The nature of acicular ferrite in HSLA steel weld metals

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1982 English Publisher:Springer Science and Business Media LLCJournal:Journal of Materials Science, volume 17, pages 732-740 (issn: 0022-2461, eissn: 1573-4803,

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Authors: R. A. Ricks; P. R. Howell; G. S. Barritte;

doi: 10.1007/bf00540369

The nature of acicular ferrite in HSLA steel weld metals

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Abstract

In this paper, the nature of the fine interlocking acicular ferrite microstructure in HSLA steel weld metals is investigated. The results strongly suggest the acicular ferrite is comprised of intragranularly nucleated Widmanstatten ferrite. Further, it is shown that the active nucleation sites for this ferritic product are weld metal inclusions. Sympathetic nucleation then takes place which leads eventually to the fine, interlocking microstructure which is a characteristic of acicular ferrite.

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University of Cambridge
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