Supersonic testing of mechanical property uniformity in hot-rolled steel

Poletika, I. M.; Egorova, N. M.; Kulikova, O. A.; Зуев, Л. Б.

doi:10.1134/1.1356481

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Such a test piece can be used to determine the relationship between the surface hardness and ultrasound velocity for this test piece considered as a representative one. A set of test pieces can be taken straight from a production line to find the aggregate trend and the boundaries for production variations statistically [17][18][19]. Finally, several test pieces can be prepared in order to vary a particular property only whilst keeping the other properties the same (e.g., varying test piece structure [14,20] or carbon content [21] or process parameters [14,22]).…”

Section: Relating Ultrasonic Velocity To Surface Hardness: Some Previously Developed Techniques and Resultsmentioning

confidence: 99%

Experimental Ultrasonic Assessment of Steel Induction Hardening by Measuring Two Distinct Times-of-Flight

Chen¹,

Kalashnikov

Challis³

et al. 2013

ujms

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Ultrasonic NDE of case hardening of steel parts presents an attractive alternative to destructive assessment still used in industry. This experimental study showed that the ultrasonic assessment could be conducted by measuring two average times of flight across different dimensions of a hardened test sample. The consistently observed difference in the corresponding average ultrasound velocities was above the estimated accuracy of the measurements, and the scattered individual calculated values formed distinct clusters. The results were obtained by using a high resolution data acquisition instrument with the equivalent sampling frequency of 1.5 GHz and 512 averages, and differential measurements of the time of flight by determining zero crossings of the echo waveforms.

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Section: Relating Ultrasonic Velocity To Surface Hardness: Some Previously Developed Techniques and Resultsmentioning

confidence: 99%

Experimental Ultrasonic Assessment of Steel Induction Hardening by Measuring Two Distinct Times-of-Flight

Chen¹,

Kalashnikov

Challis³

et al. 2013

ujms

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“…This method has also been used for non-metallic materials, for example, for concrete [18,19] or polymers [20]. There is also a large number of studies on different metals [16,21,22]. For instance, Kennedy et al studied the influence of the martensite content on the ultrasonic velocity.…”

Section: Introductionmentioning

confidence: 99%

Correlating Ultrasonic Velocity in DC04 with Microstructure for Quantification of Ductile Damage

Wackenrohr,

Herbst,

Wöbbeking

et al. 2023

JMMP

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The detection of ductile damage by image-based methods is time-consuming and typically probes only small areas. It is therefore of great interest for various cold forming processes, such as sheet-bulk metal forming, to develop new methods that can be used during the forming process and that enable an efficient detection of ductile damage. In the present study, ductile damage in DC04 was examined using ultrasonic testing. First, different grain sizes were set by heat treatment. Subsequently, the sheet metal was formed by cold rolling. A clear correlation between the average void diameter and the measured ultrasonic velocity could be shown. The ultrasonic velocity showed a clear decrease when the average void size increased because of the increasing forming degree. The ultrasonic measurements were finally employed to calculate a damage parameter D to determine the amount of ductile damage in the microstructure for different grain sizes after cold rolling.

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