Fe100–x C x melts (x = 18 to 24) can be cast under B2O3 flux into solids of interconnected network morphology, with a wavelength in the submicron range. There are two major constituent subnetworks, which are a brittle Fe3C subnetwork and a ductile αFe subnetwork. The Fe100–x C x network alloys, therefore, are white cast iron of novel microstructure. Fe100–x C x specimens of x = 18 to 21 are ductile and the yield strength can be as large as ~3200 MPa. Fe100–x C x specimens of x = 22 to 24 are in the regime of a ductile-to-brittle transition. The compressive strength is high, at ~2700 MPa. Microstructural analysis indicates that the ultrafine network morphology and the ductile αFe subnetwork are responsible for the ductility exhibited in Fe100–x C x network alloys of x = 17 to 21. They are also responsible for the high compressive strength in Fe100–x C x network alloys of x = 22 to 24.
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机译：可以在B 2 O 3 下浇铸Fe 100–x C x 熔体（x = 18至24）流量进入互连的网络形态的固体中，波长在亚微米范围内。有两个主要的组成子网络，分别是脆性的Fe 3 C子网络和易延展的αFe子网络。因此，Fe 100–x C x 网络合金是具有新颖显微组织的白色铸铁。 x = 18至21的Fe 100–x C x 标本具有延性，屈服强度可高达〜3200 MPa。 x = 22至24的Fe 100–x C x 标本处于韧性到脆性转变的状态。抗压强度很高，约为2700 MPa。显微组织分析表明，x = 17至21的Fe 100–x C x 网络合金的超细网络形态和易延展的αFe子网络是造成延展性的原因。它们也是x = 22至24的Fe 100–x C x 网络合金中高抗压强度的原因。
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