(北京工業(yè)大學(xué)九系，北京100022；*上海寶山鋼鐵(集團)公司冷軋廠，上海200941)
摘 要: 對離心SHS(Self-propatating High-temperature Synthesis自蔓延高溫合成)陶瓷襯管的鐵過渡層組織結(jié)構(gòu)及性能研究發(fā)現(xiàn)，鐵過渡層與陶瓷層為“拋錨”結(jié)合，過渡層與基體層為冶金結(jié)合。對鐵過渡層進行SEM、TEM及DEAX分析發(fā)現(xiàn)，F(xiàn)e層中殘存有未分離的陶瓷粒子，具有較高的位錯密度及發(fā)達的亞晶組織，且發(fā)現(xiàn)了少量的索氏體和屈氏體組織，認為這是由于鋼基體中的碳滲透到鐵層中引起的。這些都是造成鐵過渡層硬度較高甚至超過鋼基體的原因。
關(guān)鍵字: 自蔓延高溫合成 陶瓷襯管 鐵過渡層 顯微組織
（Department of Materials Science and Engineering,Beijing Polytechnic University,Bei jing 100022* Cold Rolling Mill Plant,Baoshan Iron and Steel Corp,Shanghai 200941）
Abstract:Investigation on the microstructure and properties of the ceramic-lined pipe shows that steel sub-strate joins metallurgically with Fe transition layer，which joins with ceramic layer by way of "drop anchor", so the bonding strength is high. There exist unsegregated ceramic particles,relatively high dislocation density,devel-oped subcrystal,a small amount of sorbite and troostite in the transition layer. Sorbite and troostite result from the penetration of carbon in steel substrate to Fe layer.
Key words: ceramic-lined SHS Fe transition layer microstructure
