1. Department of Materials Science and Engineering; Delft University of Technology; Mekelweg 2; Delft, 2628 CD; The Netherlands
2. School of Materials and Metallurgy; Northeastern University; Wen Hua Lu 3-11; Shenyang; Liaoning P. R. China
3. School of Metallurgical Engineering; Anhui University of Technology; Hu Dong Lu 59; Ma'anshan; Anhui P. R. China
4. Zr-Hf-Ti Metallurgie B.V.; Van der Heimstraat 62; Den Haag SB The Netherlands