Monitoring the Microstructural Evolution in Spheroidized Steels by Magnetic Barkhausen Noise Measurements

被引：14
|
作者：
Davut, Kemal [2 ]
Gur, C. Hakan [1 ]
机构：
[1] Middle E Tech Univ, Met & Mat Engn Dept, TR-06531 Ankara, Turkey
[2] Max Planck Inst Eisenforsch GmbH, Dept Microstruct Phys & Met Forming, D-4000 Dusseldorf, Germany
来源：
JOURNAL OF NONDESTRUCTIVE EVALUATION | 2010年 / 29卷 / 04期
关键词：
Steel; Spheroidizing; Microstructure; Magnetic Barkhausen Noise; PEARLITE SPHEROIDIZATION; NONDESTRUCTIVE EVALUATION; FERROMAGNETIC MATERIALS; CARBON-STEELS; DEFORMATION; EMISSION; HARDNESS; IRON;
D O I：
10.1007/s10921-010-0082-4
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aim of this study is to monitor nondestructively the degree of spheroidization in steels by Magnetic Barkhausen Noise (MBN) method. Various series of specimens consisting of either lamellar pearlite or partially/completely spheroidized carbides were produced from AISI 1060 steel by appropriate heat treatments. All specimens were characterized by metallographic examinations, hardness and MBN measurements. The results show that MBN signals are very sensitive to the variations in the microstructure caused by the spheroidizing heat treatment. The change of microstructure, from coarse lamellar carbides to uniformly dispersed spherical carbides in ferrite matrix, is reflected as higher Barkhausen activity due to less effective pinning of domain walls.
引用
收藏
页码：241 / 247
页数：7
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