Thermal processing Characteristics and Simulation Analysis of BFe10-1-1 Alloy
Received:September 18, 2017  Revised:September 18, 2017
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KeyWord:BFe10-1-1 alloy; step specimen; hot compression; simulation; dynamic recrystallization
     
AuthorInstitution
Qi Liang 江西理工大学 材料科学与工程学院
Hao Qiqi 江西理工大学 材料科学与工程学院
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Abstract:
      The microstructures of BFe10-1-1 alloy with 10 ~ 50% deformation were studied by hot rolling of ladder samples. The microstructures of the alloy cylindrical specimens at a temperature of 900 ℃, a deformation of 50% and a strain rate of 1,5s-1 were investigated using the MMS-100 thermal simulator. At the same time, the true stress-strain curve is obtained. The stress and strain distribution characteristics of the alloy during the thermal deformation process are studied by means of the finite element simulation software ANSYS. The results show that the cast dendrites of BFe10-1-1 alloy grow up at high temperature, and the grain size increases with temperature. At 850 ℃, the root of the dendrites was broken and began to disperse into independent islands. In this experiment, the dynamic recrystallization occurs when the reduction amount reaches 30%, and the dynamic recrystallization grains are preferentially formed at the grain boundary. In the compression test, the stress distribution of the alloy is not uniform, and the strain of the heart is the largest, and the edge is the smallest.
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