The evolution of solid powders in liquid aluminum at low temperature and the effects of ultrasound on it

Zhiwei Liu; Qingyou Han

doi:10.1007/978-3-319-48141-8_10

The evolution of solid powders in liquid aluminum at low temperature and the effects of ultrasound on it

Zhiwei Liu
, Qingyou Han

Purdue University

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

This research investigated the evolution of solid Ti powders in liquid Al at low melting temperature of 730°C. In situ Al₃Ti particles were synthesized due to the reactive diffusion between solid Ti powders and liquid Al. These Al₃Ti particles were blocky in morphology and smaller than 5 µm in size. It was found that the formation of Al₃Ti particles underwent the processes of nucleation, growth and rupture. Accordingly, a reaction-peeling model was suggested to illustrate the formation mechanism of small blocky Al₃Ti particles. In addition, the effects of high-intensity ultrasound on the diffusion reaction between solid Ti powders and liquid Al were studied. Ultrasonic fields in the Al melt could generate instantaneous high pressure and interparticle collisions, both of which could accelerate the formation rate of Al₃Ti particles significantly. An ultrasound assisted in situ method was proposed for producing in situ Al₃Ti/Al composites in this research.

Original language	English
Title of host publication	Advanced Composites for Aerospace, Marine, and Land Applications II
Publisher	Springer International Publishing
Pages	137-148
Number of pages	12
ISBN (Electronic)	9783319481418
ISBN (Print)	9781119082262
DOIs	https://doi.org/10.1007/978-3-319-48141-8_10
State	Published - 1 Jan 2016
Externally published	Yes

Keywords

AlTi particles
Aluminum composites
Ultrasound

Access to Document

10.1007/978-3-319-48141-8_10

Cite this

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title = "The evolution of solid powders in liquid aluminum at low temperature and the effects of ultrasound on it",

abstract = "This research investigated the evolution of solid Ti powders in liquid Al at low melting temperature of 730°C. In situ Al3Ti particles were synthesized due to the reactive diffusion between solid Ti powders and liquid Al. These Al3Ti particles were blocky in morphology and smaller than 5 µm in size. It was found that the formation of Al3Ti particles underwent the processes of nucleation, growth and rupture. Accordingly, a reaction-peeling model was suggested to illustrate the formation mechanism of small blocky Al3Ti particles. In addition, the effects of high-intensity ultrasound on the diffusion reaction between solid Ti powders and liquid Al were studied. Ultrasonic fields in the Al melt could generate instantaneous high pressure and interparticle collisions, both of which could accelerate the formation rate of Al3Ti particles significantly. An ultrasound assisted in situ method was proposed for producing in situ Al3Ti/Al composites in this research.",

keywords = "AlTi particles, Aluminum composites, Ultrasound",

author = "Zhiwei Liu and Qingyou Han",

note = "Publisher Copyright: {\textcopyright} 2016 by The Minerals, Metals \& Materials Society.",

year = "2016",

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doi = "10.1007/978-3-319-48141-8\_10",

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T1 - The evolution of solid powders in liquid aluminum at low temperature and the effects of ultrasound on it

AU - Liu, Zhiwei

AU - Han, Qingyou

PY - 2016/1/1

Y1 - 2016/1/1

N2 - This research investigated the evolution of solid Ti powders in liquid Al at low melting temperature of 730°C. In situ Al3Ti particles were synthesized due to the reactive diffusion between solid Ti powders and liquid Al. These Al3Ti particles were blocky in morphology and smaller than 5 µm in size. It was found that the formation of Al3Ti particles underwent the processes of nucleation, growth and rupture. Accordingly, a reaction-peeling model was suggested to illustrate the formation mechanism of small blocky Al3Ti particles. In addition, the effects of high-intensity ultrasound on the diffusion reaction between solid Ti powders and liquid Al were studied. Ultrasonic fields in the Al melt could generate instantaneous high pressure and interparticle collisions, both of which could accelerate the formation rate of Al3Ti particles significantly. An ultrasound assisted in situ method was proposed for producing in situ Al3Ti/Al composites in this research.

AB - This research investigated the evolution of solid Ti powders in liquid Al at low melting temperature of 730°C. In situ Al3Ti particles were synthesized due to the reactive diffusion between solid Ti powders and liquid Al. These Al3Ti particles were blocky in morphology and smaller than 5 µm in size. It was found that the formation of Al3Ti particles underwent the processes of nucleation, growth and rupture. Accordingly, a reaction-peeling model was suggested to illustrate the formation mechanism of small blocky Al3Ti particles. In addition, the effects of high-intensity ultrasound on the diffusion reaction between solid Ti powders and liquid Al were studied. Ultrasonic fields in the Al melt could generate instantaneous high pressure and interparticle collisions, both of which could accelerate the formation rate of Al3Ti particles significantly. An ultrasound assisted in situ method was proposed for producing in situ Al3Ti/Al composites in this research.

KW - AlTi particles

KW - Aluminum composites

KW - Ultrasound

UR - https://www.scopus.com/pages/publications/85015000128

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DO - 10.1007/978-3-319-48141-8_10

M3 - 章节

AN - SCOPUS:85015000128

SN - 9781119082262

SP - 137

EP - 148

BT - Advanced Composites for Aerospace, Marine, and Land Applications II

PB - Springer International Publishing

ER -

The evolution of solid powders in liquid aluminum at low temperature and the effects of ultrasound on it

Abstract

Keywords

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