1. [1] J. H. Dautzenberg and J. H. Zaat, Wear, 23, 9-19 (1973).
2. [2] H. Sato, T. Murase, T. Fujii, S. Onaka, Y. Watanabe and M. Kato, Acta Mater., 56, 4549-4558 (2008).
3. [3] H. Sato, Y. Kubota, E. M. Fujiwara and Y. Watanabe, Mater. Sci. Forum, 654-656, 1227-1230 (2010).
4. [4] H. Sato, E. M. Fujiwara and Y. Watanabe, Materia Japan, submitted.
5. [5] Y. Todaka, M. Umemoto, Y. Watanabe, A. Yamazaki, C. Wang and K. Tsuchiya, ISIJ Int., 47, 157-162 (2007).