Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites
The effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites was studied by using computer-aided cooling curve analysis (CA-CCA), X-ray diffraction, EDS, SEM, TEM and electrochemical testing. The experimental results showed that the La addition reduced the solidificatio...
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doaj-fe7a8b98af8e4d298c0b458d2a94ba0a2020-11-25T03:12:35ZengElsevierJournal of Materials Research and Technology2238-78542020-07-019470477058Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu compositesSen Yang0Ruiying Zhang1Huan Liu2Jinxuan Li3Han Yan4School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of ChinaCorresponding author.; School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of ChinaSchool of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of ChinaSchool of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of ChinaSchool of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of ChinaThe effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites was studied by using computer-aided cooling curve analysis (CA-CCA), X-ray diffraction, EDS, SEM, TEM and electrochemical testing. The experimental results showed that the La addition reduced the solidification rate of composites, decreased the nucleation temperature of primary α-Al, enhanced the transformation temperature of Al–Cu eutectic and narrowed the liquid–solid interval. Meanwhile, Al2.12La0.88 phase formation was found after adding La to the composites, and the precipitation of CuAl2 phase decreased with the increase of La content. The segregation of large agglomerates containing TiB2 clusters and second phases was improved obviously after the addition of La, which resulted in more uniform microstructure of composites. Moreover, proper La enhanced the corrosion resistance of 10%TiB2(p)/Al–5%Cu composite in 3.5% sodium chloride solution.http://www.sciencedirect.com/science/article/pii/S223878542031290410%TiB2(p)/Al–5%Cu compositeLa additionComputer-aided cooling curve analysisMicrostructureCorrosion resistance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sen Yang Ruiying Zhang Huan Liu Jinxuan Li Han Yan |
spellingShingle |
Sen Yang Ruiying Zhang Huan Liu Jinxuan Li Han Yan Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites Journal of Materials Research and Technology 10%TiB2(p)/Al–5%Cu composite La addition Computer-aided cooling curve analysis Microstructure Corrosion resistance |
author_facet |
Sen Yang Ruiying Zhang Huan Liu Jinxuan Li Han Yan |
author_sort |
Sen Yang |
title |
Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites |
title_short |
Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites |
title_full |
Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites |
title_fullStr |
Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites |
title_full_unstemmed |
Effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites |
title_sort |
effect of la on microstructure and corrosion behavior of 10%tib2(p)/al–5%cu composites |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2020-07-01 |
description |
The effect of La on microstructure and corrosion behavior of 10%TiB2(p)/Al–5%Cu composites was studied by using computer-aided cooling curve analysis (CA-CCA), X-ray diffraction, EDS, SEM, TEM and electrochemical testing. The experimental results showed that the La addition reduced the solidification rate of composites, decreased the nucleation temperature of primary α-Al, enhanced the transformation temperature of Al–Cu eutectic and narrowed the liquid–solid interval. Meanwhile, Al2.12La0.88 phase formation was found after adding La to the composites, and the precipitation of CuAl2 phase decreased with the increase of La content. The segregation of large agglomerates containing TiB2 clusters and second phases was improved obviously after the addition of La, which resulted in more uniform microstructure of composites. Moreover, proper La enhanced the corrosion resistance of 10%TiB2(p)/Al–5%Cu composite in 3.5% sodium chloride solution. |
topic |
10%TiB2(p)/Al–5%Cu composite La addition Computer-aided cooling curve analysis Microstructure Corrosion resistance |
url |
http://www.sciencedirect.com/science/article/pii/S2238785420312904 |
work_keys_str_mv |
AT senyang effectoflaonmicrostructureandcorrosionbehaviorof10tib2pal5cucomposites AT ruiyingzhang effectoflaonmicrostructureandcorrosionbehaviorof10tib2pal5cucomposites AT huanliu effectoflaonmicrostructureandcorrosionbehaviorof10tib2pal5cucomposites AT jinxuanli effectoflaonmicrostructureandcorrosionbehaviorof10tib2pal5cucomposites AT hanyan effectoflaonmicrostructureandcorrosionbehaviorof10tib2pal5cucomposites |
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