Evaluation on cavitation damage in sea water with shot peening stand-off distance for ALBC3 alloy

The aim of this study is to investigate the effect of shot peening on stress corrosion cracking of a low carbon steel in ocean water environment. The dimension of specimens were prepared in accordance with the ASTM G39. The hardness testing was carried out using microvickers with 0,25 kgf load in the longitudinal direction. The corrosion cracking test was immersed into artificial sea water for about 7 months. The test shows that the pitting corrosion is dominantly nucleated at the metal film interface. The biggest pitting corrosion was occurred under the static loading of 70 for the specimens unpeened. The presence of pitting corrosion promotes stress corrosion cracking. The cracking has a intergranular branched morphology which is typical for the chloride cracking of low carbon steel

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Cavitation Damage Behavior of Inconel 625 Coating Layer by Arc Thermal Spraying Method in Sea Water

Journal of the Korean institute of surface engineering ◽

10.5695/jkise.2015.48.6.349 ◽

2015 ◽

Vol 48 (6) ◽

pp. 349-353 ◽

Cited By ~ 1

Author(s):

Il-Cho Park ◽

Seong-Jong Kim

Keyword(s):

Sea Water ◽

Coating Layer ◽

Thermal Spraying ◽

Inconel 625 ◽

Cavitation Damage ◽

Damage Behavior ◽

Spraying Method

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Optimization of Testing Method in Comparison with the Coated Composites and Metals by Vibratory Cavitation Test

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.261-263.1397 ◽

2004 ◽

Vol 261-263 ◽

pp. 1397-1402

Author(s):

Yun Hae Kim ◽

Y.J. Son ◽

B.H. Woo ◽

C.W. Bae ◽

S.M. Kim ◽

...

Keyword(s):

Cavitation Erosion ◽

Sea Water ◽

Digital Camera ◽

Test Methods ◽

Vapor Bubbles ◽

Cavitation Damage ◽

Piezoelectric Vibrator ◽

Testing Method ◽

Fluid Handling ◽

Hydrodynamic Phenomenon

Cavitation-erosion is a hydrodynamic phenomenon that results in the formation and collapse of vapor bubbles in a liquid. Cavitation damage is encountered in a wide variety of fluid handling machinery and over a broad range of liquid pressures and temperatures. In this study, cavitation damage was investigated by using the piezoelectric vibrator with 20kHz, 50μm to cavity generation apparatus. At the first cavitation test, coated composite material specimens appear to generating the low bubbles due to damping vibration. This study is mainly compared with cavitation test (ASTM G 32) and modified cavitation test. And it is also concerned with phenomenon of cavitation-erosion on the several materials. In order to compare the both test methods, cavitaion weight loss and rate of the several materials in fresh-water and sea-water measured and observed with digital camera.

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