Investigation on Microstructure and Grain Refining Performance of a New Type of Al-3Ti-1C Master Alloy

Al-Ti-B-RE master alloy was prepared by casting of pure Ti. To improve the quality and reduce the cost of α- Al, the Al-Ti-B-RE master alloy was added to α-Al in molten and diluted state. The refining method had the advantages of shorter contact time and better refining effect. The array of the second phase particles was separated and the nucleating rate was greatly increased. Analysis and comparison of the refining effects were by X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical microscopy (OM).The refining experiment showed that the molten and diluted state Al-Ti-B-RE by oneself had better grain refining performance and had obvious advantages over Al-Ti-B in domestic.

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

Transactions of the Indian Institute of Metals ◽

10.1007/s12666-018-1462-1 ◽

2018 ◽

Vol 71 (12) ◽

pp. 3089-3093 ◽

Cited By ~ 1

Author(s):

Sachin Kumar Rathi ◽

Ashok Sharma ◽

Marisa Di Sabatino

Keyword(s):

Master Alloy ◽

Hot Rolling ◽

Hot Tearing ◽

Grain Refining ◽

Refining Performance ◽

Effect Of Hot Rolling

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Research on Microstructure and Refining Effect of Al-3Ti-0.5B Master Alloy Produced with Ti Sponge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.66-68.845 ◽

2011 ◽

Vol 66-68 ◽

pp. 845-849

Author(s):

Xiao Wei Chen ◽

Ya Gao ◽

Hong Liang Zhao ◽

Kang Rong Weng ◽

Bao Feng Zhang

Keyword(s):

Grain Size ◽

Master Alloy ◽

Molten Aluminum ◽

Grain Refining ◽

Commercial Purity ◽

Average Grain Size ◽

Feeding Methods ◽

Refining Performance ◽

Second Phases ◽

Commercial Purity Aluminum

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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