Effect of liquid metal composition and test material on cavitation erosion

Yada, Hiroki; Kurachi, Hiroaki*; Tsukimori, Kazuyuki; Hattori, Shuji*

Nihon Kikai Gakkai Rombunshu, A, 77(773), p.146 - 153, 2011/01

https://doi.org/10.1299/kikaia.77.146

Cavitation erosion tests using a vibratory apparatus were carried out to study the effect of liquid metal composition and test material of different stainless steels. The relative temperature was defined as the percentage between freezing and boiling points. At relative temperature at 14C, the erosion rate is 10-12 times in various lead - bismuth alloys, and 2-5 times in sodium, as compared with that in deionized water. When SUS304 was exposed to cavitation in PbBi, the surface was work hardened 20% harder compared with original surface. In deionized water, SUS304 was work hardened by 5%. Therefore, we can conclude that larger collapse pressure can be estimated to act on the specimen surface in lead - bismuth, as compared with that in water. The erosion rate of stainless steels depends on hardness and Hirayama's Ni equivalent. Erosion resistance is the highest for SUS304 and decreases in order of a 9Cr-1Mo steel and SUS403.

Fundamental study on cavitation erosion in liquid metal; Effect of liquid parameter on cavitation erosion in liquid metals (Joint research)

Hattori, Shuji*; Inoue, Fumitaka*; Kurachi, Hiroaki*; Watashi, Katsumi; Tsukimori, Kazuyuki; Hashimoto, Takashi; Yada, Hiroki

JAEA-Research 2008-080, 45 Pages, 2009/02

JAEA-Research-2008-080.pdf:2.86MB

Research on cavitation erosion in liquid metal is very important to confirm the safety of fast breeder reactor using sodium coolant. In this study, a cavitation erosion test apparatus was developed to carry out the erosion tests in low-temperature liquid metals. Cavitation erosion tests were carried out in liquid lead-bismuth alloy and in deionized water. We discuss the effect of liquid parameters and temperature effects on the erosion rate. We reach to the following conclusions. The erosion rate was evaluated in terms of a relative temperature which was defined as the percentage between freezing and boiling points. At 14 C relative temperature, the erosion rate is 10 times in lead-bismuth alloy, and 2 to 5 times in sodium, compared with that in deionized water. The erosion rate can be evaluated as a function of material density and sound velocity. Finally, the temperature dependence was discussed in term of liquid vapor pressure.

Study on giga-cycle fatigue characteristics at high temperature

Hattori, Shuji*; Ito, Takamoto*; Watashi, Katsumi; Hashimoto, Takashi

JNC TY4400 2005-003, 82 Pages, 2005/09

no abstracts in English

Effect of liquid parameter on cavitation erosion in liquid metals

Hashimoto, Takashi; Hattori, Shuji*; Inoue, Fumitaka*; Watashi, Katsumi

no journal, , 

Research on cavitation erosion in liquid metal is very important problem to confirm the safety of the fast breeder reactor using sodium coolant and to solve the problem of cavitation erosion in a liquid-mercury target of spallation neutron source. In this study, the cavitation erosion test apparatus was developed to carry out in liquid metals at low temperatures. Erosion tests of SUS304 were carried out in lead-bismuth and deionized water. Mass loss was measured at various liquid temperatures in lead-bismuth and deionized water.

Effect of kind of liquid metals and hydrodynamics parameters on cavitation erosion

Hattori, Shuji*; Inoue, Fumitaka*; Kurachi, Hiroaki*; Tsukimori, Kazuyuki; Yada, Hiroki

no journal, , 

no abstracts in English

Effect of sea salt concentration on stress corrosion cracking of SUS304

Bin Mohd Nor, M. S.*; Hattori, Shuji*; Tsukimori, Kazuyuki; Yada, Hiroki

no journal, , 

no abstracts in English

Cavitation inception of lead-bismuth alloy in an orifice

Yada, Hiroki; Kurachi, Hiroaki*; Suzuki, Katsuaki*; Tsukimori, Kazuyuki; Hattori, Shuji*

no journal, , 

Research on cavitation erosion in liquid metal is very important to confirm the safety of fast breeder reactor using sodium coolant and to understand cavitation erosion of spallation in the liquid-mercury target of a neutron source. At the erosion test on vibration cavitation in water and in lead-bismuth, erosion rate in lead-bismuth is ten times as fast as in water. In this study, the flowing system apparatus was developed for cavitation inception test using an orifice in liquid metal. The cavitation inception tests were carried out in liquid metal of lead-bismuth and deionized water. We discussed parameters of cavitation inception. Cavitation inception is not dependent on flow velocity both in deionized water and in lead-bismuth. And incipient cavitation number is between 0.8 and 0.6.

Removal of sea salt and prevention against external stress corrosion cracking of SUS304 steel using a cavitating liquid jet

Mohammad Syafiq Bin Mohd Nor*; Yada, Hiroki; Zhang, S.*; Tsukimori, Kazuyuki; Hattori, Shuji*

no journal, , 

no abstracts in English

Cavitation inception in liquid Pb-Bi flow and the effect of nozzle geometry

Hattori, Shuji*; Kanagawa, Akihiro*; Yada, Hiroki

no journal, ,