β Stability and Mechanical Behavior of Metastable β Type TiNb Based Alloys

摘要：

　　Metastable β type TiNb based alloys of Ti-35Nb,Ti-35Nb-4Sn and Ti-42Nb-4Sn (wt.%) with different stability were prepared and thermo-mechanical treatment was carried out to investigate their microstructural evolution and mechanical properties.It was found that although the TiNb based alloy with lower stability performs lower strength in its solution state due to the stress induced martensitic transformation,they could be strengthened significantly by severe cold rolling followed by aging,remaining a relative low elastic modulus.X-ray diffraction,transmission electron microscopy and mechanical test were conducted to characterize the microstructural evolution and mechanical behavior of the metastable β type TiNb based alloys with different β stability.The strengthening mechanism was discussed on the basis of the cold deformation and martensitic transformation.

关键词： β Ti alloy Ti-Nb-Sn Thermo-mechanical treatment Martensitic transformation

作者: Guangyue Liao Shun Guo Zhenzhen Bao Xinqing Zhao

作者单位: School of materials science and engineering, Beihang University, Beijing, 100191, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 941-946

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）