2DNV OS C401, Fabrication and testing of offshore structures[ S]. 2004.
3BS7448: Part 2: 1997, Method for determination of KIC, critical CTOD and critical J values of welds in metallic materials [ S ]. 1997.
4Ricks R A, Howell P R, Barritte G S. The nature of acicular fer- rite in HSLA steel weld metals[J]. Journal of Materials Science, 1982, 17(3) : 732 -740.