摘要
采用D/MAX-2500型X射线衍射仪、OLYMPUS-BHM型金相显微镜、PHLIPS-XL30/TMP型扫描电子显微镜等试验设备,以Cr、Al和Si元素作为耐热钢的主要合金元素,与此同时添加适量的稀土元素,试制了一种具有较好高温抗氧化性能且更为经济的新型铁素体耐热合金35Cr18Al3Si2RE。研究结果表明,大量的铁素体稳定元素Cr、Al、Si的加入,使新合金形成单相铁素体组织;新合金35Cr18Al3Si2RE高温氧化膜主要由Cr2O3、Al2O3、Fe2O3、SiO2等氧化物组成,氧化膜排布十分致密且分布十分均匀;新合金35Cr18Al3Si2RE的氧化增重速率与目前常用的ZG35Cr24Ni7SiN相比有明显降低,表现出了较好的高温抗氧化性能。
By using D/MAX-2500 X-ray diffraction, OLYMPUS-BHM metallographic microscope, PHLIPS-XL30/TMP scanning electron microscope and other test equipments, with Cr, Al and Si elements as the main alloying elements of heat resistant steel, at the same time adding an appropriate amount of rare earth elements, a new ferritic heat-resistant alloy 35Cr18A13Si2RE which had good high temperature oxidation performance and economic had been trial-produced. The research results show that, a lot of ferrite stable elements Cr, Al, Si was added, so that the new alloy formed single phase ferrite; the high temperature oxidation films of the new alloy 35Crl 8A13Si2RE was mainly composed of Cr203, Al2O3, Fe2O3, SiO2 and other oxides, the oxide films were very dense and distribution were very uniform; Oxidation weight gain rate of the new alloy 35Cr18A13Si2RE which compared with the commonly used ZG35Cr24Ni7SiN had obviously decreased, the new alloy 35 Cr 18A13 S i2RE showed better high temperature oxidation resistance.
出处
《铸造》
CAS
CSCD
北大核心
2014年第8期792-794,共3页
Foundry
关键词
耐热合金
氧化膜
氧化增重速率
高温抗氧化性能
heat resistant alloy
oxide film
oxidation rate of weight gain
high temperature oxidation resistance