6Fukuhisa M A, Kenji I, Hitoshi O. Effect of M - A constituent on fracture behavior of 780 and 980MPa class HSLA steel subjected to weld HAZ thermal cycle[J]. Trans. JWRI, 1994,23(2):231 -238.
7Vladimir M, Zhonglin L, Hiteshi O. Microstructural investigation on decomposition behavior of M - A constituent and recovery of ductility due to PWHT in simulated HAZ of HSLA STEEL[J]. Trans. JWRI, 1991, 20(1): 69-75.