冷却速率导致的薄壁效应对K465合金显微组织和持久性能的影响
郭小童, 郑为为, 李龙飞, 冯强

Cooling Rate Driven Thin-Wall Effects on the Microstructures and Stress Rupture Properties of K465 Superalloy
GUO Xiaotong, ZHENG Weiwei, LI Longfei, FENG Qiang
表2 K465合金管材经标准热处理和900 ℃、1000 h及1000 ℃、1000 h热暴露后,通过物理化学相分析方法测量得到的碳化物化学成分 (atomic fraction / %)
Table 2 Chemical compositions of carbides in the K465 alloy tube after the standard heat treatment and after thermal exposure at 900 and 1000 ℃ for 1000 h by using physicochemical phase analysis
Exposure conditionCarbideWNiCrCoMoTiNbC*
As-receivedMC9.6201.1802.4525.1411.6150.00
M6C24.9215.4121.1310.839.401.802.2214.29

900 ℃,1000 h

MC8.2201.1302.3525.4412.8750.00
M6C24.2211.9522.4814.327.212.752.7914.29
M23C65.003.5266.241.742.810020.69

1000 ℃, 1000 h

MC6.9500.9602.2725.7414.0850.00
M6C25.1614.6121.1311.789.021.632.3814.29
M23C66.234.0764.172.012.830020.69