当前位置: X-MOL 学术Mater. Sci. Eng. A › 论文详情
Specific forward/reverse latent heat and martensite fraction measurement during superelastic deformation of nanostructured NiTi wires
Materials Science and Engineering: A ( IF 4.081 ) Pub Date : 2020-01-07 , DOI: 10.1016/j.msea.2020.138928
Henrique Martinni Ramos de Oliveira; Hervé Louche; Estephanie Nobre Dantas Grassi; Denis Favier

This study analyses the thermomechanical tensile behaviour of a cold drawn Ti-50.9at.%Ni wire submitted to heat treatment at 598 K for 30 min, which is below the recrystallization temperature (623 K). Such low temperature heat treatment induces a superelastic loop without a stress plateau. However, the absence or weakness of peaks on its differential scanning calorimetry prevents the determination of specific latent heat. This is a common effect of nanostructured materials such as superelastic wires. A method using strain and temperature field measurements was developed and used to determine thermal power and thermal energy during superelastic tensile tests through a heat balance. From these results and using a thermodynamic approach, forward and reverse specific latent heat and the martensite fraction are estimated as a function of strain and stress.
更新日期:2020-01-07

 

全部期刊列表>>
化学/材料学中国作者研究精选
Springer Nature 2019高下载量文章和章节
ACS材料视界
南京大学
自然科研论文编辑服务
剑桥大学-
中国科学院大学化学科学学院
南开大学化学院周其林
课题组网站
X-MOL
北京大学分子工程苏南研究院
华东师范大学分子机器及功能材料
中山大学化学工程与技术学院
试剂库存
天合科研
down
wechat
bug