School of Materials Science and Engineering;
Taiyuan University of Technology;
Taiyuan 030024;
China;
Key Lab of Industrial Fluid Energy Conservation and Pollution Control;
Ministry of Education;
Qingdao University of Technology;
Qingdao 266520;
China;
Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province;
Quzhou University;
Quzhou 324000;
China;
titanium aluminides; microstructure; cellular reaction; orientation relationship;