In this study, the effect of various factors on the hole expansion ratio and hence on the edge formability of two hot rolled multiphase steels, one with a ferrite–martensite microstructure and the other with a ferrite-bainite microstructure, was investigated through systematic microstructural and mechanical characterization. The study revealed that the microstructure of the steels, which determines their strain hardening capacity and fracture resistance, is the principal factor controlling edge formability. The influence of other factors such as tensile strength, ductility, anisotropy, and thickness, though present, are secondary. A critical evaluation of the available empirical models for hole expansion ratio prediction is also presented.
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机译:基于熵权理论的模糊综合评判法在棉花耐盐性评价中的应用Application of Fuzzy Comprehensive Evaluation Method Based on Entropy Weight Theory in Evaluation of Salt Tolerance of Cotton
机译:国家集中采购试点政策对制药企业和制药产业的影响评估 =Evaluation of the Impact of National Centralized Procurement Pilot Policies on Pharmaceutical Companies and the Pharmaceutical Industry
机译:Evaluation of the Amounts of Sennosides A and B in Rhubarb-containing Kampo Medicines to Create a Ranking of Kampo Medicines for Appropriate Selection of Laxatives