Influence of Aging Temperature on the Microstructure and Stress Rupture Property of DZ951 Alloy

Abstract:

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Effect of different aging temperatures on microstructure and stress rupture properties of DZ951 alloy were investigated in this paper. The results show that the shape of carbide changed from script-like in as-cast alloy to block during different aging treatments. MC carbide degrades into M23C6 at the aging temperature of 970°C, which made alloy have a better combination of strength and ductility than that at other aging temperatures. The size of γ′ phase increases and the shape of γ′ phase changed from sphere (870°C) to quasi-cuboid (920°C) and cuboid (970°C) with the increasing aging temperature. The stress rupture life of DZ951 alloy at 1100°C/60MPa improves with the increased of aging temperature. The fractographs at different conditions showed a ductile fracture mode.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1241-1244

DOI:

10.4028/www.scientific.net/MSF.546-549.1241

Citation:

P.C. Xia et al., "Influence of Aging Temperature on the Microstructure and Stress Rupture Property of DZ951 Alloy", Materials Science Forum, Vols. 546-549, pp. 1241-1244, 2007

Online since:

May 2007

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$35.00

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