Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition

Grain refinement in medium chromium ferritic stainless steel weld was attempted via elemental (aluminum) powder pre-placement technique prior to melting under a TIG torch. A Box- Behnken experimental design was adopted with current, travel speed and the amount of aluminum powder added as the proc...

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Main Authors:	Amuda, Muhammed Olawale Hakeem, Mridha, Shahjahan
Format:	Article
Language:	English
Published:	Trans Tech Publications 2012
Subjects:	TN600 Metallurgy
Online Access:	http://irep.iium.edu.my/23363/ http://irep.iium.edu.my/23363/1/AMR.445.717_2012.pdf

id	iium-23363
recordtype	eprints
spelling	iium-233632013-07-04T06:51:44Z http://irep.iium.edu.my/23363/ Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan TN600 Metallurgy Grain refinement in medium chromium ferritic stainless steel weld was attempted via elemental (aluminum) powder pre-placement technique prior to melting under a TIG torch. A Box- Behnken experimental design was adopted with current, travel speed and the amount of aluminum powder added as the process factors for producing weld pool. The resolidified weld tracks were characterized using microscopy, microhardness and mechanical testing. The degree of grain refinement achieved was evaluated using a scaling index known as Grain Refinement Index (GRI). The findings showed that the GRI is influenced by the concentration of the aluminum powder introduced into the melt pool. Furthermore, high GRI does not necessarily translate to better mechanical properties relative to the conventional weld. This suggests that the grain size effect might not be the only factor influencing the property of weld metal. However, weld track treated with 0.08mg/mm2 of aluminum powder exhibited about 20% improvement in properties relative to the conventional weld made under the same energy conditions. Trans Tech Publications 2012-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/23363/1/AMR.445.717_2012.pdf Amuda, Muhammed Olawale Hakeem and Mridha, Shahjahan (2012) Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition. Advanced Materials Research, 445 (2012). pp. 717-722. ISSN 1022-6680
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TN600 Metallurgy
spellingShingle	TN600 Metallurgy Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
description	Grain refinement in medium chromium ferritic stainless steel weld was attempted via elemental (aluminum) powder pre-placement technique prior to melting under a TIG torch. A Box- Behnken experimental design was adopted with current, travel speed and the amount of aluminum powder added as the process factors for producing weld pool. The resolidified weld tracks were characterized using microscopy, microhardness and mechanical testing. The degree of grain refinement achieved was evaluated using a scaling index known as Grain Refinement Index (GRI). The findings showed that the GRI is influenced by the concentration of the aluminum powder introduced into the melt pool. Furthermore, high GRI does not necessarily translate to better mechanical properties relative to the conventional weld. This suggests that the grain size effect might not be the only factor influencing the property of weld metal. However, weld track treated with 0.08mg/mm2 of aluminum powder exhibited about 20% improvement in properties relative to the conventional weld made under the same energy conditions.
format	Article
author	Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan
author_facet	Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan
author_sort	Amuda, Muhammed Olawale Hakeem
title	Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
title_short	Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
title_full	Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
title_fullStr	Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
title_full_unstemmed	Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
title_sort	grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition
publisher	Trans Tech Publications
publishDate	2012
url	http://irep.iium.edu.my/23363/ http://irep.iium.edu.my/23363/1/AMR.445.717_2012.pdf
first_indexed	2023-09-18T20:35:23Z
last_indexed	2023-09-18T20:35:23Z
_version_	1777409011096748032

Grain refinement in medium chromium ferritic stainless steel welds via aluminum powder addition

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