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Fabrication,Microstructure and Mechanical Properties of High PerformanceFerrite-bainiteSteels

机译:高性能铁素体-贝氏体钢的制备,显微组织和力学性能

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摘要

Low cost ferrite and bainite(FB) steels offer the prospect of high ultimate tensile strength combined with high hole expansion ratio.The enhanced strain hardening and formabilityof FB steels were primarily associated with the fine ferrite matrix,the low residual stresses and dislocation densityand compatible deformation between both phases.This overview describes the various techniques to produce FB steels,and comparestheresulting microstructure,tensile propertiesand stretchflangeabilitywith conventional HSLA and DP steels.A new generation of ultrafine ferrite and nano-scalebainiteautomotive steelsisunder development forthe futuredemands of extremely high strength and ductilitythroughthe fabricationtechnologiesinvolvingphase transformationsandplastic deformation.
机译:低成本铁素体和贝氏体(FB)钢具有高极限抗拉强度和高扩孔率的前景.FB钢的增强的应变硬化性和可成形性主要与精细的铁素体基体,低的残余应力和位错密度以及相容的变形有关本概述介绍了生产FB钢的各种技术,并将其与常规HSLA和DP钢的微观组织,拉伸性能和拉伸凸缘性进行了比较。通过涉及相变和塑性的制造技术,正在开发新一代超细铁素体和纳米级贝氏体汽车钢,以期满足对极高强度和延展性的未来需求形变。

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