Thermal Shock Influence on some Abrasive Wear Resistant Nickel and Cobalt Complex Alloy’s Microstructure and Properties

Ruxandra Dumitrescu; Ioana Gherghescu; Sorin Ciuca

doi:10.4028/www.scientific.net/AMR.1114.214

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Influence of Rare Earth Metals on Carburizing Kinetics of 21NiCrMo2 Steel
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Thermal Shock Influence on some Abrasive Wear Resistant Nickel and Cobalt Complex Alloy’s Microstructure and Properties
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1114Thermal Shock Influence on some Abrasive Wear...

Thermal Shock Influence on some Abrasive Wear Resistant Nickel and Cobalt Complex Alloy’s Microstructure and Properties

Abstract:

The present paper shows the experimental results obtained on two complex alloys Co-Cr-W-C-Fe-Ni-Si-Mn-Mo and Ni-Cr-Fe-B-Si-C-Co alloys deposited on copper support by welding (TIG). Well - known for their excellent abrasive wear, corrosion and high temperature erosion resistance, these materials were chosen as protective solutions for some highly mechanically and thermally stressed devices, namely the blast tuyeres of blast furnaces. A testing method which simulates as near as possible the real working conditions is the quick thermal shock, consisting in heating at the chosen testing temperature followed by cooling in cool air spray, for 25 cycles. Testing parameters were set according to the blast tuyere device working conditions. In this paper, the coatings microstructure’s comparative changes consequently to quick thermal shock were monitoring, because this affect the device lifetime and mechanical characteristics. The untested samples as well as on quick thermal shocked ones was investigated using X-ray diffraction, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS).

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Periodical:

Advanced Materials Research (Volume 1114)

Pages:

214-218

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1114.214

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Online since:

July 2015

Authors:

Ruxandra Dumitrescu*, Ioana Gherghescu, Sorin Ciuca

Keywords:

Complex Alloys, Copper, Quick Thermal Shock, SEM, XRD

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References

[1] Ryuichi Hori, Blast Tuyere of a Blast Furnace, US Patent 5, 989, 488 (1999).

Google Scholar

[2] M. Hriţac, Blast Tuyere, Patent 107, 421 classification C21B 7/16, RO-BOPI 4/2009 (2009).

Google Scholar

[3] P.K. Domalavage, Process development of cobalt base superalloys modified with hafnium and zirconium, PhD thesis, Boston, MIT, (1980).

Google Scholar

[4] Y. Li, Y. Gao, B. Xiao ş. a., The electronic, mechanical properties and theoretical hardness of chromium carbides by first principle calculation, Journal of Alloys and Compounds, 509 (2001) 5242-5249.

DOI: 10.1016/j.jallcom.2011.02.009

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