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http://dx.doi.org/10.3795/KSME-A.2013.37.3.333

Fatigue Characteristics and Compressive Residual Stress of Shot Peened Alloy 600 Under High Temperature  

Kim, Jong Cheon (Graduate School of NID Fusion Technology, Seoul Nat'l Univ. of Science & Technology)
Cho, Hong Seok (KEPCO Plant Service & Engineering co., LTD.)
Cheong, Seong Kyun (Dept. of Mechanical Engineering, Seoul Nat'l Univ. of Science & Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.37, no.3, 2013 , pp. 333-338 More about this Journal
Abstract
The compressive residual stress and fatigue behavior of shot peened alloy 600 under a high-temperature environment is investigated in this study. Alloy 600 is used in the main parts of nuclear power plants, and the compressive residual stress induced by the shot peening process is considered to prevent SCC (stress corrosion cracking). To obtain practical results, the fatigue characteristics and compressive residual stress are evaluated under the actual operating temperature of a domestic nuclear power plant, as well as a high-temperature environment. The experimental results show that the peening effects are valid at a high temperature lower than approximately $538^{\circ}C$, which is the threshold temperature. The fatigue life was maintained at temperatures lower than $538^{\circ}C$, and the compressive residual stress at $538^{\circ}C$ was 68.2% of that at room temperature. The present results are expected to be used to obtain basic safety and reliability data.
Keywords
Alloy 600; Shot Peening; Residual Stress; Fatigue Behavior; High-Temperature;
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Times Cited By KSCI : 1  (Citation Analysis)
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