Reduction of Cavitation Erosion of the Bronze CuAl10Ni5Fe2.5Mn1 by Laser Remelting Treatment

Octavian Victor Oancă; Ion Mitelea; Ilare Bordeasu; Cristian Ghera

doi:10.4028/www.scientific.net/AMR.1111.133

Paper Titles

Application of Fracture Mechanics to Determine the Remaining Lifetime of the Old Steel Bridges Decks
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Effect of Solution Treatment Temperature upon the Cavitation Erosion Resistance of X5CrNi18-10 Stainless Steel
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Compatibility of Endurance Limit and Fatigue Crack Growth Parameters in Evaluation of Low Alloyed Steel Welded Joint Behaviour
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Mechanical Hardening and Resistance to Cavitation Erosion of the Austenitic Stainless Steels with Varying Proportions of Delta Ferrite
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Reduction of Cavitation Erosion of the Bronze CuAl10Ni5Fe2.5Mn1 by Laser Remelting Treatment
p.133

On the Influence of Damage-Caused Global Stiffness Decrease upon Structural Modal Parameters
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The Influence of Cooling Rate from High Temperature upon the Cavitation Erosion Resistance of the Duplex Stainless Steel X2CrNiMoN22-5-3
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Evaluation of Secondary Hardening and Microstructure in the Real T24 Steel Weld Joint
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Built-Up Cold-Formed Steel Beams with Corrugated Webs Connected with Spot Welding
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1111Reduction of Cavitation Erosion of the Bronze...

Reduction of Cavitation Erosion of the Bronze CuAl10Ni5Fe2.5Mn1 by Laser Remelting Treatment

Abstract:

The paper presents a new procedure for bronze surface hardened by using intensive heating with laser beams (over 103 °C/s) which superficially melts the material. Afterwards the whole mass of the piece is subjected to blast cooling. For the used experimental conditions it was obtained a fine quenching microstructure with high harnesses, till 350 HV 0.5. The resulted structure has extremely fine grains which give an excellent resistance to cavitation erosions, because the dislocations movemement was heavily suppressed. Secondary, the residual compression tensions existing in the superficial layer delay the initiation of the cracks. Tertiary, the effects of bubble implosions are attenuated as a result of the holes realized on the surface by the laser beams treatment. Finally, the power of the laser beams upon the increase of the cavitation resistance was put into evidence.

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Periodical:

Advanced Materials Research (Volume 1111)

Pages:

133-138

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1111.133

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Online since:

July 2015

Authors:

Octavian Victor Oancă*, Ion Mitelea, Ilare Bordeasu, Cristian Ghera

Keywords:

Bronze, Cavitation Resistance, Characteristic Curves, Mechanical Properties, Microstructure

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References

[1] Bordeaşu, I., Mitelea,I., Cavitation erosion behavior for some stainless steels with constant nickel and variable chromium content, MP Materiall testing, Issue 01, ISSN: 0025-530, pp.53-58, (2012).

DOI: 10.3139/120.110297

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[4] ** Standard test method for cavitation erosion using vibratory apparatus ASTM G32-(2010).

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