Next Article in Journal
Previous Article in Journal
Materials 2014, 7(5), 3663-3676; doi:10.3390/ma7053663
Article

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

1,2
, 1,2,*  and 1,2
Received: 21 February 2014; in revised form: 24 April 2014 / Accepted: 28 April 2014 / Published: 7 May 2014
(This article belongs to the Section Structure Analysis and Characterization)
View Full-Text   |   Download PDF [3006 KB, uploaded 7 May 2014]
Abstract: Three types of Al–5Ti master alloys were synthesized by a method of thermal explosion reaction in pure molten aluminum. Performance comparison of Al–5Ti master alloy in grain refinement of commercial purity Al with different additions (0.6%, 1.0%, 1.6%, 2.0%, and 3.0%) and holding time (10, 30, 60 and 120 min) were investigated. The results show that Al–5Ti master alloy with blocky TiAl3 particles clearly has better refining efficiency than the master alloy with mixed TiAl3 particles and the master alloy with needle-like TiAl3 particles. The structures of master alloys, differing by sizes, morphologies and quantities of TiAl3 crystals, were found to affect the pattern of the grain refining properties with the holding time. The grain refinement effect was revealed to reduce markedly for master alloys with needle–like TiAl3 crystals and to show the further significant improvement at a longer holding time for the master alloy containing both larger needle–like and blocky TiAl3 particles. For the master alloy with finer blocky particles, the grain refining effect did not obviously decrease during the whole studied range of the holding time.
Keywords: Al–5Ti master alloy; TiAl3; grain refining; commercial purity Al Al–5Ti master alloy; TiAl3; grain refining; commercial purity Al
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Ding, W.; Xia, T.; Zhao, W. Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum. Materials 2014, 7, 3663-3676.

AMA Style

Ding W, Xia T, Zhao W. Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum. Materials. 2014; 7(5):3663-3676.

Chicago/Turabian Style

Ding, Wanwu; Xia, Tiandong; Zhao, Wenjun. 2014. "Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum." Materials 7, no. 5: 3663-3676.


Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert