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A. V. Makarov, E. S. Gorkunov, L. Kh. Kogan, I. Yu. Malygina, A. L. Osintseva

EDDY-CURRENT TESTING OF THE STRUCTURE, HARDNESS AND ABRASIVE WEAR RESISTANCE OF LASER-HARDENED AND SUBSEQUENTLY TEMPERED HIGH-STRENGTH CAST IRON

DOI: 10.17804/2410-9908.2015.6.090-103

Features of eddy-current testing to control the structure, hardness and the abrasive wear resistance of high-strength cast iron (3.6 С, 2.15 Si, 1.4 Mn, 0.07 S, 0.06 P, base – Fe, mass. %) subjected to hardening using continuous laser radiation are investigated. The distribution of hardness, retained austenite content, wear rate and indicated eddy-current values through hardened layer depth is analyzed. The changes in the reading of the eddy-current instrument depend mainly on changes in retained austenite content. The influence of tempering in the interval from 100 °C to 600 °C on characteristics of laser-hardened layer is investigated. The possibility of eddy-current testing of the abrasive wear resistance of laser-hardened high-strength cast iron in the interval from 100 °C to 600 °C is established.

Keywords: laser treatment, tempering, hardened layer thickness, structure, hardness, abrasive wear, eddy-current testing

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Article reference

Eddy-Current Testing of the Structure, Hardness and Abrasive Wear Resistance of Laser-Hardened and Subsequently Tempered High-Strength Cast Iron / A. V. Makarov, E. S. Gorkunov, L. Kh. Kogan, I. Yu. Malygina, A. L. Osintseva // Diagnostics, Resource and Mechanics of materials and structures. - 2015. - Iss. 6. - P. 90-103. -
DOI: 10.17804/2410-9908.2015.6.090-103. -
URL: http://eng.dream-journal.org/issues/content/article_66.html
(accessed: 06/22/2024).

 

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