Acta Metall Sin  1998, Vol. 34 Issue (11): 1153-1157    DOI:

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EFFECT OF YTTRIUM AND SILICON ON MICROSTRUCTURE AND PROPERTIES OF Ni_3Al BASE ALLOY IC6

HAN Yafang;XIAO Chengbo (Beijing institute of Aeronautical Materials; Beliing 100095)

HAN Yafang;XIAO Chengbo (Beijing institute of Aeronautical Materials; Beliing 100095). EFFECT OF YTTRIUM AND SILICON ON MICROSTRUCTURE AND PROPERTIES OF Ni_3Al BASE ALLOY IC6. Acta Metall Sin, 1998, 34(11): 1153-1157.

Abstract References Related Articles Recommended Metrics Download:  PDF(1305KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The effect of different amounts of yttrium and silicon on the microstructure of directionally solidified Ni3Al base alloy IC6 was studied with electron probe microstructural analysis(EPMA). The oxidation resistance at 1100℃, stress rupture property under 1100℃ /80MPa, thermal fatigue property at 1100℃ and tensile properties at different temperatures were tested, the results show that the high temperature oxidation resistance, stress rupture property and thermal fatigue property of alloy IC6 are increased by adding proper amounts of yttrium. Silicon is beneficial to the high temperature oxidation resistance but harmful to the stress rupture property and thermal fatigue property. The addition of yttrium and silicon has no obvious influence on the tensile properties. Key words:  Ni_3Al      yttrium      silicon      microstructure      mechanical property      Received:  18 November 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I11/1153 1Han Y F,Xing Z P,Chaturvedi M C.In:Nathal M V et al eds,Structural Intermetallics,1997:713 2 Pfeil L B. U.K.Patent No.459848,1937 3Kuenzly J D,Douglass D L.Oxid Met,1974;8:139 4 Guo J T; Sun C, Li H, Lai W H, Tan M H,Wang S H.In:Guan H R et al eds,Proc Inter Symposiumon High Temperature Corrosion and Protection.Liaoning Science and Technology Press,1991;45 5王淑荷,郭建亭,李辉,孙超,谭明晖,赖万慧金属学报,1991;27: A433(Wang S H, Guo J T, Li H, Sun C, Tan M H, Lai W H Acta Metall Sin, 1991; 27: A433) 6 Miner R V, Lowell C E. NASA TN D— 7989; 1975 7 Santoro G J et al. NASA TN D- 6414, 1971 8 Lowell C E, Santoro G J. NASA TN D 6838; 19729 Lowed C E, Miner R V. 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