27Cr-1.7Mn-9Ni-1.5Mo-0.3Nb铸造双相不锈钢高温氧化行为研究  

Investigation on the Oxidation Behavior of Duplex Stainless Steel 27Cr-1.7Mn-9Ni-1.5Mo-0.3Nb at High Temperature

作　　者：安立聪 曹静[1] 杨弋涛[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《铸造》2016年第11期1102-1105,共4页Foundry

摘　　要：通过Factsage软件和高温氧化试验（900~1 100℃,保温5~240 min）研究了27Cr-1.7Mn-9Ni-1.5Mo-0.3Nb铸造双相不锈钢的氧化模拟过程和氧化实际过程。利用X射线衍射仪（XRD）等手段,分析了不同保温温度和时间下氧化膜的组成及物相结构的变化情况。结果表明：氧化温度越高,双相不锈钢的氧化速率越快;氧化膜由Cr、Mn、O复合氧化物组成;通过Factsage计算得出的主要氧化产物随温度的变化情况与实际试验条件下的变化情况趋势一致,温度越高两者相差越小。Simulated and actual process of initial oxidation behavior of duplex stainless steel were investigated by Factsage software and high-temperature oxidation experiment （holding 5 -240 min at 900-1 100 ℃ ）. Composition and structure of oxidation film were studied by XRD. The results show that the higher temperature is, the faster oxidation reaction could be; oxidation scales are mainly composed by oxide ofCr, Mn and O. The trend of the temperature of main oxidation products calculated by Factsage is consistent with the one in actual experiment conditions. The higher the temperature, the less the difference.

关 键 词：Factsage 氧化动力学 双相 

分 类 号：TG142.71[一般工业技术—材料科学与工程]