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http://dx.doi.org/10.3365.KJMM.2010.48.01.019

Small Punch Creep Evaluation and Microstructure Analysis in Aged P122 Steel  

Kim, Bum-Joon (Material Strength & Computational Bioengineering Lab, School of Mechanical Engineering, Sungkyunkwan University)
Kim, Moon-K (Material Strength & Computational Bioengineering Lab, School of Mechanical Engineering, Sungkyunkwan University)
Dung, Hoang Tien (Material Strength & Computational Bioengineering Lab, School of Mechanical Engineering, Sungkyunkwan University)
Lim, Byeong-Soo (Material Strength & Computational Bioengineering Lab, School of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Korean Journal of Metals and Materials / v.48, no.1, 2010 , pp. 19-27 More about this Journal
Abstract
This paper investigates the influence of aging time on creep properties via a small punch creep test and evaluates the microstructural change of P122 steel at $600^{\circ}C$. The area fraction of precipitates was quantitatively analyzed to identify the relationship between the creep rupture life and precipitates was coarsening behavior of precipitates along the grain boundaries was also investigated for various aging times. It is found that this coarsening behavior led to a loss of solution hardening and rewulte in a hardness drop and a reduction of creep life.
Keywords
P122; ultra super critical power plant; creep; small punch; martensite; precipitates; aging; coarsening; Laves phase; prior austenite grain boundary; sub-grain;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 5
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