Microstructure evolution and activation energy during superplastic deformation of FeAl based intermetallics
Microstructure evolution and activation energy during superplastic deformation of FeAl based intermetallics
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FeAl基金属间化合物超塑性变形过程中的微观结构演化和活化能
DOI：
10.1016/s1359-6462(97)00021-3
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发表时间：
1997
影响因子：
6
通讯作者：
D. Lin
中科院分区：
文献类型：
--
作者：
Dingqiang Li;D. Lin
At the temperature range from 875 C to 1,000 C under an initial strain rate range of 10{sup {minus}4}s{sup {minus}1} to 10{sup {minus}1}s{sup {minus}1}, the flow activation energy of FeAl based alloys were measured to be 370kJ {center_dot} mol{sup {minus}1} for Fe-36.5A, 290kJ {center_dot} mol{sup {minus}1} for Fe-36.5Al-1Ti and 260kJ {center_dot} mol{sup {minus}1} for Fe-36.5Al-2Ti alloy. During the superplastic deformation, the new small grains were separated from the original larger deformed grains and the average grain size became much finer from above 500{micro}m before deformation to 50--85{micro}m after deformation to fracture. It is confirmed that a continuous recrystallization process took place and superplasticity may result in this process.
At the temperature range from 875 C to 1,000 C under an initial strain rate range of 10{sup {minus}4}s{sup {minus}1} to 10{sup {minus}1}s{sup {minus}1}, the flow activation energy of FeAl based alloys were measured to be 370kJ {center_dot} mol{sup {minus}1} for Fe-36.5A, 290kJ {center_dot} mol{sup {minus}1} for Fe-36.5Al-1Ti and 260kJ {center_dot} mol{sup {minus}1} for Fe-36.5Al-2Ti alloy. During the superplastic deformation, the new small grains were separated from the original larger deformed grains and the average grain size became much finer from above 500{micro}m before deformation to 50--85{micro}m after deformation to fracture. It is confirmed that a continuous recrystallization process took place and superplasticity may result in this process.