Study on the Mechanical Performance of a Ni-Based Superalloy with Trace Rare Earth Element La Additions

Xiu Song; Lei Wang; Yang Liu; Hui Ping Ma

doi:10.4028/www.scientific.net/AMR.509.177

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 509Study on the Mechanical Performance of a Ni-Based...

Study on the Mechanical Performance of a Ni-Based Superalloy with Trace Rare Earth Element La Additions

Abstract:

The microstructures and mechanical properties of the Ni-22Cr-14W-2Mo superalloys with various La contents have been investigated. The results indicate that the grain diameters of the alloys with different La additions are similar to that of the alloy without La. It has also been found that the Vickers Hardness of the alloys increases with the increasing of the La content form 0.000% to 0.087%. The tensile properties of the alloys can be improved by La additions, whereas the σ_0.2 proof strength and the elongations of the alloys first increase and then decrease with the increasing of the La content form 0.000% to 0.087%. The alloy with 0.026% La shows the best tensile properties. This result ascribes to the different types of the La-riched phases and the different sizes of them. The La-Ni intermetallic phases with large size precipitating in the alloys have deleterious effects on the improvement of the mechanical properties, if the La content is too high.

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Periodical:

Advanced Materials Research (Volume 509)

Pages:

177-181

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.509.177

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Online since:

April 2012

Authors:

Xiu Song, Lei Wang, Yang Liu, Hui Ping Ma

Keywords:

La-Riched Phases, Mechanical Property, Ni Based Superalloy, Rare Earth La

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References

[1] X.B. Liu, G. Yu, J. Guo, Y.J. Gu, M. Pang, G.Y. Zheng, H.H. Wang, Research on laser welding of cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft, J. Alloys Compd. 453 (2008) 371-378.

DOI: 10.1016/j.jallcom.2006.11.152

Google Scholar

[2] G.H. Bai, J.S. Li, R. Hu, Z.W. Tang, X.Y. Xue, H.Z. Fu, Effect of temperature on tensile behavior of Ni–Cr–W based superalloy, Mater. Sci. Eng., A 52 (2011) 1974-1978.

DOI: 10.1016/j.msea.2010.11.053

Google Scholar

[3] Q.Y. Han. Physicochemical characteristics of rare earth elements in ironmaking and steelmaking, J. Less Common Met. 126 (1986) 73-82.

DOI: 10.1016/0022-5088(86)90250-x

Google Scholar

[4] P.J. Zhou, J.J. Yu, X.F. Sun, H.R. Guan, Z.Q. Hu, Role of yttrium in the microstructure and mechanical properties of a boron-modified nickel-based superalloy, Scripta Mater. 57 (2007) 643-646.

DOI: 10.1016/j.scriptamat.2007.06.003

Google Scholar

[5] J.H. Zhang, P. Yu, K. Liu, D.Q. Fang, D.X. Tang, J. Meng, Effect of substituting cerium-rich mischmetal with lanthanum on microstructure and mechanical properties of die-cast Mg-Al-RE alloy[J], Mater. Des. 30 (2009) 2372-2378.

DOI: 10.1016/j.matdes.2008.10.028

Google Scholar

[6] H. Inui, T. Yamamoto, D. Zhang, M. Yamaguchi, Microstructures and defect structures in intermetallic compounds in the La-Ni alloy system, J. Alloys Compd. 293-295(1999) 140-145.

DOI: 10.1016/s0925-8388(99)00314-x

Google Scholar

[7] X. Song, L. Wang, Y. Liu, H.P. Ma, Precipitation characteristics and La effects on precipitates of a new 22Cr-14W-2Mo superalloy, Rare Met. 29 (2010) 132-137.

DOI: 10.1007/s12598-010-0023-5

Google Scholar

[8] D.Y. Zhang, J.K. Tang, K.A. Gschneidner. A redetermination of the La-Ni phase diagram from LaNi to LaNi5 (50-83.3 at.% Ni), J. Less Common Met. 169(1991) 45-53.

DOI: 10.1016/0022-5088(91)90234-u

Google Scholar