Microstructure and tensile properties of high strength duplex ferrite-martensite (DFM) steels

被引：64

作者：

Chakraborti, P. C. ^{[1
]}

Mitra, M. K. ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Met & Mat Engn, Kolkata 700032, W Bengal, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 466卷 / 1-2期

关键词：

intercritical; microstructure; duplex ferrite-martensite; strength; ductility;

D O I：

10.1016/j.msea.2007.02.042

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Duplex ferrite-martensite (DFM) steels containing 38-80% martensite of varying morphologies were developed by batch intercritical annealing of a commercial variety vanadium bearing 0.2% C-Mn steel at different temperatures. Microstructures before intercritical annealing were found to control the morphological distribution of the phase constituents of the developed DFM steels. Tensile test results revealed best strength-ductility combination for finely distributed lamellar ferrite-martensite phase aggregate containing similar to 60% martensite developed from a prior martensitic structure. Taking consideration of the modified law of mechanical mixture the experimental tensile strength data of the developed DFM steels has been formulated with some success and very good estimation for tensile strengths of pure ferrite and low carbon martensite has been made from tensile strength data of DFM steels. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：123 / 133

页数：11

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