Influences of Energy Input and Metal Powder Addition on Carbide Precipitation in AISI 430 Ferritic Stainless Steel Welds

M. O.H. Amuda; E. T. Akinlabi; S. Mridha

doi:10.1016/j.matpr.2017.01.017

Influences of Energy Input and Metal Powder Addition on Carbide Precipitation in AISI 430 Ferritic Stainless Steel Welds

M. O.H. Amuda, E. T. Akinlabi, S. Mridha

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

In the present work, 16% chromium AISI 430 ferritic stainless steel weld produced under different conditions of energy input and metal powder addition using TIG torch melting is investigated for carbide precipitation. A Box Behnken experimental design paradigm is invoked with current, speed and metal powder concentration as the primary variables while type of powder is the categorical variable. The result indicates that for a given concentration of metal powder in the melt pool, the sensitized geometry increases with energy input. Titanium as well as the mixture of aluminum and titanium powders reduces the width of the sensitized zone while aluminum powder increases the width of the zone. Titanium powder prevents the development of completely ditched structure in the high temperature heat affected zone (HTHAZ) whereas aluminum powder accelerates the formation of ditched structure in the HAZ.

Original language	English
Pages (from-to)	234-243
Number of pages	10
Journal	Materials Today: Proceedings
Volume	4
Issue number	2
DOIs	https://doi.org/10.1016/j.matpr.2017.01.017
Publication status	Published - 2017
Externally published	Yes

Keywords

Carbide precipitation
Energy input
HTHAZ, AISI 430 ferritic stainless steel welds
Metal powder addition

ASJC Scopus subject areas

General Materials Science

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10.1016/j.matpr.2017.01.017

Cite this

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title = "Influences of Energy Input and Metal Powder Addition on Carbide Precipitation in AISI 430 Ferritic Stainless Steel Welds",

abstract = "In the present work, 16% chromium AISI 430 ferritic stainless steel weld produced under different conditions of energy input and metal powder addition using TIG torch melting is investigated for carbide precipitation. A Box Behnken experimental design paradigm is invoked with current, speed and metal powder concentration as the primary variables while type of powder is the categorical variable. The result indicates that for a given concentration of metal powder in the melt pool, the sensitized geometry increases with energy input. Titanium as well as the mixture of aluminum and titanium powders reduces the width of the sensitized zone while aluminum powder increases the width of the zone. Titanium powder prevents the development of completely ditched structure in the high temperature heat affected zone (HTHAZ) whereas aluminum powder accelerates the formation of ditched structure in the HAZ.",

keywords = "Carbide precipitation, Energy input, HTHAZ, AISI 430 ferritic stainless steel welds, Metal powder addition",

author = "Amuda, {M. O.H.} and Akinlabi, {E. T.} and S. Mridha",

year = "2017",

doi = "10.1016/j.matpr.2017.01.017",

language = "English",

volume = "4",

pages = "234--243",

journal = "Materials Today: Proceedings",

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publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Influences of Energy Input and Metal Powder Addition on Carbide Precipitation in AISI 430 Ferritic Stainless Steel Welds

AU - Amuda, M. O.H.

AU - Akinlabi, E. T.

AU - Mridha, S.

PY - 2017

Y1 - 2017

N2 - In the present work, 16% chromium AISI 430 ferritic stainless steel weld produced under different conditions of energy input and metal powder addition using TIG torch melting is investigated for carbide precipitation. A Box Behnken experimental design paradigm is invoked with current, speed and metal powder concentration as the primary variables while type of powder is the categorical variable. The result indicates that for a given concentration of metal powder in the melt pool, the sensitized geometry increases with energy input. Titanium as well as the mixture of aluminum and titanium powders reduces the width of the sensitized zone while aluminum powder increases the width of the zone. Titanium powder prevents the development of completely ditched structure in the high temperature heat affected zone (HTHAZ) whereas aluminum powder accelerates the formation of ditched structure in the HAZ.

AB - In the present work, 16% chromium AISI 430 ferritic stainless steel weld produced under different conditions of energy input and metal powder addition using TIG torch melting is investigated for carbide precipitation. A Box Behnken experimental design paradigm is invoked with current, speed and metal powder concentration as the primary variables while type of powder is the categorical variable. The result indicates that for a given concentration of metal powder in the melt pool, the sensitized geometry increases with energy input. Titanium as well as the mixture of aluminum and titanium powders reduces the width of the sensitized zone while aluminum powder increases the width of the zone. Titanium powder prevents the development of completely ditched structure in the high temperature heat affected zone (HTHAZ) whereas aluminum powder accelerates the formation of ditched structure in the HAZ.

KW - Carbide precipitation

KW - Energy input

KW - HTHAZ, AISI 430 ferritic stainless steel welds

KW - Metal powder addition

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DO - 10.1016/j.matpr.2017.01.017

M3 - Article

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JF - Materials Today: Proceedings

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ER -

Influences of Energy Input and Metal Powder Addition on Carbide Precipitation in AISI 430 Ferritic Stainless Steel Welds

Abstract

Keywords

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