Isothermal aging behaviours of a CuZnAl shape memory alloy have been investigated by means of *** length of the specimens during isothermal aging from 190 to 280℃ increases with the aging time at each *** isothermal ...
详细信息
Isothermal aging behaviours of a CuZnAl shape memory alloy have been investigated by means of *** length of the specimens during isothermal aging from 190 to 280℃ increases with the aging time at each *** isothermal aging kinetics fits in Avrami equation and the time exponent n decreases with the increase in aging *** apparent activation energy for the isothermal aging process was measured to be 109.0kJ/mol,which is about equal to that of a relaxation internal friction peak at about 200℃ (f≈1 Hz) in the alloy.
The bainite structure in a Cu-Zn-A1 alloy related to the reverse shape memory effect has been observed by means of *** reverse memory effect may be improved by up to one order of magnitude under applied constraint ***...
详细信息
The bainite structure in a Cu-Zn-A1 alloy related to the reverse shape memory effect has been observed by means of *** reverse memory effect may be improved by up to one order of magnitude under applied constraint *** widespread propagation of bainite was confirmed to be the diffusion controlled shear process by the parabolic configuration of side interface of bainite plate and the twisting of intersected bainite plates.
TTT diagrams and kinetics curves of bainite formation through up quenching from martensitic slate and of dilatometry and cooling from high temperature parent phase in Cu-Zn-Al alloys are established by ments of dilato...
详细信息
TTT diagrams and kinetics curves of bainite formation through up quenching from martensitic slate and of dilatometry and cooling from high temperature parent phase in Cu-Zn-Al alloys are established by ments of dilatometry and metallographic *** results show that the kinetics characteristics of bainite formation obey the Austin-Rickett Equation with n=2.25 for up-quenched specimens and n=1.80 for specimens cooled from high temperature,and the activation energy of bainite formation is about.110 kJ/mol,corresponding to that ofthe diffusion of solute atoms.
暂无评论