Hot Working Behavior of Casting Thermo-Span Alloy

Lian Xu Yu; Zhou Bo Zhang; Lin Jie Huang; Wei Hong Zhang; Xin Xin; Fang Liu; Feng Qi; Dan Jia; Wen Ru Sun

doi:10.4028/www.scientific.net/MSF.788.504

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Effects of Re on Microstructure of Ni₃Al-Based Single Crystal Superalloys
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Hot Working Behavior of Casting Thermo-Span Alloy
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Effects of Pouring Temperature on the Tensile Properties and Fracture Behavior of Single Crystal Superalloy DD6
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Heat Treatment Microstructures of a Directionally Solidified Nickel Base Superalloy under High Temperature Gradient
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HomeMaterials Science ForumMaterials Science Forum Vol. 788Hot Working Behavior of Casting Thermo-Span Alloy

Hot Working Behavior of Casting Thermo-Span Alloy

Abstract:

Thermo-Span alloy is an oxidation resistant, low thermal expansion superalloy with good mechanical properties at the service temperature. This paper investigated the hot working behavior of casting Thermo-Span alloy deformed at 900~1150°C, with strains of 20%, 40% and 60% at strain rates of 1 and 10 s^-1. Dynamic recrystallization (DRX) grains were formed at 1110°C with a strain of 20%, at 1050°C with a strain of 40%. Increasing the deformation rate and strain can promote the DRX. However, when the strain exceeded 60% or the deformation temperature was above 1150°C with 40% strain, the surface cracks occurred, indicating that the alloy should be deformed in one heat no larger than 60%. By forging and rolling at 1050°C, Thermo-Span alloy with good surface quality and homogeneous grains was produced, and the tensile properties were still acceptable.

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Periodical:

Materials Science Forum (Volume 788)

Pages:

504-510

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.788.504

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Online since:

April 2014

Authors:

Lian Xu Yu, Zhou Bo Zhang, Lin Jie Huang, Wei Hong Zhang, Xin Xin, Fang Liu, Feng Qi, Dan Jia, Wen Ru Sun*

Keywords:

Dynamic Recrystallization (DRX), Hot Working, Segregation, Thermo-Span

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References

[1] Deng Bo, Han Guangwei, Feng Di. Development of low thermal expansion superalloys and their application in aerospace. J. Aeronaut. Mater. 23(2003) 244-249.

Google Scholar

[2] E A Wanner, D.A. Daniel. Development of a new controlled Thermal Expansion superalloy with improved oxidation resistance. In: S.D. Antolovich, eds. Superalloys 1992. TMS, Warrandele, PA. 1992. 237-246.

DOI: 10.7449/1992/superalloys_1992_237_246

Google Scholar

[3] R.B. Frank. The long-term thermal stability of Thermo-Span alloy. JOM. 52(2000) 37-39.

DOI: 10.1007/s11837-000-0113-1

Google Scholar

[4] Lianxu Yu, Yaru Sun, Wenru Sun, et al. Effect of B on the microstructure and properties of a low thermal expansion superalloy. Mater. Sci. Technol. 29(2013) 1470-1477.

Google Scholar

[5] Z. Miao, A. Shan, J. Lu, H.W. Song. Segregation and diffusion characterization in two-stage homogenization of conventional superalloy. Mater. Sci. Technol. 27(2011) 1551-1557.

DOI: 10.1179/026708310x12815992418139

Google Scholar

[6] G.W. Han, Y.Y. Zhang. Segregation of niobium and aluminum in GH783 alloy ingots. Mater. Sci. Eng. A. 412(2005) 198-203.

DOI: 10.1016/j.msea.2005.07.066

Google Scholar

[7] Information on http://www.cartech.com/ssalloysprod.aspx?id=2152.

Google Scholar