铝对310S耐热钢高温抗氧化性能的影响研究

来源期刊：钢铁2011年第1期

论文作者：喇培清 李玉峰 刘闪光

文章页码：66 - 69

关键词：310S钢； 高温氧化性能； 氧化膜

Key words：310S steel； high temperature oxidation resistance； oxide scale

摘    要：采用增重法研究了通过WS-4非自耗真空电弧炉制备的w(Al)为2%~10%的310S耐热钢在1 200℃×30 h空气中的抗氧化性能。用扫描电镜(SEM)观察了氧化层的表面形貌,X射线衍射仪(XRD)分析了氧化膜层的相组成。研究表明:加入铝后显著提高了310S钢的高温抗氧化性能,且310S钢的高温抗氧化性能随着铝含量的增加而提高;310S钢的氧化增重与氧化时间关系呈抛物线规律,加入w(Al)为10%时,310S钢的氧化增重速率降低约1倍以上;加入铝元素后,改变了310S钢的氧化膜层的物相组成和致密度,含铝的310S钢表面形成了含有Al₂O₃相的致密氧化膜。

Abstract: 310S steels with 2%-10% aluminum were prepared by WS-4 nonconsumable arc production furnace.High temperature oxidation resistance of the 310S steels at 1 200 ℃ for 30 h was investigated by using weight gain methods.The oxidation surface morphology and the phases of the oxide scale were analyzed by using SEM and XRD.Experimental results show that existence of aluminum element in the steels can improve the high temperature oxidation resistance.The high temperature oxidation resistance is increased with Al element.The 310S steels oxidation behavior is approximately parabolic.The oxidation rate of 310S steels with 10% aluminum is decreased about 1 times than that of without aluminum.The phases in the oxide scale vary with content of aluminum.Al₂O₃ phase appeares in oxide scale its content increases with aluminum.