Entries by admin

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.

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.

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 […]