Influence of Master Alloy on the Cleanliness of Spray Formed Superalloy

Wen Yong Xu; Zhou Li; Hua Yuan; Yue Wang; Na Liu; Guo Qing  Zhang

doi:10.4028/www.scientific.net/MSF.788.421

Paper Titles

Analysis of Abnormal Fracture Occurring during Full Scale Tension Increasing to Failure Test of High Strength Low Alloy Steel Casing
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Dynamic Recrystallization Behavior of N08028 Corrosion Resistant Alloy
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Microstructure and Mechanical Properties of Microalloyed Multiphase Steel
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High Cycle Fatigue Behavior of a Wrought Nickel-Base Superalloy GH4698
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Influence of Master Alloy on the Cleanliness of Spray Formed Superalloy
p.421

Effect of Ta on the Solidification Behavior of Ni₃Al-Base Single-Crystal Superalloys
p.426

Nitrogen-Bearing Carbides in K417G Alloy Doped with Different Nitrogen Contents
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Uniaxial Compression Test and FEM Simulation for GH4145 Superalloy at Room Temperature
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Effect of Element V on the Microstructure and Mechanical Properties of DZ417G Superalloy
p.446

HomeMaterials Science ForumMaterials Science Forum Vol. 788Influence of Master Alloy on the Cleanliness of...

Influence of Master Alloy on the Cleanliness of Spray Formed Superalloy

Abstract:

Three kinds of master alloys, including scrap material, vacuum induction melting (VIM) ingot and electro slag remelting (ESR) ingot, were spray formed into different billets. The influence of master alloy on the cleanliness of spray formed superalloy was investigated by means of electron beam (EB) button melting and Scanning Electron Microscopy (SEM), on the basis of optimized process of spray forming and EB button melting. The results show that the inclusions in spray formed preform are mainly composed of alumina and magnesia, stem from master alloy and some refractory materials in the process of remelting. The cleaner the master alloy, the lower level of inclusion contents of the billet. Among three kinds of master alloys, the ESR ingot exhibit the cleanest melt surface in the process of re-melting and contains much smaller inclusions in EB button. The cleanliness of spray formed billet is better than ingot stack for deposition. Superclean sprayforming billet with smaller size inclusions (<100μm) can be attained by the ESR ingots.

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Periodical:

Materials Science Forum (Volume 788)

Pages:

421-425

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.788.421

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Online since:

April 2014

Authors:

Wen Yong Xu*, Zhou Li, Hua Yuan, Yue Wang, Na Liu, Guo Qing Zhang

Keywords:

Inclusion, Spray Forming, Superalloy

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References

[1] S. Reichman and D. S. Chang, Powder Metallurgy. Superalloy Ⅱ. John Wiley & Sons, New York, 1987.

Google Scholar

[2] P. Kantzos, P. Bonnacuse, J. Telesman, Effect of powder cleanliness on the fatigue behavior of powder metallurgy Ni-disk alloy Udimet 720, in K. A. Green (Eds), Superalloy 2004, TMS, Pennsylvania, 2004, pp.409-417.

DOI: 10.7449/2004/superalloys_2004_409_417

Google Scholar

[3] K.O. Findley, A. Saxena, Low cycle fatigue in Rene 88DT at 650 deg C: crack nucleation mechanisms and modeling, Metallurgical and materials transactions. A, 37A (2006) 1469-1475.

DOI: 10.1007/s11661-006-0091-1

Google Scholar

[4] J. M. Stencel, T. X. Li, J. K. Neathery, Removal of ceramic defects from a superalloy powder using turboelectric processing, in: T. M. Pollock (Eds), Superalloys 2000, TMS, Pennsylvania, 2000, pp.95-99.

DOI: 10.7449/2000/superalloys_2000_95_99

Google Scholar

[5] Anthony Banik, The mechanical property response of turbine disks produced using advanced PM processing techniques, in: T. M. Pollock (Eds), Superalloys 2000, TMS, Pennsylvania, 2000, pp.69-74.

Google Scholar

[6] G. Q. Zhang , Z. Li and Z. W. Liu, Spray forming and thermal processing for high performance superalloys, Mater. Sci. Forum. 475-479 (2005) 2773-2778.

DOI: 10.4028/www.scientific.net/msf.475-479.2773

Google Scholar

[7] V. Lachenicht, G. Scharf, D. Zebrowski, Spray forming a promising process for making high-quality steels and alloys, Metallurgist, 54 (2011) 656-668

DOI: 10.1007/s11015-011-9354-1

Google Scholar