Non-destructive Characterization of Pearlite Spheroidisation by Magnetic Barkhausen Noise Method
The aim of this study is to investigate the effects of spheroidising heat treatment on steels by Magnetic Barkhausen Noise (MBN) method. Various series of specimens consisting of either lamellar pearlite or partially/completely spheroidised carbides were produced from SAE 1060 steel by appropriate heat treatments. Samples were characterized by metallographic examinations and MBN measurements. The results showed that the evolution of microstructure as a result of spheroidisation, 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.
Spheroidising Microstructure Steel Magnetic Barkhausen Noise
C. Hakan G(U)R Kemal DAVUT
Metallurgical and Materials Eng. Dept. Middle East Technical Univ. Ankara, Turkey Welding Technology and NDT Research/Application Center, METU-Ankara, Turkey
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2517-2522
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）