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Barkhausen noise response of three different welded duplex stainless steels

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)480-486
Number of pages7
JournalInsight
Volume58
Issue number9
DOIs
Publication statusPublished - 1 Sep 2016
Publication typeA1 Journal article-refereed

Abstract

An investigation was made into the Barkhausen noise responses of three duplex grades: a lean alloy LDX 2101, a conventional duplex 2205 and a super duplex 2507, in welded conditions. The aim was to study the influence of alloy chemistry and microstructure on the Barkhausen noise response. In addition, the residual stresses of the grades were measured by X-ray diffraction and the microstructure and hardness of the base materials and welds were determined. It was observed that the Barkhausen noise responses in the rolling direction and in the transverse direction were governed by the phase morphology of the materials. Only the root mean square of the Barkhausen noise burst seemed to be additionally dependent on the alloy chemistry through the hardness of the materials. Furthermore, the relationships between various characteristics of the Barkhausen noise burst measured in the rolling direction and the transverse direction and microstructural features are discussed.

Keywords

  • Barkhausen, Stainless steel, Welds

Publication forum classification

Field of science, Statistics Finland