scholarly journals Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum

Materials ◽  
2014 ◽  
Vol 7 (5) ◽  
pp. 3663-3676 ◽  
Author(s):  
Wanwu Ding ◽  
Tiandong Xia ◽  
Wenjun Zhao
Keyword(s):  
Grain Refinement ◽  
Performance Comparison ◽  
Commercial Purity ◽  
Master Alloys ◽  
Commercial Purity Aluminum

scholarly journals Ultra Grain Refinement of Commercial Purity Aluminum by a Multi-Stack ARB Process

2002 ◽  
Vol 66 (5) ◽  
pp. 470-475 ◽  
Author(s):  
Seong-Hee Lee ◽  
Hajime Inagaki ◽  
Hiroshi Utsunomiya ◽  
Yoshihiro Saito ◽  
Tetsuo Sakai
Keyword(s):  
Grain Refinement ◽  
Commercial Purity ◽  
Commercial Purity Aluminum

Effect of Fe on grain refinement of commercial purity aluminum

2006 ◽  
Vol 27 (9) ◽  
pp. 794-798 ◽  
Author(s):  
Yijie Zhang ◽  
Naiheng Ma ◽  
Hongzhan Yi ◽  
Songchun Li ◽  
Haowei Wang
Keyword(s):  
Grain Refinement ◽  
Commercial Purity ◽  
Commercial Purity Aluminum

scholarly journals Ultra Grain Refinement of Commercial Purity Aluminum by a Multi-Stack ARB Process

2003 ◽  
Vol 44 (7) ◽  
pp. 1376-1381 ◽  
Author(s):  
Seong-Hee Lee ◽  
Hajime Inagaki ◽  
Hiroshi Utsunomiya ◽  
Yoshihiro Saito ◽  
Tetsuo Sakai
Keyword(s):  
Grain Refinement ◽  
Commercial Purity ◽  
Commercial Purity Aluminum

The influence of gadolinium on Al–Ti–C master alloy and its refining effect on AZ31 magnesium alloy

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Wenxue Fan ◽  
Hai Hao
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Magnesium Alloys ◽  
Master Alloy ◽  
Cast Alloy ◽  
Az31 Magnesium Alloy ◽  
Synthesis Mechanism ◽  
Refining Effect ◽  
Master Alloys

Abstract Grain refinement has a significant influence on the improvement of mechanical properties of magnesium alloys. In this study, a series of Al–Ti–C-xGd (x = 0, 1, 2, 3) master alloys as grain refiners were prepared by self-propagating high-temperature synthesis. The synthesis mechanism of the Al–Ti–C-xGd master alloy was analyzed. The effects of Al–Ti–C-xGd master alloys on the grain refinement and mechanical properties of AZ31 (Mg-3Al-1Zn-0.4Mn) magnesium alloys were investigated. The results show that the microstructure of the Al–Ti–C-xGd alloy contains α-Al, TiAl3, TiC and the core–shell structure TiAl3/Ti2Al20Gd. The refining effect of the prepared Al–Ti–C–Gd master alloy is obviously better than that of Al–Ti–C master alloy. The grain size of AZ31 magnesium alloy was reduced from 323 μm to 72 μm when adding 1 wt.% Al–Ti–C-2Gd master alloy. In the same condition, the ultimate tensile strength and elongation of as-cast alloy were increased from 130 MPa, 7.9% to 207 MPa, 16.6% respectively.

scholarly journals The Interactions Between Oxide Film Inclusions and Inoculation Particles TiB2 in Aluminum Melt

2021 ◽  
Author(s):  
Jiawei Yang ◽  
Sarina Bao ◽  
Shahid Akhtar ◽  
Yanjun Li
Keyword(s):  
Grain Refinement ◽  
Master Alloy ◽  
Large Fraction ◽  
Oxide Films ◽  
Grain Refiner ◽  
Particle Sedimentation ◽  
Aluminum Melt ◽  
Refinement Efficiency ◽  
Long Time ◽  
Commercial Purity Aluminum

AbstractIn this work, a systematic study on the interactions between aluminum oxide films and TiB2 grain refiner particles and their effect on grain refinement behavior have been conducted. Oxide films were introduced into a commercial purity aluminum melt by adding AA 6061 alloy chips while the grain refiner particles were introduced by adding Al-3T-1B master alloy. Strong sedimentation of TiB2 grain refiner particles was observed in aluminum melt without chip addition during long-time settling. Most of the TiB2 particles were settled and accumulated at the bottom of crucible. In contrast, the sedimentation of TiB2 particles is much less in the melt with the addition of oxide films. A large fraction of TiB2 particles were found to be adhered to the oxide films located at the top part of the crucible, which inhibited the sedimentation of grain refiner particles. TP-1 type tests were also done to study the grain refinement efficiency of Al-3Ti-1B master alloy under different melt cleanliness and settling time. It is found that sedimentation of TiB2 particles greatly reduces the grain refinement efficiency. The introduction of oxide films seems to slightly alleviate the fading effect. This is owing to the strong adherence between the oxide films and TiB2 particles, which leads to a retardation of particle sedimentation.

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