Department of Mechanical Engineering;
Tsinghua University;
Beijing 100084;
China;
School of Mechanical Engineering;
Beijing Institute of Technology;
Beijing 100081;
China;
Key Laboratory for Advanced Materials Processing Technology;
Ministry of Education;
Tsinghua University;
Beijing 100084;
China;
Ti_(2)AlNb-based alloy; In-situ additive manufacturing; Heat treatment; Microstructure evolution; Mechanical properties;