Abstract
Physicomechanical properties and parameters of the resonance electromagnetic–acoustic conversion (EMAC) are studied as functions of the heat treatment regimes for high-strength rust-resisting steel of the 13Kh15N4AMZSh austenitic-martensitic sort. It is shown that variations of the coercive force, the saturation magnetization, the specific electrical conductivity and the hardness as functions of the quenching temperature are due to the austenite–martensite ratio and the degree of alloying. A deviation from the optimum quenching temperature (1070°C) by ± 50°C affects only slightly the values of the above characteristics. The quality monitoring of products tempered on the interval 100–500°C is possible by measuring the resonance frequency of the EMAC signal. The optimum variant of the tempering quality monitoring is that on the basis of measuring two parameters: the coercive force (or the residual induction) and one of the EMAC-signal parameters (signal amplitude, quality, or resonance frequency).
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Somova, V.M., Zadvorkin, S.M. & Solomein, M.N. Physicomechanical Properties of the Rust-Resisting Austenitic–Martensitic Steel 13Kh15N4AMZSh as Functions of the Heat Treatment Regimes. Russian Journal of Nondestructive Testing 38, 465–471 (2002). https://doi.org/10.1023/A:1022135211732
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DOI: https://doi.org/10.1023/A:1022135211732