Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling

Enhanced weld cooling via forced convection using cryogenic cooling technique is an option for controlling grain growth in the HAZ of ferritic stainless steel and hence improves weld ductility. However, this technique probably alters the martensite distribution in the high-temperature heat affected...

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Main Authors:	Amuda, Muhammed Olawale Hakeem, Mridha, Shahjahan
Format:	Conference or Workshop Item
Language:	English
Published:	2011
Subjects:	TN600 Metallurgy
Online Access:	http://irep.iium.edu.my/9697/ http://irep.iium.edu.my/9697/ http://irep.iium.edu.my/9697/1/mohamuda_smridha_MAPT2011%282%29_conferenceproceedings.pdf

id	iium-9697
recordtype	eprints
spelling	iium-96972011-12-12T13:36:03Z http://irep.iium.edu.my/9697/ Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan TN600 Metallurgy Enhanced weld cooling via forced convection using cryogenic cooling technique is an option for controlling grain growth in the HAZ of ferritic stainless steel and hence improves weld ductility. However, this technique probably alters the martensite distribution in the high-temperature heat affected zone (HTHAZ) which is a critical constituent in analyzing susceptibility to sensitization in ferritic stainless steel grades. In the present work, forced convection weld cooling of AISI 430 ferritic stainless steel weld using cryogenic liquid is undertaken and the effect on sensitization is reported. The study indicates that cryogenic cooling increases the cooling rate in the HTHAZ and reduces the martensite volume percent by an average of 20%. This reduction in martensite content in the HTHAZ increases the level of ditched structure in cryogenic-treated welds. There are more ferrite-martensite ditched grain boundaries in cryo-treated welds than are in conventional welds. Though, the cryo-treated welds exhibit greater ditched boundary, the structure is still acceptable since no single grain boundary is completely surrounded by ditches. 2011-06-03 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/9697/1/mohamuda_smridha_MAPT2011%282%29_conferenceproceedings.pdf Amuda, Muhammed Olawale Hakeem and Mridha, Shahjahan (2011) Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling. In: International Conference on Materials Processing Technology (MAPT 2011), 2-3 June 2011, Phuket, Thailand. http://mapt2011.kmutt.ac.th/
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 Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
description	Enhanced weld cooling via forced convection using cryogenic cooling technique is an option for controlling grain growth in the HAZ of ferritic stainless steel and hence improves weld ductility. However, this technique probably alters the martensite distribution in the high-temperature heat affected zone (HTHAZ) which is a critical constituent in analyzing susceptibility to sensitization in ferritic stainless steel grades. In the present work, forced convection weld cooling of AISI 430 ferritic stainless steel weld using cryogenic liquid is undertaken and the effect on sensitization is reported. The study indicates that cryogenic cooling increases the cooling rate in the HTHAZ and reduces the martensite volume percent by an average of 20%. This reduction in martensite content in the HTHAZ increases the level of ditched structure in cryogenic-treated welds. There are more ferrite-martensite ditched grain boundaries in cryo-treated welds than are in conventional welds. Though, the cryo-treated welds exhibit greater ditched boundary, the structure is still acceptable since no single grain boundary is completely surrounded by ditches.
format	Conference or Workshop Item
author	Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan
author_facet	Amuda, Muhammed Olawale Hakeem Mridha, Shahjahan
author_sort	Amuda, Muhammed Olawale Hakeem
title	Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
title_short	Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
title_full	Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
title_fullStr	Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
title_full_unstemmed	Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
title_sort	exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling
publishDate	2011
url	http://irep.iium.edu.my/9697/ http://irep.iium.edu.my/9697/ http://irep.iium.edu.my/9697/1/mohamuda_smridha_MAPT2011%282%29_conferenceproceedings.pdf
first_indexed	2023-09-18T20:19:18Z
last_indexed	2023-09-18T20:19:18Z
_version_	1777407999032164352

Exploratory study of sensitization in ferritic stainless steel welds produced via cryogenic cooling

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