A secondary twinning orientation relationship between A and B martensite variants in a CuZnAl shape memory alloy was confirmed under TEM observation.The twin plane, (50),is a linear combination of (8)and(1 0 10)planes...A secondary twinning orientation relationship between A and B martensite variants in a CuZnAl shape memory alloy was confirmed under TEM observation.The twin plane, (50),is a linear combination of (8)and(1 0 10)planes,which are twin planes of A:C and A:D type pair respectively.展开更多
An investigation of the influence of deformation on shape recovery has been put forward in Cu-Zn-Al shape memory alloys.Starting at a model of the re-orientation of martensitic va- riants,the principle and essentialit...An investigation of the influence of deformation on shape recovery has been put forward in Cu-Zn-Al shape memory alloys.Starting at a model of the re-orientation of martensitic va- riants,the principle and essentiality of the influence of the amount of pre-deformation ε on shape recovery rate η is elucidated.展开更多
The crossed micro-bands in the martensite variant pairs of a thermomechanically trained Cu25.66Zn-4.02Al (wt-%) alloy have been studied. It was found that the micro-bands pass through the interface from one martensite...The crossed micro-bands in the martensite variant pairs of a thermomechanically trained Cu25.66Zn-4.02Al (wt-%) alloy have been studied. It was found that the micro-bands pass through the interface from one martensite variant to another and their orientation inside different variants is distinct, which would remain in the parent phase after the reverse transformation and play an important role in the formation of preferential martensite. In fact, the crossed micro-bands are micro-twins for accommodating the stress fields generated during thermomechanically training展开更多
文摘A secondary twinning orientation relationship between A and B martensite variants in a CuZnAl shape memory alloy was confirmed under TEM observation.The twin plane, (50),is a linear combination of (8)and(1 0 10)planes,which are twin planes of A:C and A:D type pair respectively.
文摘An investigation of the influence of deformation on shape recovery has been put forward in Cu-Zn-Al shape memory alloys.Starting at a model of the re-orientation of martensitic va- riants,the principle and essentiality of the influence of the amount of pre-deformation ε on shape recovery rate η is elucidated.
文摘The crossed micro-bands in the martensite variant pairs of a thermomechanically trained Cu25.66Zn-4.02Al (wt-%) alloy have been studied. It was found that the micro-bands pass through the interface from one martensite variant to another and their orientation inside different variants is distinct, which would remain in the parent phase after the reverse transformation and play an important role in the formation of preferential martensite. In fact, the crossed micro-bands are micro-twins for accommodating the stress fields generated during thermomechanically training
