Critical assessment 42: acicular ferrite formation and its influence on weld metal and heat-affected zone properties of steels

Toughness and fatigue resistance of welds and associated heat-affected zones (HAZs) in high-strength steels are important design parameters in structural applications. Acicular ferrite microstructures, which can be achieved through control of weld process and nucleant (inclusions or precipitates) ch...

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Bibliographic Details
Published inMaterials science and technology Vol. 38; no. 17; pp. 1425 - 1433
Main Authors Cho, Lawrence, Tselikova, Anastasiya, Holtgrewe, Kelsey, De Moor, Emmanuel, Schmidt, Rolf, Findley, Kip O.
Format Journal Article
LanguageEnglish
Published London, England Taylor & Francis 22.11.2022
SAGE Publications
Subjects
Acicular ferrite
fatigue
heat affected zone
toughness
weld
weld
Acicular ferrite
fatigue
toughness
heat affected zone
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Summary:Toughness and fatigue resistance of welds and associated heat-affected zones (HAZs) in high-strength steels are important design parameters in structural applications. Acicular ferrite microstructures, which can be achieved through control of weld process and nucleant (inclusions or precipitates) characteristics, are often regarded as key to enhancing weld metal and HAZ properties of welded steels. This paper addresses the transformation characteristics of acicular ferrite related to alloying and weld processing as well as the specific role of acicular ferrite in weld performance, along with future research needs to identify weld processes suitable to specific alloying strategies.
ISSN:0267-0836
1743-2847
DOI:10.1080/02670836.2022.2088163