Paper Title:
Effect of Alloying Elements on Microstructure and Mechanical Properties of High Temperature Die Material DM02 Alloy
  Abstract

The effect of Ta, Nb, Hf and Zr on the microstructure and high temperature tensile properties of DM02 alloy, which is a novel developed Ni base superalloy for high temperature die material, had been studied in this paper. The results showed that the four alloying elements affect the composition and morphology of carbides obviously, and have almost no effect on the morphology and size of γ´ phase in DM02 alloy. 0.5-1wt% Hf make the morphology of MC carbide change from bone-like to blocky and inhibit the formation of primary M6C carbide, thus improve the ductility of DM02 alloy, while 0.1wt% Zr has no similar effect. The strengthening effect of 3wt% Ta is better than that of 1.5wt% Nb. DM02 alloy with 3wt% Ta and 0.5wt% Hf has high strength and good ductility at 1050°C.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1257-1260
DOI
10.4028/www.scientific.net/MSF.546-549.1257
Citation
J. X. Song, Q. Li, C. B. Xiao, Y. F. Han, "Effect of Alloying Elements on Microstructure and Mechanical Properties of High Temperature Die Material DM02 Alloy", Materials Science Forum, Vols. 546-549, pp. 1257-1260, 2007
Online since
May 2007
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$32.00
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