Acta Metall Sin  1998, Vol. 34 Issue (4): 362-366    DOI:

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EFFECT OF Ni_xAl_yTi_z REFINER ON GRAIN STRUCTURES OF CAST SUPERALLOY K4169

ZHENG Jianbang; DING Hao; GUO Yiping; LIU Lin (Department of Applied Physics; Northwestern Polytechnical University; Xi'an 710072)LIU Wei; LI Xingjian (Liming Engine Manufacturing Company; Shenyang 110043)

ZHENG Jianbang; DING Hao; GUO Yiping; LIU Lin (Department of Applied Physics; Northwestern Polytechnical University; Xi'an 710072)LIU Wei; LI Xingjian (Liming Engine Manufacturing Company; Shenyang 110043). EFFECT OF Ni_xAl_yTi_z REFINER ON GRAIN STRUCTURES OF CAST SUPERALLOY K4169. Acta Metall Sin, 1998, 34(4): 362-366.

Abstract References Related Articles Recommended Metrics Download:  PDF(2758KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Grain size and dendrite morphologies of Fe-Ni based superalloy K4169 were investigated with the melt addition of NixAlyTiz refiner. It is found that the grain size of ingotscan be refined obviously to 0.1-0.2mm, close to the order of ASTM 1-3, by lowering the melting homogeneous treatment temperature during the melting and casting process. In addition, the microstructure of grains can be transferred from dendritic to cellular due to the addition ofrefiner at the same cooling condition. The addition of NixAlyTiz refiner has the advantages of little influence on the freezing characters, alloy composition as well as phase constitution. Key words:  Fe-Ni superalloy      grain refinement      nucleant      dendrite morphology      Received:  18 April 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/I4/362 1 Woulds M, Benson H. In: Gell M, Kortovich C S, Bricknell R H, Kent W B, Radavich J F eds., Superalloys,Champion: The Metallurgical Society of AIME, 1984: 3 2 Ewing B A, Green K A. In: Gell M, Kortovich C S, Bricknell R H, Kent W B, Radavich J F eds., Superalloys,Champion: The Metallurgical Society of AIME, 1984: 33 3 Mclean M. Mater Sci Technol, 1988; 4: 205 4 Prichard P D, Dalal R P. In: Antolovich S D, Stusrud R W, Mackay R A, Anton D L, Khan T, Kissinger R D,Klarstrom D L eds., Superalloys. Champion: The Metallurgical Society of AIME, 1992: 205 5 Nazmy M, Weiss B, Sticbler R. 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