Al-Ti-C grain refiner made by ultrasonic levitation

Li, Yinglong; Feng, H.K.; Cao, Furong; Chen, Yanbo

doi:10.1007/s11595-007-3319-z

Cited by 9 publications

(10 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Under the ultrasonic field coupling effect, the incident and reflection sound waves acoustic wave at the Al-Ti/C interface have superimposition effect [11], the high temperature in the melt near the interface Al-Ti/C will produce locally, which can make C a free C atom in Al melt, and also can effectively prevent the formation of Al 4 C 3 directly. The formation of TiC can be expressed by:…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of ultrasonic cavitation on the wetting and reaction of Al-Ti/C interface

Li¹,

He²,

Zhao³

2016

Proceedings of the International Symposium on Mechanical Engineering and Material Science

View full text Add to dashboard Cite

Abstract. Al-Ti-C alloy is a kind of fine refinement agent. However, the wetting of Al/C interface and TiC synthesis are the key technical problems to be solved in the preparation of Al-Ti-C grain refinement. In this paper, the acoustic cavitation effect was used to improve the wettability of Al-Ti/C interface, and improve the thermodynamic conditions of reaction, and thus the Al-Ti-C grain refinement agent was successfully prepared. The wetting properties of Al-Ti/C interface under different conditions were obtained. The results show that the acoustic cavitation effect significantly influences the wetting process. When the sound intensity is greater than the threshold value, the acoustic cavitation effect produces, and then the complete wetting of Al-Ti/C interface can be realized. At the same time, the high temperature effect of the cavitation also prevents the formation of harmful Al4C3 compound, and changes the way of forming TiC compound which is different from the conventional reaction, and enhances the thermodynamics reactivity of the system to promote the TiC synthesis.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The external energy gained from ultrasound make particle release from clusters and distribute dispersedly. Therefore, the effects of acoustic cavitation and acoustic streaming are suitable for the preparation of high performance AlTiC grain refinement [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effect of ultrasonic cavitation on the wetting and reaction of Al-Ti/C interface

Li¹,

He²,

Zhao³

2016

Proceedings of the International Symposium on Mechanical Engineering and Material Science

View full text Add to dashboard Cite

show abstract

“…It has been reported that the rare earth metals have certain refining ability and catalytic effect [11,12], which play an important role in promoting the synthesis of fine TiC particles in the preparation of Al-Ti-C alloy, and thus, Al-Ti-C-RE alloys with better refining efficiency than Al-Ti-C have been developed [13,14,15,16]. Although such alloys have been extensively studied, the refining properties of the prepared Al-Ti-C-RE alloys are not sufficiently stable [17,18]. So far, it has not been widely used in the aluminum and its alloy refining industry.…”

Section: Introductionmentioning

confidence: 99%

Effect of CeO2 on Microstructure and Synthesis Mechanism of Al-Ti-C Alloy

et al. 2018

View full text Add to dashboard Cite

The effects of CeO2 on the microstructure and synthesis mechanism of Al-Ti-C alloy were investigated by quenching experiment method, while using Al powder, Ti powder, graphite powder, and CeO2 powder as main raw materials. The results showed that the addition of CeO2 was favorable for promoting the formation of TiC particles in Al-Ti-C systems. With CeO2 contents increasing, the distribution of TiC particles were more homogeneous, and the rare earth phase Ti2Al20Ce was formed. CeO2 had little effect on the synthesis of Al3Ti particles in Al-Ti-C systems, but had a significant effect on the synthesis of TiC particles. In the Al-Ti-C system, TiC is mainly formed by the reaction of dissolved [Ti] and solid C in the melt. While in the Al-Ti-C-Ce system, CeO2 reacts with C and O2 to form CeC2 firstly, and then CeC2 reacts with dissolved [Ti] to form TiC. Based on thermodynamic calculation and microstructure analysis in the process of reaction, a macroscopic kinetic model of Al-Ti-C-Ce system reactions was proposed in this paper.

show abstract

“…The existing literature has demonstrated the possibility to join both c-Ti-Al alloys and Ti alloys either to themselves or to other special materials by diffusion bonding. [3][4][5][6][7][8] However, how to improve the DB parameters (bonding time and temperature, etc.) and cut the cost is still a crucial problem.…”

mentioning

confidence: 99%

Probing into diffusion bonding of laser surface treated γ-Ti–Al alloy/Ti–6Al–4V alloy

Wang¹,

Luo²,

Liu³

et al. 2008

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

In this work, a novel diffusion bonding technique combining the laser surface treatment (LST) with the diffusion bonding is used to join a c-Ti-Al alloy with a Ti-6Al-4V alloy. By using the LST and subsequent heat treatment, a layer with a fine grain structure can be obtained on their surface of the two alloys. The diffusion bonding behaviour between c-Ti-Al alloy and Ti-6Al-4V alloy with or without LST under the different bonding conditions is investigated. The result reveals that LST can improve the diffusion bonding behaviour of the two alloys, and the three point bending strength of the joints can be promoted. The sound bonding between the two alloys with the LST is achieved at 1173 K under 80 MPa in 2 h.

show abstract

Al-Ti-C grain refiner made by ultrasonic levitation

Cited by 9 publications

References 8 publications

Effect of ultrasonic cavitation on the wetting and reaction of Al-Ti/C interface

Effect of ultrasonic cavitation on the wetting and reaction of Al-Ti/C interface

Effect of CeO2 on Microstructure and Synthesis Mechanism of Al-Ti-C Alloy

Probing into diffusion bonding of laser surface treated γ-Ti–Al alloy/Ti–6Al–4V alloy

Contact Info

Product

Resources

About