Abstract
This paper describes effects of temperature and applied strain on thermomechanical properties of Ni-free Ti-Mo-Sn alloys. The materials used are Ti-6Mo-4Sn, Ti-5Mo-5Sn, Ti-5Mo-4.6Sn and Ti-4.4Mo-5.6Sn (mol%). Loading-unloading tensile tests were carried out under the applied strain of 3% at temperatures between 183K and 323K. Additionally, loading-unloading tensile tests were carried out under the applied strains ranging from 1% to 6% at 183K. Young's modulus decreases with increasing temperature. Ti-5Mo-4.6Sn shows the smallest young's modulus at temperature above approximately 215K. There is a decrease in the critical stress for inducing martensites with increasing temperature. The largest critical stress for inducing martensites is found in Ti-6Mo-4Sn. Also, the critical stress for inducing martensites increases with increasing Mo content, in contrast, decreases with increasing Sn content. There is a decrease in the superelastic recovery strain with increasing temperature. Ti-5Mo-5Sn showed the largest superelastic recovery strain of nearly 2% under the applied strain of 4% at 183K.
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