A Screening Approach for Rapid Qualitative Evaluation of Residual-Stress States – Application to Laser-Hardened Microalloyed Steel
| Autor: | Andreas Fischer, Thomas Niendorf, Berthold Scholtes |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
0209 industrial biotechnology
Materials science Context (language use) 02 engineering and technology engineering.material Industrial and Manufacturing Engineering law.invention 020901 industrial engineering & automation Optical microscope law Residual stress Laser treatment martensitische Phasenumwandlung martensitic phase transformation Materials Chemistry Composite material Case hardening optical microscopy optische Mikroskopie mikrolegierte Stähle Metals and Alloys 021001 nanoscience & nanotechnology Laser Laserhärten microalloyed steels Optische Nahfeldmikroskopie engineering Microalloyed steel Röntgenbeugung 0210 nano-technology |
| DOI: | 10.17170/kobra-202305107997 |
| Popis: | Surface hardening and compressive residual stresses are keys to superior part performance in numerous applications. In this context the development of advanced laser surface treatments for new materials and complex sample shapes is a time consuming process. Eventually, determination of residual stress states by means of X-ray diffraction in the whole surface and subsurface region, respectively, is one of the main time consuming facors in terms of characterization. In many applications the provision of an adequate distribution of compressive residual stresses, however, is needed for approval of parts. In the present work it is shown that micrograph analysis can be used to provide the zero transition zone of residual stresses revealing the relevant penetration depth of the laser treatment conducted. One single surface stress scan employing standard techniques only is needed to verify the sign of residual stresses induced by the treatment. In fact, the screening approach introduced in this study enables time- and cost-efficent development processes for studying new sets of laser hardening parameters. |
| Databáze: | OpenAIRE |
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