The meaning of FERRITE is any of several magnetic substances that consist essentially of ferric oxide combined with the oxides of one or more other metals (such as manganese, nickel, or zinc), have high magnetic permeability and high electrical resistivi
cooling of steel from a temperature above A1 in, for example, water. In this case, diffusive precipitation of austenite to a mixture of two phases (ferrite and carbide) is suppressed. The concentration of carbon in martensite corresponds to that in austenite. The ma 正在翻译,请等待...[...
to transform isothermally at a given temperature can be conveniently represented by a diagram of the type shown in Figure 8.18, which plots the time necessary at a given temperature to transform austenite of eutectoid composition to one of the three structures: pearlite, bainite or martensite. Such...
The multiphase character of the bainitic microstructure (bainitic ferrite, retained austenite, and, in some cases, martensite), together with its unique microstructural and morphological peculiarities, is a true challenge from the characterization point of view, as well as a direct consequence of the ...
After air cooling down to RT, the already flattened ferrite grains remain to form ferrite lamellae, while the flattened austenite grains became martensite lamellae by a phase transformation. When impacted from thickness direction (ND in Fig. 3(e)), the alternately stacked ferrite/martensite can ...
Table 2 Yield strength, tensile strength, and volume fractions of quasi-polygonal ferrite (PF), acicular ferrite (AF), granular bainite (GB), bainitic ferrite (BF), and martensite-austenite constituent (MA) of API X60- to X80-grade linepipe steels. Full size table The present study provides...
The present invention relates to A high strength steel sheet having a structure which is mainly composed of MD structure (Micro Duplex structure) comprising a ferrite matrix, and as a secondary phase, martensite or martensite and retained austenite, finely dispersed in said matrix, wherein the ...
The Significance of Austenite/Ferrite/Martensite Ratio on Governing Impact Toughness of Fe-0.2C-6Mn-1.5Al Medium-Mn Transformation-Induced Plasticity Steel Studied by a Novel Heat Treatmentfracture modeimpact toughnessmedium-Mn steelmicrostructural evolutionvolume fraction of austenite...
9. It was found that the NDZ was free of the G-phase, however, the austenite/ferrite interface was highly decorated with G-phase. Due to the elastic-plastic incompatibility between the ferritic and austenitic phase, it is known that interfaces of ferrite/austenite in DSS have a significant ...
They enable to understand why ferrite or martensite is sometimes obtained in the final microstructure. From the calculations made, an original CCT (Continuous Cooling Transformations) diagram starting from the δ phase is proposed. This understanding is one more step toward the control of ...