Effect of Na-based flux on melt quality assessment of 46,000 alloys

The influence of Na-Based flux on the melt quality assessment was studied using Density index (DI), bifilm index (BI) and tensile test. The melt was prepared with scrap and ingot with and/or without the addition of Na-based flux. The results show that the addition of Na-based flux decreases the accu...

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Main Authors: Qing Zhang, Tomas Liljenfors, Sofia Jansson, Stefan Jonsson, Anders E.W. Jarfors
Format: Article
Language:English
Published: Elsevier 2023-11-01
Series:Journal of Materials Research and Technology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785423025139
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author Qing Zhang
Tomas Liljenfors
Sofia Jansson
Stefan Jonsson
Anders E.W. Jarfors
author_facet Qing Zhang
Tomas Liljenfors
Sofia Jansson
Stefan Jonsson
Anders E.W. Jarfors
author_sort Qing Zhang
collection DOAJ
description The influence of Na-Based flux on the melt quality assessment was studied using Density index (DI), bifilm index (BI) and tensile test. The melt was prepared with scrap and ingot with and/or without the addition of Na-based flux. The results show that the addition of Na-based flux decreases the accuracy of the correlation between BI/DI and the hydrogen content due to the increased shrinkage pores. The addition of flux promotes the formation of shrinkage pores by either altering the eutectic solidification behavior or generating more and bigger oxide films which leads to insufficient feeding. Moreover, the addition of flux improves the ductility of specimens by modifying the eutectic phase rather than improving the melt quality.
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spelling doaj.art-cba1b8483c2c432cb3e0c3b55f9920c22024-02-21T05:26:03ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012718301842Effect of Na-based flux on melt quality assessment of 46,000 alloysQing Zhang0Tomas Liljenfors1Sofia Jansson2Stefan Jonsson3Anders E.W. Jarfors4Jönköping University, School of Engineering, Materials and Manufacturing, 551 11, Jönköping, Sweden; Corresponding author.Bryne AB, Åbogatan 1, 343 71 Diö, SwedenJönköping University, School of Engineering, Materials and Manufacturing, 551 11, Jönköping, SwedenKTH Royal Institute of Technology, School of Industrial Engineering and Management, Materials Science and Engineering, SE-100 44, Stockholm, SwedenJönköping University, School of Engineering, Materials and Manufacturing, 551 11, Jönköping, Sweden; Corresponding author.The influence of Na-Based flux on the melt quality assessment was studied using Density index (DI), bifilm index (BI) and tensile test. The melt was prepared with scrap and ingot with and/or without the addition of Na-based flux. The results show that the addition of Na-based flux decreases the accuracy of the correlation between BI/DI and the hydrogen content due to the increased shrinkage pores. The addition of flux promotes the formation of shrinkage pores by either altering the eutectic solidification behavior or generating more and bigger oxide films which leads to insufficient feeding. Moreover, the addition of flux improves the ductility of specimens by modifying the eutectic phase rather than improving the melt quality.http://www.sciencedirect.com/science/article/pii/S2238785423025139Melt qualityBifilm indexReduced pressure testShrinkageFluxTensile test
spellingShingle Qing Zhang
Tomas Liljenfors
Sofia Jansson
Stefan Jonsson
Anders E.W. Jarfors
Effect of Na-based flux on melt quality assessment of 46,000 alloys
Journal of Materials Research and Technology
Melt quality
Bifilm index
Reduced pressure test
Shrinkage
Flux
Tensile test
title Effect of Na-based flux on melt quality assessment of 46,000 alloys
title_full Effect of Na-based flux on melt quality assessment of 46,000 alloys
title_fullStr Effect of Na-based flux on melt quality assessment of 46,000 alloys
title_full_unstemmed Effect of Na-based flux on melt quality assessment of 46,000 alloys
title_short Effect of Na-based flux on melt quality assessment of 46,000 alloys
title_sort effect of na based flux on melt quality assessment of 46 000 alloys
topic Melt quality
Bifilm index
Reduced pressure test
Shrinkage
Flux
Tensile test
url http://www.sciencedirect.com/science/article/pii/S2238785423025139
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