ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
In this study the fatigue properties due to cavitation damage of flame-quenched8.8Al-bronze (8.8Al-4.5Ni-4.5Fe-Cu) as well as current nuclear pump materials (8.8Al-bronze,SUS316 and SR50A) have been investigated by using an ultrasonic vibratory cavitation test. Forthis the impact loads of cavitation bubbles generated by ultrasonic vibratory device quantitativelyevaluated and simultaneously the cavitation erosion experiments have been carried out. The fatigueanalysis on the cavitation damage of the materials has been made from the determined impact loaddistribution (e.g. impact load, bubble count) and erosion parameters (e.g. incubation period, MDPR).According to Miner’s law, the exponents b of the F-N relation (Fb[removed info] N = Constant) at the incubationstage (N: the number of fracture cycle) were 5.62, 4.16, 6.25 and 8.1 for the 8.8Al-bronze,flame-quenched sample, SUS316 and SR50A alloys, respectively. At steady-state, the exponents bof the F-N[removed info] curve (N[removed info]: the number of cycles required for a 1μm increment of MDP) weredetermined as 6.32, 5, 7.14 and 7.76 for the 8.8Al-bronze, flame-quenched sample, SUS316 andSR50A alloys, respectively
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.118.463.pdf
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