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现代化的海军舰船要求减轻自重,提高有效负荷和增强防御能力。服股中的军舰在动态负荷状态下,舰体结构必须保持结构上的完整性,包括承受敌方武器的破坏。选择舰船用钢和建造船体的焊接金属,论证了极端服役状态下的断裂韧性及裂缝允许极限,被记入军舰的断裂安全性。使用HY-型钢材符合这些要求,但是,这类钢材制造成本太高。 美国海军水面战争研究中心已着手开发符合强度和韧性要求的焊接性更优的HSLA钢,以减少军舰的制造成本。HSLA-80、HSLA-100钢是属低碳、铜增强型钢,在评价了钢的机械性能,焊接性能和结构性能
Modern naval vessels demand self-respect, increased payload and enhanced defensive capabilities. Warships in service stocks Under dynamic loading conditions, the hull structure must maintain its structural integrity, including the destruction of enemy weapons. The choice of shipbuilding steels and the weld metal for the construction of the hull demonstrate the fracture toughness and the allowable limit of fracture under extreme service conditions and the fracture safety of warships. The use of HY-type steel meets these requirements, however, and the cost of producing such steel is too high. The United States Naval Surface Warfare Research Center has embarked on the development of more weldable HSLA steels that meet strength and toughness requirements to reduce warship manufacturing costs. HSLA-80, HSLA-100 steel is a low-carbon, copper-reinforced steel, in the evaluation of the mechanical properties of steel, welding performance and structural performance