Magnetic evaluation of microstructures and strength of eutectoid steel

被引：30

作者：

Byeon, JW ^{[1
]}

Kwun, SI

机构：

[1] Korea Univ, Res Inst Engn & Technol, Seoul 136701, South Korea

[2] Korea Univ, Div Mat Sci & Engn, Seoul 136701, South Korea

来源：

MATERIALS TRANSACTIONS | 2003年 / 44卷 / 10期

关键词：

eutectoid steel; pearlite interlamellar spacing; microstructure; magnetic parameter; nondestructive evaluation;

D O I：

10.2320/matertrans.44.2184

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructures and strength of variously heat treated eutectoid steel were evaluated by magnetic property measurements. Isothermal transformation, continuous cooling or spheroidization heat treatment was performed to produce various microstructures. Microstructural parameters (phase, pearlite interlamellar spacing), mechanical properties (fracture strength) and magnetic parameters (coercivity, remanence, hysteresis loss, saturation magnetization) were measured to investigate the relationships among these parameters. Coercivity and remanence were observed to be high in order of martensite, pearlite and ferrite phase. The linear decrease of coercivity and remanence with the interlamellar spacing and the linear increase of those with fracture strength of pearlitic eutectoid steel were found. Coercivity and remanence were suggested as potential magnetic parameters for discriminating phases and quantitatively assessing the pearlite interlamellar spacing as well as strength of eutectoid steel.

引用

页码：2184 / 2190

页数：7

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