【摘要】 蠕变过程中碳化物形貌、类型、数量和分布状态的变化直接影响着材料的高温性能,因而在材料的蠕变研究中得到了广泛的重视.介绍一种在碳膜萃取复型样品上,利用H-800透射电子显微镜的双倾样品台进行大角度倾转,来观察碳化物形貌并鉴定其类型的试验方法.更多还原

【Abstract】 Since the morphology, type, quantity and distribution of carbides have direct influence on the el-evated temperature property of materials during creep, more attention are paid on them in the creep study of mate-rials. In this paper, the large-angle tilting method was used to study the morphology and type of carbides in 2. 25Cr-lMo steel after long-term creep at elevated temperature. The carbon extraction replica was observed in H-800 TEM with double tilting specimen stage. A series of SAED patterns were obtained from a carbide particle and therefore the type of carbide could be identified.更多还原