摘要
The influence of moderate temperature treatment after quenching on thermal cycling behaviour and mechanical properties of the CuAlNiMnTi shape memory alloys have been investigated.It is shown that there will be α phase precipitation in the alloy when it is subjected to quenching followed by moderate temperature treatment at 600℃.The precipitation of α phase can suppress NiAl-base phase precipitation during subsequent thermal cycling,therefore the stabilization of transformation temperature during thermal cycling can be achieved.The suitable amount of α phase precipitation contributes to the improvement of mechanical properties of the alloy by changing the fracture morphology.
The influence of moderate temperature treatment after quenching on thermal cycling behaviour and mechanical properties of the CuAlNiMnTi shape memory alloys have been investigated.It is shown that there will be α phase precipitation in the alloy when it is subjected to quenching followed by moderate temperature treatment at 600℃.The precipitation of α phase can suppress NiAl-base phase precipitation during subsequent thermal cycling,therefore the stabilization of transformation temperature during thermal cycling can be achieved.The suitable amount of α phase precipitation contributes to the improvement of mechanical properties of the alloy by changing the fracture morphology.
