王志民,刘光明,吴世强,杨首恩,田继红,李健

• 1:南昌航空大学材料科学与工程学院
• 2:东方锅炉股份有限公司材料研究所

摘要(Abstract)：

将S30432钢喷丸样品进行不同温度热处理,研究样品620℃下在90%H_2O+10%Ar气氛中的氧化行为。采用光学显微镜(OM)观察喷丸形变层组织形貌;通过测量不同时间氧化膜厚度,获得氧化动力学曲线;利用X射线衍射仪(XRD)、扫描电镜(SEM)及能谱仪(EDS)等对氧化产物成分、形貌及结构进行分析。结果表明:热处理过程中S30432钢喷丸样品形变层组织形貌无明显变化;氧化过程中,样品喷丸形变层内晶粒发生再结晶长大;氧化2000 h后,样品喷丸形变层内晶粒尺寸及碎化晶层厚度基本相同。不同温度热处理的S30432钢喷丸样品在高温水蒸汽中均生成由Cr_2O_3、(Fe,Cr)_2O_3、FeCr_2O_4以及少量Fe_3O_4和Fe_2O_3组成的富Cr氧化物薄膜。730～800℃热处理对S30432喷丸不锈钢抗高温水蒸汽氧化性能无明显影响。

关键词(KeyWords)： S30432不锈钢;喷丸;热处理;高温水蒸汽;氧化

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王志民,刘光明,吴世强,杨首恩,田继红,李健

DOI: 10.13289/j.issn.1009-6264.2018-0266

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