On the effect of the volume fraction on martensite on the tensile strength of dual-phase steel

Materials Science and Engineering Pub Date : 1988-04-01 DOI:10.1016/0025-5416(88)90232-7

A.K. Jena , M.C. Chaturvedi

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引用次数: 30

Abstract

Dual-phase steels were prepared from thoroughly homogenized Fe-1.5wt.%Mn-0.1wt.%C and Fe-1.5wwt.%Mn-0.2wt.%C steels by intercritical annealing at 720, 740, 760 and 780°C. Their tensile strengths and the volume fractions of martensite and ferrite were determined. The following non-linear relation between the tensile strength and the volume fraction of martensite $ƒ_{m}$ was derived. $σ = σ_{F} + (σ_{M}^{0} − σ_{F}) ƒ_{M} + K_{M} (gC_{0} ƒ_{M})^{12}$

The data obtained with the two experimental steels and those measured by N. C. Goel were statistically analysed. Values obtained for various parameters were found to be reasonable. This non-linear relationship described the experimental data more satisfactorily than the linear ones.

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马氏体体积分数对双相钢抗拉强度的影响

采用Fe-1.5wt.%Mn-0.1wt均匀化制备双相钢。%C和% fe -1.5 wt， %Mn-0.2wt。%C钢在720、740、760和780℃的临界间退火。测定了它们的抗拉强度和马氏体和铁素体的体积分数。推导出拉伸强度与马氏体体积分数ƒm之间的非线性关系。σ = σ f + (σ m0−σ f) ƒM + KM(gC0ƒM)12对两种试验钢的实测数据和N. C. Goel的实测数据进行了统计分析。各参数所得值都是合理的。这种非线性关系比线性关系更能令人满意地描述实验数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Materials Science and Engineering

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