Vol. 7, No. 10, 2012

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ISSN: 1559-3959
Measurement of elastic properties of AISI 52100 alloy steel by ultrasonic nondestructive methods

Mohammad Hamidnia and Farhang Honarvar

Vol. 7 (2012), No. 10, 951–961
Abstract

In certain applications, it is important to measure the mechanical properties of steel with high accuracy. These measurements are usually performed by destructive processes, in which the test sample is destroyed. Destructive techniques cannot detect the minuscule changes made in the mechanical properties of steel during heat treatment processes. Ultrasonic nondestructive testing is an alternative method that can be used for measuring the mechanical properties of steel more precisely. In this paper, the ultrasonic method is used for measuring the elastic properties of AISI 52100 steel samples which are heat treated at different levels. Each sample has its specific microstructure and hardness due to the heat treatment process it has gone through. The elastic properties of each sample are obtained by measuring the velocities of longitudinal and shear waves in each sample. Comparison of the results obtained from ultrasonic measurements with those available in reference tables shows that the ultrasonic technique can measure the elastic properties of AISI 52100 samples with high accuracy. The ultrasonic technique also shows that it can identify the tempered martensite embrittlement zone in AISI 52100 samples.

Keywords
elastic properties, ultrasonic nondestructive method, AISI 52100 steel, heat treatment
Milestones
Received: 27 June 2012
Revised: 22 October 2012
Accepted: 30 October 2012
Published: 1 March 2013
Authors
Mohammad Hamidnia
NDE Lab., Faculty of Mechanical Engineering
K. N. Toosi University of Technology
Pardis St., MollaSadra Ave., Vanak Sq.
Tehran
Iran
Farhang Honarvar
NDE Lab
Faculty of Mechanical Engineering
K. N. Toosi University of Technology
Pardis St., MollaSadra Ave., Vanak Sq.
Tehran
Iran