Work

Characterization of Microstructure Variations by Laser-Ultrasound during and after the Heat Treatment of Metals

Year: 2021

Type: conference-paper

Abstract: We demonstrate the potential of laser ultrasound for non-destructive testing applications in steel production and processing in two use cases: (1) Imaging of the grain structure transition between the thermally hardened surface and the unaffected core material with a comparison to sectional views by an optical microscope. We found very good correlation between the laser ultrasonic image and the microscopic view at the cross section. (2) In situ monitoring of Poisson’s ratio of steel sheets during thermal processes by evaluation of resonant frequencies of Lamb waves. In our ongoing research the results will be correlated to metallurgical properties of interest.

Source: IOP Conference Series Materials Science and Engineering

DOI: 10.1088/1757-899x/1178/1/012050

Authors: E Scherleitner, C Kerschbaummayr, W Haderer, B Reitinger, T Mitter, C Gruensteidl

Institutions: Research Center for Non Destructive Testing (Austria), Voestalpine (Austria)

Language: English

Topic: Ultrasonics and Acoustic Wave Propagation

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: Österreichische Forschungsförderungsgesellschaft, Bundesministerium für Digitalisierung und Wirtschaftsstandort

Award: G7205264258