文献类型：期刊文献

英文题名：Size effect of plasticity of Ti2AlNb alloy: An in situ micro-pillar compression study

作者：Yu, Tianchen[2]; Wan, Shijia[2]; Yan, Yabin[1,2]

机构：[1] Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237, China; [2] Key Laboratory of Pressure Systems and Safety, The Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2025

卷号：3068

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20253519092015)

语种：英文

外文关键词：Aluminum alloys - Dislocations (crystals) - Niobium alloys - Size determination - Ternary alloys - Titanium alloys

摘要：Ti2AlNb alloys have attracted extensive research due to their critical role in the lightweight and high-performance development of aerospace engines. This study investigates in situ compression experiments on single-crystal Ti2AlNb alloy micro-pillars at the micro scale. The results reveal that at room temperature, the B2 matrix phase predominantly governs plastic slip, while the O phase impedes dislocation movement, enhancing the material's strength. Additionally, a "smaller is stronger"size effect was observed by comparing specimens of different sizes. ? Published under licence by IOP Publishing Ltd.