增/降氧过程对高温合金粉末表面特性和合金性能的影响：粉末存储到脱气处理

郑亮, 张强, 李周, 张国庆

Effects of Oxygen Increasing/Decreasing Processes on Surface Characteristics of Superalloy Powders and Properties of Their Bulk Alloy Counterparts: Powders Storage and Degassing

ZHENG Liang, ZHANG Qiang, LI Zhou, ZHANG Guoqing

图8 原始态和大气环境存储90 d后< 53 μm粒度的FGH96高温合金粉末经热等静压(HIP)固结成形后显微组织的SEM像、EBSD结果及晶粒尺寸分布

Fig.8 SEM images (a, d), EBSD images (b, e), and average grain sizes (c, f) of hot isostatic pressed (HIPed) bulk alloys consolidated from original (HIP-1, with oxygen content of about 120 × 10-6) (a-c) and stored (in the atmospheric environment for 90 d, HIP-2, with oxygen content of about 200 × 10-6) (d-f) FGH96 superalloy powders with particle size range of 0-53 μm (PPB—prior particle boundary)