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Ferrite area hot rolling craft parameter to ultra low-carbon steel organization performance influence
Studies the ELC steel hot rolling to use the ferrite area to replace the austenite area rolling the new craft, this experimental main research direction is aims at the craft parameter to the ELC steel in the ferrite area hot rolling performance influence. The main research parameter is anneal around the finishing temperature and presses rate. ELC steel ferrite area hot rolling, along with hot rolling presses rate increasing, the ferrite crystal grain gradually changes in a big way, the crystal grain size enhances, moreover is evener. The texture intensity gradually increases, the r value elevates. Mainly has formed {001} the component, also has few is very weak {113} the component and {114} the component, the minority situation can produce the extremely weak gamma texture. When presses rate is 70%, the intensity rank about 11 achieved high, afterwards along with presses rate the increase, the texture intensity instead drops
Along with finishing temperature reducing, the crystal grain gradually has changes the major tendency, tends to evenly, also along rolls over to pulls the long crystal grain reduction. The texture intensity gradually increases, the r value elevates. Mainly has formed {001} the component, also has few is very weak {113} the component and {114} the component, the minority situation can produce the extremely weak gamma texture. When presses rate is 70%, the intensity rank about 11 achieved high, afterwards along with presses rate the increase, the texture intensity instead drops
Because has not used the Run soul, this experimental main texture for {001}, the lubrication may reduce the test specimen and the roller faying surface friction, causes in the test specimen thickness direction to distort evenly, the surface layer and the middle partial textures are consistent, the crystal grain main orientation is ND ‖{111}. If has not lubricated, as a result of the shearing stress function, the surface layer partial textures mainly is {001}, thus harms the entire test specimen the depth to flush the performance.
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