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Application of magnetic hysteresis loop method to determine prior austenite grain size in plain carbon steels

Journal: Journal of Magnetism and Magnetic Materials Publication date: 22 January 2019 Abstract: The present investigation has been performed to explore the ability of magnetic hysteresis loop technique to detect prior austenite grain size changes due to various austenitizing conditions applied in plain carbon steels.

Improving nondestructive characterization of dual phase steels using data fusion

Journal: Journal of Magnetism and Magnetic Materials Publication date: 22 March 2018 Abstract: The aim of this paper is to introduce a novel methodology for nondestructive determination of microstructural and mechanical properties (due to the various heat treatments), as well as thickness variations (as a result of corrosion effect) of dual phase steels.

A predictive model for characterizing hardness of D2 tool steel by eddy current method: A statistical optimization approach

Journal: Research in Nondestructive Evaluation Publication date: 22 Feb 2018 Abstract: Response surface modeling is a well-grounded method to identify empirical relationships between factors involved in engineering experiments. This paper presents a novel mathematical/statistical approach to design an optimal predictive model to evaluate hardness by eddy current method.

Evaluation of microstructure and mechanical properties of high-strength bainitic cast iron using an electromagnetic sensor

Journal: Metal Science and Heat Treatment Publication date: 30 September 2017 Abstract: High-strength bainitic cast iron is studied after isothermal hardening at 340°C for from 0.5 to 5 h with the use of a non-destructive eddy-current method for monitoring the microstructure and mechanical properties.

A RSM-based predictive model to characterize heat treating parameters of D2 steel using combined Barkhausen noise and hysteresis loop methods

Journal: Journal of Magnetism and Magnetic Materials Publication date: 6 March 2017 Abstract: Austenitizing and tempering temperatures are the effective characteristics in heat treating process of AISI D2 tool steel. Therefore, controlling them enables the heat treatment process to be designed more accurately which results in more balanced mechanical properties.

Microstructural Characterization of Quenched AISI D2 Tool Steel Using Magnetic/Electromagnetic Nondestructive Techniques

Journal: IEEE Transactions on Magnetics Publication date: 30 April 2015 Abstract: In the past decade, nondestructive electromagnetic techniques have been extensively used for the characterization of materials. In this paper, the relation between the microstructural/mechanical characteristics of D2 tool steel with magnetic and electrical properties and eddy current (EC) test outputs has been established.

Applications of impedance plane and magnetic differential permeability in microstructural characterization of AISI D2 tool steel

Journal: IJE Transactions B Publication date: 15 February 2015 Abstract: Two nondestructive electromagnetic/magnetic techniques including hysteresis loop and eddy current methodologies have been used to characterize microstructural changes of AISI D2 cold work tool steel as a result of quench and tempering treatments.

Electromagnetic nondestructive evaluation of tempering process in AISI D2 tool steel

Journal: Journal of Magnetism and Magnetic Materials Publication date: 7 February 2015 Abstract: The present paper investigates the potential of using eddy current technique as a reliable nondestructive tool to detect microstructural changes during the different stages of tempering treatment in AISI D2 tool steel.

Assessment of retained austenite in AISI D2 tool steel using magnetic hysteresis and Barkhausen noise parameters

Journal: Journal of Materials Engineering and Performance Publication date: 21 January 2015 Abstract: Inaccurate heat treatment process could result in excessive amount of retained austenite, which degrades the mechanical properties, like strength, wear resistance, and hardness of cold work tool steel parts. Thus, to control the mechanical properties, quantitative measurement of the retained austenite is […]

Nondestructive evaluation of mechanical properties of ductile cast iron parts using eddy current signals

Journal: Iranian Journal of Science and Technology-Transactions of Mechanical Engineering Publication date: 16 June 2014 Abstract: The present research investigates improvement of Eddy Current (EC) technique as a nondestructive method for measurement of ductile cast iron microstructural and mechanical characteristics.