Experimental study on fretting wear of inconel 690 under high temperatures and pressures

Title
Experimental study on fretting wear of inconel 690 under high temperatures and pressures
Author(s)
이춘열배준우이주석[이주석]
Keywords
Dynamic viscosities; Experimental parameters; Experimental studies; Fretting Weai; Fretting wear; High temperature; Impact; Inconel; Inconel 690; Low temperatures; Room temperature; Support structures; Wear coefficient; Nuclear power plants; Simulators; Steam generators; Tribology; Tubes (components); Fretting corrosion
Issue Date
201206
Citation
Transactions of the Korean Society of Mechanical Engineers, A, v.36, no.6, pp.637 - 644
Abstract
In a nuclear power plant, fretting wear due to impact motion between U-tubes and support structures located in steam generators can cause serious problems. In order to guarantee the reliability of the steam generator, the damage due to fretting wear should be thoroughly investigated. The purpose of this study is to elucidate the fretting wear mechanism qualitatively and quantitatively. Hence, fretting wear simulation is performed for the environments to which the actual steam generators in nuclear power plants are exposed. Initial experimental results are obtained for various experimental parameters, and the effect of the work rate and temperature on fretting wear is evaluated. In water, the wear coefficients for 90��C, 200��C, and 340��C are found to be 9.051��10 -16 Pa -1, 3.009��l0 -15 Pa -1, and 2.235��l0 -15 Pa -1, respectively. It is also found that the wear coefficient at room temperature is larger than that at low temperature in water because of the dynamic viscosity of water. ? 2012 The Korean Society of Mechanical Engineers.
URI
http://hdl.handle.net/YU.REPOSITORY/27999http://dx.doi.org/10.3795/KSME-A.2012.36.6.637
ISSN
1226-4873
Appears in Collections:
공과대학 > 기계공학부 > Articles
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