison of Al-5Ti master alloy in grain refinement of commercial purity Al with different additions (0.6%, 1.0%, 1.6%, 2.0%, and 3.0%) and holding time (10, 30, 60 and 120 min) were investigated. The results show that Al-5Ti master alloy with blocky TiAl₃ partic...
متن کاملEffects of Homogenization Conditions and Hot Rolling Parameters on Grain Refinement of an As-Cast 301 Stainless Steel
In this work, effects of homogenization time of 3 to 13 h at 1200 °C on the grain refinement of as-cast AISI 301 stainless steel after different hot rolling conditions were investigated. The results showed that the minimum grain size of 16±7 mm was achieved when homogenization took place at 1200 °C for 9 h followed by hot rolling at temperature range of 1000–1200 °C with strain of 0.8 and stra...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materials Characterization
سال: 2021
ISSN: ['1044-5803', '1873-4189']
DOI: https://doi.org/10.1016/j.matchar.2021.111468