铝热-离心法制备的铁镍基耐蚀合金的显微结构  

MICROSTRUCTURE OF IRON-NICKEL ALLOY PRODUCED BY CENTRIFUGAL-SHS PROCESS

作　　者：席文君[1] 周和平[2] 殷声[3] 赖和怡[3] 

机构地区：[1]清华大学材料科学与工程系北京科技大学材料科学与工程学院 [2]清华大学材料科学与工程系 [3]北京科技大学材料科学与工程学院

出　　处：《复合材料学报》2003年第4期10-13,共4页Acta Materiae Compositae Sinica

摘　　要：　研究了铝热-离心法制备的铁镍基合金内衬复合钢管的显微结构,分析了内衬层沿径向的成分分布。结果表明,铁镍合金内衬层与碳钢基体之间形成了一个宽约20μm的马氏体过渡区。内衬层合金元素的含量沿径向由内表面到外表面逐渐降低。铁镍合金铁素体区内有细小的AlNi3和AlNi析出物。The microstructure and the composition distribution of the iron-nickel alloy lined layer those chemical composition is Ni-Cr-Al-Si-Fe in a composite steel pipe produced by centrifugal-SHS process were investigated. The results show that a martensitic transition region has been found between the iron-nickel layer and the carbon steel matrix. A composition gradient of alloying elements exists in the iron-nickel alloy layer in the radial direction of the composite pipe. The alloying element contents in the lined layer are higher near the inner surface than near the outside surface. The intermetallic compounds AlNi3 and AlNi precipitate in the iron-nickel alloy.

关 键 词：复合钢管 铁镍基合金 燃烧合成 铝热-离心法 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TF124.36[金属学及工艺—金属材料]