金属学报  1986, Vol. 22 Issue (6): 5-12

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Co对Refractoloy26合金组织和性能的影响

陈国良;庄林忠;许嘉龙

北京钢铁学院;北京钢铁学院;上海钢铁研究所

EFFECTS OF Co ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Fe-Cr-Ni-Co-BASE SUPERALLOY REFRACTOLOY 26

by CHEN Guoliang; ZHUANG Linzhong (Beijing University of Iron and Steel Technology); XU Jialong (Shanghai Iron and Steel Research Institute)

陈国良;庄林忠;许嘉龙. Co对Refractoloy26合金组织和性能的影响[J]. 金属学报, 1986, 22(6): 5-12.
, , . EFFECTS OF Co ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Fe-Cr-Ni-Co-BASE SUPERALLOY REFRACTOLOY 26[J]. Acta Metall Sin, 1986, 22(6): 5-12.

摘要 参考文献 相关文章 Metrics 全文: PDF(1613 KB)   摘要: 本文研究了Co对Fe-Cr-Ni-Co基Refractoloy26高温合金组织结构和力学性能的影响.实验结果表明,Co对合金的显微组织及力学行为均有影响,而对合金的高温蠕变抗力的影响尤为显著.Co使合金基体堆垛层错能降低是引起合金蠕变性能显著提高的主要原因. Abstract：An investigation deals with the effects of Co on the microstructure and mechanical properties of Refractoloy 26, an Fe-Cr-Ni-Co-base precipitation hardening superalloy. The experimental results show that as Co is decreased in Refractoloy 26 alloys, the weight fraction of γ′-phase as well as the average diameter of γ′ particles increases, while the γ-γ′ lattice mismatch decreases. Lowering the Co content destabilizes MC carbide in the alloy so that more grain boundary M_23C_6 and M_6 C carbides form during aging treatment, therefore, the total amount of carbides increases. The M_23C_6 carbide disappears but μ-phase forms in the alloys with 14 and 20% Co. The Co content affects both of the amount and morphologies of twin boundaries in alloys. Lowering Co content has a little influence on the tensile properties, but a great influence on the creep resistance at 565℃. In comparison with the creep results of solid solution alloys with the same composition of matrix of Refractoloy 26 alloys, the creep properties for both solid solution alloys and Refractoloy 26 alloys with different Co content depend directly on the values of stacking fault energy in matrices. It seems that a satisfying superalloy could be obtained with low Co content for which the mechanical properties are high enough for practical use and the microstructure stability is even better than that of original Refractoloy 26 alloys. 收稿日期: 1986-06-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 陈国良 庄林忠 许嘉龙 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I6/5 1 Tien, J.K; Howson, T.E.; Chen, G.L.; Xie, X.S., J. Met., 32(1980) , №10, 12． 2 Tien, J. K.; Jarrett R.N., High Temperature Alloys for Gas Turbines, Eds. Brunetaud, R., et al., Reidel, Dordrecht, Netherlands, 1982, P. 423． 3 Maurer, G.E.; Jackman, L.A.; Domingue, J. A., Superalloys 1980, Proc. 4th Int. Conf. on Superalloys, ASM, Eds. Tien, J.K., et al., 1980, P. 43． 4 Jarrett, R.N.; Tien, J. K., Metall. Trans., 13A(1982) , 1021． 5 Nathal, M.V.; Maier, R.D.; Ebert, L.J., Metall. Trans., 13A(1982) , 1767． 6 Nathal, M.V.; Maier, R.D.; Ebert, L.J., Metall. Trans., 13A(1982) , 1775． 7 Heslop, J., Cobalt, 24(1964) , 128． 8 Betteridge, W.; Heslop, J., The Nimonic Alloys, 2ed., Edward Arnold, London, 1974． P. 46． 9 Sims, C.T., The Superalloys, Ed. Hagel, W.C., Wiley, New York, 1972． 10 Woodyatt, L.R.; Sims, C.T.; Beattie, J.H., Jr., Trans, Metall. Soc. AIME, 236(1966) , 519． 11 叶锐曾等,GH220合金的相变规律,北京钢铁学院,未公开发表资料、1980． 12 庄林忠,北京钢铁学院硕士学位论文,1984． 13 Murr, L.E., Scr. Metall., 6(1972) , 203． 14 Murr, L.E., Acta Metall., 21(1973) , 791． 15 Nielsen, J.P., Acta Metall., 15(1967) , 1083． 16 Murr, L.E., J. Appl. Phys., 39(1968) , 5557． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed