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分析开孔AISI 304薄钢板大面积受冲击荷载后的性能。由于机械加载,钢板内部组织奥氏体转变为马氏体,从而使钢板的强度和延性提高。这使得许多工程中选用AISI 304钢,尤其是那些受冲击荷载建筑结构构件,这是因为AISI 304钢能吸收冲击产生的能量。但是,钢板的马氏体转变仅发生在特定的初始温度和变形率下。为了研究AISI 304钢材受冲击后的性能,在常温下同时进行冲击速度在2.5m/s和85m/s之间的落锤和喷气式加热试验。将试验结果与ES钢和TRIP 1000钢的分析结果进行比较,结果表明:高强冲击荷载作用下AISI 304钢的性能相对更好,因为此时AISI 304钢板发生马氏体转变。
Analysis of perforated AISI 304 sheet steel after impact load performance. Due to mechanical loading, the austenite inside the steel plate is transformed into martensite, thereby increasing the strength and ductility of the steel plate. This has led to the selection of AISI 304 steels in many projects, especially those subject to impact loading, because AISI 304 steels absorb the energy of the impact. However, the martensite transformation of the steel plate occurs only at a specific initial temperature and deformation rate. In order to study the after-impact properties of AISI 304 steel, drop-weight and jet heating tests with impact velocities between 2.5 m / s and 85 m / s were conducted simultaneously at ambient temperature. The results of the tests are compared with those of the ES steel and the TRIP 1000 steel. The results show that the AISI 304 steel is relatively better under high impact load because the martensite transformation occurs on the AISI 304 steel plate.