Microstructure and mechanical properties of metal powder treated AISI-430 FSS welds

M. O.H. Amuda; F. T. Lawal; M. A. Onitiri; E. T. Akinlabi; S. Mridha

doi:10.4018/IJMMME.2018100104

Microstructure and mechanical properties of metal powder treated AISI-430 FSS welds

M. O.H. Amuda, F. T. Lawal, M. A. Onitiri, E. T. Akinlabi, S. Mridha

Mechanical Engineering Science

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

1 Citation (Scopus)

Abstract

An innovative yet simple technique for the inoculation of the weld pool of commercial AISI 430 Ferritic Stainless Steel (FSS) with metal powders for grain refinement is discussed. Aluminum or titanium powder in varying amounts introduced into the weld pool via a powder preplacement technique was melted under a tungsten inert gas (TIG) torch. This strategy of inoculating the welds offers dual benefits of grain refinement and constriction in the weld geometry. The addition of the metal powders constricts the HAZ by as much as 50% of the conventional weld providing a grain refinement index (GRI) of about 0.8 in titanium powder treated welds. It equally emerged that weld property is not influenced by the grain size alone but equally by the amount of delta ferrite in the microstructure.

Original language	English
Pages (from-to)	63-83
Number of pages	21
Journal	International Journal of Manufacturing, Materials, and Mechanical Engineering
Volume	8
Issue number	4
DOIs	https://doi.org/10.4018/IJMMME.2018100104
Publication status	Published - 2018

Keywords

Delta Ferrite
Elemental Metal Powder
Ferritic Stainless Steel Welds
Grain Refinement Index
Preplacement Technique
Tungsten Inert Gas Torch Melting

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering

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10.4018/IJMMME.2018100104

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title = "Microstructure and mechanical properties of metal powder treated AISI-430 FSS welds",

abstract = "An innovative yet simple technique for the inoculation of the weld pool of commercial AISI 430 Ferritic Stainless Steel (FSS) with metal powders for grain refinement is discussed. Aluminum or titanium powder in varying amounts introduced into the weld pool via a powder preplacement technique was melted under a tungsten inert gas (TIG) torch. This strategy of inoculating the welds offers dual benefits of grain refinement and constriction in the weld geometry. The addition of the metal powders constricts the HAZ by as much as 50% of the conventional weld providing a grain refinement index (GRI) of about 0.8 in titanium powder treated welds. It equally emerged that weld property is not influenced by the grain size alone but equally by the amount of delta ferrite in the microstructure.",

keywords = "Delta Ferrite, Elemental Metal Powder, Ferritic Stainless Steel Welds, Grain Refinement Index, Preplacement Technique, Tungsten Inert Gas Torch Melting",

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

note = "Publisher Copyright: Copyright {\textcopyright} 2018, IGI Global.",

year = "2018",

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AU - Lawal, F. T.

AU - Onitiri, M. A.

AU - Akinlabi, E. T.

AU - Mridha, S.

PY - 2018

Y1 - 2018

N2 - An innovative yet simple technique for the inoculation of the weld pool of commercial AISI 430 Ferritic Stainless Steel (FSS) with metal powders for grain refinement is discussed. Aluminum or titanium powder in varying amounts introduced into the weld pool via a powder preplacement technique was melted under a tungsten inert gas (TIG) torch. This strategy of inoculating the welds offers dual benefits of grain refinement and constriction in the weld geometry. The addition of the metal powders constricts the HAZ by as much as 50% of the conventional weld providing a grain refinement index (GRI) of about 0.8 in titanium powder treated welds. It equally emerged that weld property is not influenced by the grain size alone but equally by the amount of delta ferrite in the microstructure.

AB - An innovative yet simple technique for the inoculation of the weld pool of commercial AISI 430 Ferritic Stainless Steel (FSS) with metal powders for grain refinement is discussed. Aluminum or titanium powder in varying amounts introduced into the weld pool via a powder preplacement technique was melted under a tungsten inert gas (TIG) torch. This strategy of inoculating the welds offers dual benefits of grain refinement and constriction in the weld geometry. The addition of the metal powders constricts the HAZ by as much as 50% of the conventional weld providing a grain refinement index (GRI) of about 0.8 in titanium powder treated welds. It equally emerged that weld property is not influenced by the grain size alone but equally by the amount of delta ferrite in the microstructure.

KW - Delta Ferrite

KW - Elemental Metal Powder

KW - Ferritic Stainless Steel Welds

KW - Grain Refinement Index

KW - Preplacement Technique

KW - Tungsten Inert Gas Torch Melting

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JF - International Journal of Manufacturing, Materials, and Mechanical Engineering

IS - 4

ER -

Microstructure and mechanical properties of metal powder treated AISI-430 FSS welds

Abstract

Keywords

ASJC Scopus subject areas

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