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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Relation Between Magnetic Barkhausen Noise and Hardness for Jominy Quench Tests in SAE 4140 and 6150 Steels

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Author(s):
Franco, Freddy A. [1] ; Gonzalez, M. F. R. [2] ; de Campos, M. F. [3] ; Padovese, L. R. [4]
Total Authors: 4
Affiliation:
[1] Soc Educ Santa Catarina, BR-89206001 Joinville, SC - Brazil
[2] Univ Sao Paulo, Sch Engn, Dept Met & Mat Engn, BR-05508030 Sao Paulo - Brazil
[3] Univ Fed Fluminense, EEIMVR, BR-27255125 Volta Redonda, RJ - Brazil
[4] Univ Sao Paulo, Sch Engn, Dept Mech Engn, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF NONDESTRUCTIVE EVALUATION; v. 32, n. 1, p. 93-103, MAR 2013.
Web of Science Citations: 33
Abstract

The nondestructive Magnetic Barkhausen Noise (MBN) technique was applied for the evaluation of SAE 4140 and SAE 6150 steels after a Jominy end-quench test. Microstructures were also characterized by SEM (Scanning Electron Microscope) and hardness tests. MBN measurements were performed on the same sample regions at three excitation frequencies. Different parameters of the measured signals (signal peak position and height, and Root mean square) were calculated. A relationship between mechanical hardness and MBN parameters was found for both materials, with the best correlation coefficient being found in low excitation frequency range. (AU)