INTERMEDIATE TEMPERATURE CREEP BEHAVIOUR OF A DS CASTING Ni_3Al BASE ALLOY IC6
XIAO Chengbo; HAN Yafang; YIN Keqin; YU Qian; TAN Yongning; ZHAO Xihong (Beijing institute of Aeronautical Materials; Beijing 100095)(Manuscript received 1995-04-27)
Cite this article:
XIAO Chengbo; HAN Yafang; YIN Keqin; YU Qian; TAN Yongning; ZHAO Xihong (Beijing institute of Aeronautical Materials; Beijing 100095)(Manuscript received 1995-04-27). INTERMEDIATE TEMPERATURE CREEP BEHAVIOUR OF A DS CASTING Ni_3Al BASE ALLOY IC6. Acta Metall Sin, 1996, 32(2): 175-179.
Abstract The creep curves of alloy IC6 in the temperature range of 993-1073 K and the stress range of 774-874 MPa were determined. The microstructures of the alloy during different creep stages at 1033 K, 824 MPa have been analyzed by TEM.The results show that the stacking faults on different planes shear γ' phase and interact on each other to form Lomer-Cottrell dislocation which controls the creep rate.(Correspondent: XIAO Chengbo, Beijing institute of Aeronautical Materials, Beijing 100095)
