TY - JOUR A2 - Voïtchovsky，Kislon AU - 黄，金AU - 徐国华盟 - 秦，雍AU - 郑磊PY - 2020 DA - 2020年4月24日TI - 庆龙在断口形貌和组织演变的关系Term Aging of EK61 Superalloy SP - 1087024 VL - 2020 AB - Microstructural evolutions of EK61 superalloy during long-term aging until 1000 h at 700°C and 750°C, respectively, are studied by combination of Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM). Impact fracture morphologies after aging for different time are observed by the SEM. The microstructure is found to be relatively stable during aging at 700°C, and the fracture morphologies are characterized by transgranular fracture. At 750°C, the coarsening of γ “ 相位超前凹痕的数量的减少，碳化物的在晶界导致晶间断裂的chainization，和的网 η晶粒导致的层状裂解步骤在地层内相。显而易见的是，析出相的不稳定影响断口形貌显著。断裂形态和微结构之间的关系促进EK61超合金的服务可靠性的评估。SN - 0161-0457 UR - https://doi.org/10.1155/2020/1087024 DO - 10.1155 /一百○八万七千○二十四分之二千○二十〇JF - 扫描PB - Hindawi出版KW - ER -