Effect of Solution Annealing and Low Temperature Ageing on the Microstructures and Superelastic Behaviour of Ti-50.7at.%Ni Alloy
In this study a plate form of Ti-50.7at.%Ni was subjected to solution annealing at 800℃ and 900℃ for one hour followed by ageing at 300℃ and 400℃ for 4 hours respectively in order to investigate the effect of solution annealing and low temperature ageing on the microstructures and superelastic behaviour.It was found that the formation of Ti3Nh precipitates on the samples aged at 300℃ and 400℃ influences superelasticity differently.Increasing the testing temperature up to 38℃ generally increases the superelasticity of samples for all heat treatment conditions compared to those tested at 22℃, however the sample solution annealed at 900℃ give better superelasticity at 22℃ due to excessive plastic deformation at higher temperature.
solution annealed ageing treatment superelasticity
E.Hamzah K.Hastuti J.Hashim C.E.Chuah M.A.Khattak
Faculty of Mechanical Engineering,Universiti Teknologi Malaysia,81310 Skudai,Johor,Malaysia
国际会议
香港
英文
72-80
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）