Microstructural and ultrasonic characterization of 2101 lean duplex stainless steel welded joint

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• 作者：Alberto Ruiz^a ; ^{alruiz@umich.mx} ; Kevin Jesú ; s Fuentes-Corona^a ; ^b ; Victor H. Ló ; pez^a ; Carlos A. Leó ; n^a
• 关键词：Ultrasonic wave ; Attenuation coefficient ; Beam scattering ; Vickers microhardness ; Weld microstructure
• 刊名：Applied Acoustics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：117
• 期：part_PA
• 页码：12-19
• 全文大小：3118 K
• 卷排序：117

文摘

Effect of multiple welding pass on microstructure and mechanical properties of LDSS welds is studied. Ultrasonic measurement is used to characterize the effect microstructure on the attenuation coefficient of ultrasonic longitudinal waves. High microhardness values are found in welding regions with intergranular austenite. Ultrasonic c-scan images exhibit a good correlation with microhardness maps and both images resemble the macrograph of the weld.