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2. 2) AIST, Kyushu University, ENAA and JPEC, “Kasumigaseki suiso station tikuatsuki chousa houkousho”, (2008).
3. 3) AIST, Kyushu University and NEDO, “Suiso yusouyou 20MPa oogata choujaku tikuatsuki (shouwa 50nenn seizou) chousa houkousho”, (2009).
4. 4) J. M. Barsom and S. T. Rolfe, “Impact Testing of Metals”, ASTM STP 466, pp.281-302 (1970).
5. Atomic force microscopy of induction- and furnace-heating-tempered prestressed steels with different delayed fracture properties