Effect of Hot Rolling on Grain Refining Performance of Al–5Ti–1B Master Alloy on Hot Tearing on Al–7Si–3Cu Alloy

Al-3Ti-0.5B master alloy was prepared by reaction of Ti sponge, KBF4with aluminum melt. The morphology and distribution of the second phases effected by the feeding methods have been discussed. And the grain refining performance and the resistance to fading of the master alloy were investigated. The result shows that the Al-3Ti-0.5B master alloy which was prepared by adding mixture of Ti sponge and KBF4power into molten aluminum contains a large number of granular TiB2phase and blocky TiAl3phase. The average grain size of commercial purity aluminum was refined from 920μm to 120μm by adding 0.5wt.% of the master alloy. And the refining performance of the master alloy shows no obviously fading phenomenon when the holding time up to 30min.

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Microstructure and Grain Refining Performance of a Rapidly Solidified Al-5Ti-1B Master Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.546-549.755 ◽

2007 ◽

Vol 546-549 ◽

pp. 755-760

Author(s):

Yan Feng Han ◽

Da Shu ◽

Lan Jin ◽

Jun Wang ◽

Bao De Sun

Keyword(s):

Master Alloy ◽

Large Scale ◽

Continuous Production ◽

Tib2 Particle ◽

Grain Refining ◽

Purity Aluminium ◽

Rotating Liquid ◽

Spinning Process ◽

Refining Performance ◽

Rapidly Solidified

A rapidly solidified Al-5Ti-1B master alloy prepared by the in-rotating-liquid spinning process has been investigated. It has been found that the in-rotating-liquid spinning process is a potential rapid solidification method to realize the continuous production of the master alloy wire on a large scale. The microstructure of the Al-5Ti-1B was evidently improved after being rapidly solidified. The agglomeration of the TiB2 particle was significantly decreased. Consequently, the grain size of the purity aluminium refined by the rapidly solidified Al-5Ti-1B was reduced by 15% compared with that refined by the master alloy prepared under normal conditions.

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Influence of high-intensity ultrasound on grain refining performance of Al–5Ti–1B master alloy on aluminium

Materials Science and Engineering A ◽

10.1016/j.msea.2005.06.024 ◽

2005 ◽

Vol 405 (1-2) ◽

pp. 306-312 ◽

Cited By ~ 80

Author(s):

Yanfeng Han ◽

Ke Li ◽

Jun Wang ◽

Da Shu ◽

Baode Sun

Keyword(s):

Master Alloy ◽

High Intensity ◽

Grain Refining ◽

High Intensity Ultrasound ◽

Refining Performance

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Microstructure evolution and grain refining performance of new green kind of Al–5Ti–C master alloy

International Journal of Cast Metals Research ◽

10.1179/1743133614y.0000000138 ◽

2014 ◽

Vol 28 (2) ◽

pp. 89-96 ◽

Cited By ~ 4

Author(s):

W. W. Ding ◽

X. Y. Zhang ◽

W. J. Zhao ◽

T. D. Xia ◽

H. X. Zhang

Keyword(s):

Microstructure Evolution ◽

Master Alloy ◽

Grain Refining ◽

Refining Performance

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The effect of the excess Titanium content on the microstructure of Al – Si foundry alloys

International Journal of Engineering and Management Sciences ◽

10.21791/ijems.2019.1.2. ◽

2019 ◽

Vol 4 (1) ◽

pp. 12-20

Author(s):

Marianna Bubenkó ◽

György Fegyverneki ◽

Dániel Molnár ◽

Mónika Tokár

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Master Alloy ◽

Titanium Content ◽

Hot Tearing ◽

Favourable Effect ◽

Grain Refining ◽

Foundry Alloys ◽

Ti Addition

Grain refining is an important technological step for the nucleus growth of the melt, in order to increase the number of nuclei, to improve mechanical properties (tensile strength, yield strength, hardness, elongation), feeding conditions and to decrease the tendency of hot tearing and the degree of sintering. [1][2] The aim of the experiments was the determination of the grain refining effects of titanium (Ti) addition in the form of AlTi5B1 master alloy to the examined alloys (AlSi7MgCu0.5 – AC 42 000, AlSi9Cu3Fe0.5 – 46 500; AlSi9Cu1 – AC 46 400). The results prove that the addition of small amount of master alloy has a favourable effect on the foundry practice.

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