1. College of Materials Science and Engineering, Chongqing University, Chongqing, China
2. Department of Materials Science & Engineering, University of Toronto, Toronto, Canada
3. Chongqing Academy of Metrology and Quality Inspection, Chongqing, China
4. Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing, China