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자료유형
학술대회자료
저자정보
I.M.W. Ekaputra (Pukyong National University) Woo-Gon Kim (Korea Atomic Energy Research Institute) Jae-Young Park (Pukyong National University) Seon-Jin Kim (Pukyong National University) Min-Hwan Kim (Korea Atomic Energy Research Institute) Yong-Wan Kim (Korea Atomic Energy Research Institute)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2014년도 추계학술대회
발행연도
2014.11
수록면
477 - 480 (4page)

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This study evaluated the CCGR (creep crack growth rate) of type 316LN stainless steel using the Q<SUP>*</SUP> parameter. In a previous investigation, the Q<SUP>*</SUP> parameter was applied for modified 9Cr-1Mo steel under various applied loads and temperatures. It is obvious that the Q<SUP>*</SUP> parameter can be depicted as an independent parameter that was able to distinguish the curves under various applied loads and temperatures. Furthermore, the Q<SUP>*</SUP> parameter for type 316LN SS exhibited a similar characteristic as modified 9Cr-1Mo steel. This showed a simple monotical linear function without a dual value due to nose in the early stage of the CCG curve. The relationship between type 316LN SS and modified 9Cr-1Mo steel can also be performed clearly in the graph by the parallel movement of the curves. The type 316LN SS showed a higher Q<SUP>*</SUP> value than the modified 9Cr-1Mo steel, but it has the same slope value. Meanwhile, the CCGR characteristics were not expressed when using the C<SUP>*</SUP> parameter, which was located at the same band. The Q<SUP>*</SUP> parameter was found to be a powerful parameter that not only is able to characterize the CCGR under various applied loads and temperatures, but also under various type of steels. In addition after the CCG tests of type 316LN SS, a fracture micrograph exhibited an intergranular fracture mode.

목차

Abstract
1. Introduction
2. Experimental Procedures
3. Results and Discussion
4. Conclusions
References

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