Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves
Forgings produced in industry are an irreplaceable basis for subsequent elaborating on machine tools. The quality of the semi-finished product produced by forging is a necessary prerequisite for ensuring the final quality of the final product because the forging can produce some defects. The present...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/9/2406 |
| _version_ | 1797535252527185920 |
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| author | Ján Moravec Peter Bury František Černobila |
| author_facet | Ján Moravec Peter Bury František Černobila |
| author_sort | Ján Moravec |
| collection | DOAJ |
| description | Forgings produced in industry are an irreplaceable basis for subsequent elaborating on machine tools. The quality of the semi-finished product produced by forging is a necessary prerequisite for ensuring the final quality of the final product because the forging can produce some defects. The presented paper is aimed at investigation of selected characteristics of forging steel specimens for various levels of their relative reduction. Ultrasound testing belongs to methods for investigation of structure changes, including defects. Experimental investigation, using both the attenuation and velocity measurements, verify that the reduction of specimens’ material can have an effect on the propagation of ultrasound waves passing through the specimen body. The procedure of steel samples forging corresponds accordingly to the process of their hardening. The increase of toughness after relative reduction of forging in the range of 10–50% is with highest probability caused by the strength matrices development due to the relatively important deformation hardening. It is evident that the deformation hardening is almost the same after every 10% addition of relative reduction. Experiments are supplemented by Barkhausen noise detection and metallographic characteristics of the samples. While differences between the Barkhausen noise values are in principle relatively small and significant differences are only in the values of the position of the envelope, there is maximum coincidence with ultrasonic investigation. |
| first_indexed | 2024-03-10T11:41:53Z |
| format | Article |
| id | doaj.art-eb270f0573e146a6a7cd0c710c414cf7 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:41:53Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-eb270f0573e146a6a7cd0c710c414cf72023-11-21T18:26:42ZengMDPI AGMaterials1996-19442021-05-01149240610.3390/ma14092406Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic WavesJán Moravec0Peter Bury1František Černobila2Department of Technological Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Physics, Faculty of Electrical Engineering and Information Technology, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Physics, Faculty of Electrical Engineering and Information Technology, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaForgings produced in industry are an irreplaceable basis for subsequent elaborating on machine tools. The quality of the semi-finished product produced by forging is a necessary prerequisite for ensuring the final quality of the final product because the forging can produce some defects. The presented paper is aimed at investigation of selected characteristics of forging steel specimens for various levels of their relative reduction. Ultrasound testing belongs to methods for investigation of structure changes, including defects. Experimental investigation, using both the attenuation and velocity measurements, verify that the reduction of specimens’ material can have an effect on the propagation of ultrasound waves passing through the specimen body. The procedure of steel samples forging corresponds accordingly to the process of their hardening. The increase of toughness after relative reduction of forging in the range of 10–50% is with highest probability caused by the strength matrices development due to the relatively important deformation hardening. It is evident that the deformation hardening is almost the same after every 10% addition of relative reduction. Experiments are supplemented by Barkhausen noise detection and metallographic characteristics of the samples. While differences between the Barkhausen noise values are in principle relatively small and significant differences are only in the values of the position of the envelope, there is maximum coincidence with ultrasonic investigation.https://www.mdpi.com/1996-1944/14/9/2406forging metal specimensultrasonic investigationBarkhausen noisehidden defects |
| spellingShingle | Ján Moravec Peter Bury František Černobila Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves Materials forging metal specimens ultrasonic investigation Barkhausen noise hidden defects |
| title | Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves |
| title_full | Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves |
| title_fullStr | Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves |
| title_full_unstemmed | Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves |
| title_short | Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves |
| title_sort | investigation of forging metal specimens of different relative reductions using ultrasonic waves |
| topic | forging metal specimens ultrasonic investigation Barkhausen noise hidden defects |
| url | https://www.mdpi.com/1996-1944/14/9/2406 |
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