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Non-destructive characterisation of laser hardened steels. Part 2: Metallography and residual stresses.
- Source :
-
Insight: Non-Destructive Testing & Condition Monitoring . Jun2017, Vol. 59 Issue 6, p311-317. 7p. - Publication Year :
- 2017
-
Abstract
- Surface laser hardening of steels is a well-established industrial technology. The surface of the specimen is scanned with a high-power laser beam along the trace to be hardened. The rapid cooling due to the non-heated surroundings of the laser-treated zones leads to local hardening of the material. Non-destructive evaluation of some mechanical properties (hardness, residual stresses, etc) of the hardened region and the heat-affected zone are of technological importance. A previous paper reported non-destructive testing (NDT) experiments (by scanning of the specimens) made with the 3MA-II (Multiparameter Micromagnetic Microstructure and Stress Analysis) equipment developed by the Fraunhofer Institute for Non-Destructive Testing (IZFP), Saarbrücken. This contribution presents an X-ray diffraction evaluation of the residual stresses in laser-hardened SAE 1045 steels and metallographic studies of the affected areas. The results are compared with the previously reported 3MA-II output. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NONDESTRUCTIVE testing
*LASER hardening
*SURFACE hardening
*X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 13542575
- Volume :
- 59
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Insight: Non-Destructive Testing & Condition Monitoring
- Publication Type :
- Academic Journal
- Accession number :
- 123380235
- Full Text :
- https://doi.org/10.1784/insi.2017.59.6.311