FeMnAlC系低密度钢的耐腐蚀性能研究

Study on Corrosion Resistance of FeMnAlC Series of Low Density Steel

文章设计了一种FeMnAlC系低密度钢,该钢种轧制方向(RD)、宽度方向(TD)的抗拉强度均大于1300 MPa,且具有较高的延伸率。在保证材料稳定的高强韧性能的基础上,通过室内干湿交替加速试验,扫描电镜(SEM)、能谱(EDS)、X-射线光电子能谱(XPS)检测,研究了在模拟的高温、高湿、高盐雾的海洋大气环境中FeMnAlC系低密度钢的腐蚀行为,为新一代高强低密度钢的耐蚀性能评价提供参考。

In the article,a type of FeMnAlC series of low density steel is designed.Its tensile strengths of rolling direction(RD)and transverse direction(TD)are both greater than 1300 MPa as well as it is with higher elongation.On the basis of ensuring stable high strength and toughness of the material,the corrosion behaviors of FeMnAlC series of low density steel in the simulated naval air environment with high temperature,humidity and salt spray are studied through the indoor accelerated test with alternation of wetting and drying as well as the tests with scanning electron microscopy(SEM),energy disperse spectroscopy(EDS)and X-ray photoelectron spectroscopy(XPS)to provide the references for evaluating corrosion resistance of the new generation of high strength low density steel.