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Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling

Two strategies for grain refinement in the Ferritic Stainless Steel (FSS) welds involving cryogenic cooling and elemental metal powder addition into the melt pool are investigated and their performances are evaluated. Full-penetration-bead single pass weld tracks were produced on AISI 430 FSS plate...

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Main Authors: Amuda, Muhammed Olawale Hakeem ., Mridha, Shahjahan
Format: Article
Language:English
Published: Elsevier 2012
Subjects:
TN600 Metallurgy
Online Access:http://irep.iium.edu.my/9695/1/MOHamudaSmridha_MAD2012.pdf
http://irep.iium.edu.my/9695/
http://www.sciencedirect.com/science/article/pii/S0261306911006911
http://dx.doi.org/10.1016/j.matdes.2011.09.066
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spelling my.iium.irep.96952014-05-30T22:20:29Z http://irep.iium.edu.my/9695/ Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling Amuda, Muhammed Olawale Hakeem . Mridha, Shahjahan TN600 Metallurgy Two strategies for grain refinement in the Ferritic Stainless Steel (FSS) welds involving cryogenic cooling and elemental metal powder addition into the melt pool are investigated and their performances are evaluated. Full-penetration-bead single pass weld tracks were produced on AISI 430 FSS plate using a Gas Tungsten Arc (GTA). The two grain refinement strategies constricted the weld geometry; however, the metal powder addition produced greater constriction of about 50% of the size of the heat affected zone (HAZ) of the conventional welds compared to 36% in the cryogenic cooling. Both paradigms produced generally equiaxed and refined grain structure; the degree of refinement is higher with the metal powder addition but contains embrittling intermetallic phases, which negatively affect the ductility of the weld. Such phases are absent in the welds processed with cryogenic cooling, and thus the welds produced with this method provide a better combination of mechanical properties than those treated with metal powder addition. Cryogenic cooling improved the ductility of the welds to 80% of the base metal whereas metal powder addition gave 20–65% of the base metal’s ductility depending on the type of metal powder introduced into the melt pool. Elsevier 2012-03 Article REM application/pdf en http://irep.iium.edu.my/9695/1/MOHamudaSmridha_MAD2012.pdf Amuda, Muhammed Olawale Hakeem . and Mridha, Shahjahan (2012) Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling. Materials and Design, 35 (7). pp. 609-618. ISSN 0261-3069 http://www.sciencedirect.com/science/article/pii/S0261306911006911 http://dx.doi.org/10.1016/j.matdes.2011.09.066
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic TN600 Metallurgy
spellingShingle TN600 Metallurgy
Amuda, Muhammed Olawale Hakeem .
Mridha, Shahjahan
Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling
description Two strategies for grain refinement in the Ferritic Stainless Steel (FSS) welds involving cryogenic cooling and elemental metal powder addition into the melt pool are investigated and their performances are evaluated. Full-penetration-bead single pass weld tracks were produced on AISI 430 FSS plate using a Gas Tungsten Arc (GTA). The two grain refinement strategies constricted the weld geometry; however, the metal powder addition produced greater constriction of about 50% of the size of the heat affected zone (HAZ) of the conventional welds compared to 36% in the cryogenic cooling. Both paradigms produced generally equiaxed and refined grain structure; the degree of refinement is higher with the metal powder addition but contains embrittling intermetallic phases, which negatively affect the ductility of the weld. Such phases are absent in the welds processed with cryogenic cooling, and thus the welds produced with this method provide a better combination of mechanical properties than those treated with metal powder addition. Cryogenic cooling improved the ductility of the welds to 80% of the base metal whereas metal powder addition gave 20–65% of the base metal’s ductility depending on the type of metal powder introduced into the melt pool.
format Article
author Amuda, Muhammed Olawale Hakeem .
Mridha, Shahjahan
author_facet Amuda, Muhammed Olawale Hakeem .
Mridha, Shahjahan
author_sort Amuda, Muhammed Olawale Hakeem .
title Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling
title_short Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling
title_full Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling
title_fullStr Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling
title_full_unstemmed Comparative evaluation of grain refinement in AISI 430 FSS welds by elemental metal powder addition and cryogenic cooling
title_sort comparative evaluation of grain refinement in aisi 430 fss welds by elemental metal powder addition and cryogenic cooling
publisher Elsevier
publishDate 2012
url http://irep.iium.edu.my/9695/1/MOHamudaSmridha_MAD2012.pdf
http://irep.iium.edu.my/9695/
http://www.sciencedirect.com/science/article/pii/S0261306911006911
http://dx.doi.org/10.1016/j.matdes.2011.09.066
_version_ 1643606290629394432
score 13.211869

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