Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum
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 a...
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doaj-23a02e969e1547d4a284c114b28bd9972020-11-24T23:03:29ZengMDPI AGMaterials1996-19442014-05-01753663367610.3390/ma7053663ma7053663Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity AluminumWanwu Ding0Tiandong Xia1Wenjun Zhao2School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, ChinaSchool of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, ChinaSchool of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, ChinaThree 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.http://www.mdpi.com/1996-1944/7/5/3663Al–5Ti master alloyTiAl3grain refiningcommercial purity Al |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wanwu Ding Tiandong Xia Wenjun Zhao |
spellingShingle |
Wanwu Ding Tiandong Xia Wenjun Zhao Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum Materials Al–5Ti master alloy TiAl3 grain refining commercial purity Al |
author_facet |
Wanwu Ding Tiandong Xia Wenjun Zhao |
author_sort |
Wanwu Ding |
title |
Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum |
title_short |
Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum |
title_full |
Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum |
title_fullStr |
Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum |
title_full_unstemmed |
Performance Comparison of Al–Ti Master Alloys with Different Microstructures in Grain Refinement of Commercial Purity Aluminum |
title_sort |
performance comparison of al–ti master alloys with different microstructures in grain refinement of commercial purity aluminum |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2014-05-01 |
description |
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. |
topic |
Al–5Ti master alloy TiAl3 grain refining commercial purity Al |
url |
http://www.mdpi.com/1996-1944/7/5/3663 |
work_keys_str_mv |
AT wanwuding performancecomparisonofaltimasteralloyswithdifferentmicrostructuresingrainrefinementofcommercialpurityaluminum AT tiandongxia performancecomparisonofaltimasteralloyswithdifferentmicrostructuresingrainrefinementofcommercialpurityaluminum AT wenjunzhao performancecomparisonofaltimasteralloyswithdifferentmicrostructuresingrainrefinementofcommercialpurityaluminum |
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1725633590981558272 |