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Comparison Between Multi-Axial Forging and Multi-Axial Diagonal Forging of AA1100 Using Finite Element Analysis
유한요소해석을 이용한 AA1100의 다축 단조와 다축대각 단조의 비교
Hyo-Tae Jeong, MinSeong Kim, SangChul Kwon, SunTae Kim, Seong Lee, Shi-Hoon Choi
정효태, 김민성, 권상철, 김순태, 이성, 최시훈
Korean J. Met. Mater. 2019;57(1):18-27.   Published online 2018 Dec 14
DOI: https://doi.org/10.3365/KJMM.2019.57.1.18

Abstract
The effect that forging routes (3 routes, A-C) exert on the development of deformation heterogeneity in AA1100 was theoretically performed using finite element analysis. Route A corresponded to a forging process that involved from 1 to 6 passes through multi-axial diagonal forging (MADF); Route B corresponded to a forging process..... More

                        
Microstructural Evolutions of 22Cr-9Mo-3Fe-4Nb Nickel-Base Superalloy During Low Cycle Fatigue
22Cr-9Mo-3Fe-4Nb 니켈기 초내열합금의 저주기 피로에 따른 미세조직변화
Youngseok Song, Jinik Suk, Chung Yun Kang
송영석, 석진익, 강정윤
Korean J. Met. Mater. 2017;55(9):609-614.   Published online 2017 Aug 30
DOI: https://doi.org/10.3365/KJMM.2017.55.9.609

Abstract
A new Ni based superalloy with high fatigue resistance and fine grain was considered as a material for high-pressure buckets in fossil fuel power plants. Since such buckets are usually exposed to extreme operating conditions, low cycle fatigue tests were conducted to understand the microstructure evolution of the material during..... More

      
Microstructural Changes of 22Cr-9Mo-3Fe-4Nb Ni-Base Superalloy during Creep
Youngseok Song, Jinik Suk, Chung-Yun Kang
Korean J. Met. Mater. 2017;55(7):486-491.   Published online 2017 Jul 4
DOI: https://doi.org/10.3365/KJMM.2017.55.7.486

Abstract
A new Ni based superalloy is considered as bucket material because of high fatigue resistance with fine grain. However a bucket is usually exposed to high temperature for a long time, so creep rupture tests were conducted to understand the microstructure evolution during creep deformation under various stresses at temperatures..... More

      
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