Varying ultrasonic attenuation in welds with nickel filler metal

Autor:	V.A.M. Luprano, G. Montagna
Rok vydání:	1994
Předmět:	Materials science Filler metal Scattering Mechanical Engineering Metallurgy Metals and Alloys chemistry.chemical_element Acoustic microscopy Welding Laser Indentation hardness law.invention Nickel chemistry Mechanics of Materials law Materials Chemistry Cathode ray
Zdroj:	Journal of Alloys and Compounds. :628-631
ISSN:	0925-8388
DOI:	10.1016/0925-8388(94)90583-5
Popis:	Electron beam welds with two different contents of nickel filler metal were observed by scanning laser acoustic microscopy (SLAM). Acoustic images at 10 and 30 MHz were obtained. The different ultrasonic attenuation along the welds was ascribed to the different metallographic structure and to scattering by grains. Optical images have also shown a different surface structure and morphology in the welds. Therefore microhardness measurements and ultrasonic attenuation seem to follow an equivalent profile along the same weld lines. In conclusion, SLAM proves to be an effective non-destructive tool in the investigation of structural changes and mechanical properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b81ec71b63245d23aca964794854e35f https://doi.org/10.1016/0925-8388(94)90583-5 Zobrazit plný text záznamu