Evaluation of Al-Ti-C Master Alloys as Grain Refiner for Aluminum and Its Alloys

Doheim, M.A.; Omran, A. M.; Abdel-Gwad, A.; Sayed, Gehan

doi:10.1007/s11661-011-0689-9

Cited by 22 publications

(16 citation statements)

References 11 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crucible is returned to the furnace by keeping it for the required holding time. Then, the crucible is taken out of the furnace and poured into KBI ring mould (3 in diameter and 1 in height) located on the top of a refractory base (fused silica block) [26]. When the solidification of the specimen has been completed, the solidified specimen is water quenched.…”

Section: Evaluation Methodsmentioning

confidence: 99%

Grain Refining of Aluminium and 6063 Alloys Using Al-V Alloy Containing Al3V Intermetallic Compound

Mahran

Omran

2022

View full text Add to dashboard Cite

The grain refinement of aluminium alloys is one of the important processes in various industrial fields. This work aims to use aluminium-vanadium (Al-V) master alloy as a new grain refiner for grain refinement of aluminium alloys. The new refiner was prepared by reduction of vanadium pentoxide V2O5 using molten aluminium, then it was examined using SEM, EDS, XRD, and optical microscopy. The findings of these tests indicated that the developed master alloy contains blocky-shaped particles evenly distributed within the aluminium matrix Al3V in the form of an intermetallic compound. Different levels of vanadium content were examined (3.5, 5.6, and 8.3) as grain refiners for commercial pure Al and 6063 alloys. It was found that the grain size was decreased from 2000 to 320 mm for commercial pure aluminium and decreased from 1500 to 300 mm for 6063 alloys. The best results were obtained by using vanadium content of 0.03 wt.% in the refined alloy and a holding time of 3 min. Based on the gross restriction factor (GRF), the new grain refiner Al-V master alloy performed well at vanadium contents more than 0.02 wt.% in the refined alloy.

show abstract

Section: Evaluation Methodsmentioning

confidence: 99%

Grain Refining of Aluminium and 6063 Alloys Using Al-V Alloy Containing Al3V Intermetallic Compound

Mahran

Omran

2022

View full text Add to dashboard Cite

show abstract

“…In order to avoid the agglomeration of TiB 2 during the standing process, Al-Ti-C, Al-Ti-C-B, Al-Ti-C-RE and Al-Ti-B-RE master alloys were developed [46][47][48]. Doheim et al [49] evaluated the Al-Ti-C master alloys as grain refiner for aluminium alloys. The second phase particles (TiC) can exist steady and not agglomerate into larger particles.…”

Section: Structure Control By Grain Refinersmentioning

confidence: 99%

Research progress of microstructure control for aluminium solidification process

et al. 2012

View full text Add to dashboard Cite

Aluminum has been the secondly main metallic material in the world, whose mechanical properties are very important for industrial applications. The sizes and shapes of grains are important in determining the performance in structural applications. How to control the microstructure during solidification process has been a research focus. This paper gives an overview on the recent progress in microstructure control for aluminium alloys solidification process, and introduces the different methods to control the microstructure in detail. The mechanisms of microstructure control for different methods are also discussed. Finally, a brief prospect on future work is presented.

show abstract

“…At present, grain refinement by adding an Al-Ti-B refiner is an effective way to improve the performance of aluminum alloy strips in casting and rolling production [5][6][7]. A large number of researchers have studied and improved the Al-Ti-B refiner to improve its refining efficiency [8][9][10][11]. However, the addition of the Al-Ti-B refiner will generate several undesirable of 12 by-products, including the formation of particle aggregates, local defects, and impurities; in addition, the refiner when used as a consumable also increases the cost of the casting and rolling production.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasonic Bending Vibration Introduced by an L-Shaped Ultrasonic Rod on the Microstructure and Properties of a 1060 Aluminum Alloy Strip Formed by Twin-Roll Casting

et al. 2020

View full text Add to dashboard Cite

In order to achieve the industrial application of ultrasonic energy in the continuous casting and rolling production of aluminum alloy, a new type of L-shaped ultrasonic rod was used to introduce an ultrasonic bending vibration into the aluminum melt in the launder during the horizontal twin-roll continuous casting and rolling process of a 1060 aluminum alloy. The effects of the ultrasonic bending vibration on the microstructure and properties of the 1060 aluminum alloy cast rolling strip and its subsequent cold rolling strip were studied experimentally, and the effect of the ultrasonic-assisted refining with different amounts of Al-Ti-B refiner was explored. The results show that under the same addition amount of Al-Ti-B refiner, the ultrasonic bending vibration can refine the grains of the cast rolling strip, make the distribution of precipitates more uniform, reduce the slag inclusion defects, and improve the mechanical properties to a certain extent. The microstructure and properties of the ultrasonic cast rolling strip with 0.18 wt% Al-Ti-B refiner or 0.12 wt% Al-Ti-B refiner are better than those of the conventional cast rolling strip, but the microstructure and properties of the ultrasonic cast rolling strip with 0.09 wt% Al-Ti-B refiner are slightly worse than those of the conventional cast rolling strip. Moreover, after cold rolling, the effect of the ultrasonic bending vibration on the improvement of the microstructure and properties of the aluminum alloy strip is inherited. A comprehensive analysis shows that the use of ultrasonic energy in this paper cannot completely replace the effect of the Al-Ti-B refiner, but it can reduce the addition amount of the Al-Ti-B refiner by 1/3.

show abstract

Evaluation of Al-Ti-C Master Alloys as Grain Refiner for Aluminum and Its Alloys

Cited by 22 publications

References 11 publications

Grain Refining of Aluminium and 6063 Alloys Using Al-V Alloy Containing Al3V Intermetallic Compound

Grain Refining of Aluminium and 6063 Alloys Using Al-V Alloy Containing Al3V Intermetallic Compound

Research progress of microstructure control for aluminium solidification process

Effects of Ultrasonic Bending Vibration Introduced by an L-Shaped Ultrasonic Rod on the Microstructure and Properties of a 1060 Aluminum Alloy Strip Formed by Twin-Roll Casting

Contact Info

Product

Resources

About