[논문]Effect of High Temperature Oxidation on Surface Pit and Recrystallization of Directionally Solidified CM247LC Superalloy in Creep Gauge

Choe, Byung Hak; Choi, Kwang Soo; Han, Sung Hee; Kim, Dae Hyun; Ahn, Jong Kee; Kang, Dong Su; Seo, Seong-Moon

doi:10.3365/kjmm.2023.61.12.951

Effect of High Temperature Oxidation on Surface Pit and Recrystallization of Directionally Solidified CM247LC Superalloy in Creep Gauge 원문보기

대한금속·재료학회지 = Korean journal of metals and materials, v.61 no.12, 2023년, pp.951 - 957

Choe, Byung Hak , Choi, Kwang Soo , Han, Sung Hee , Kim, Dae Hyun , Ahn, Jong Kee , Kang, Dong Su , Seo, Seong-Moon

Abstract ▼ AI-Helper

This study analyzed a recrystallization phenomenon that occurred simultaneously with hightemperature oxidation on the surface of a directionally solidified CM247LC creep specimen, using optical and scanning electron microscopy. After heat treatment, the surface of the specimen subjected to the creep test at 982oC was oxidized by exposure to high temperature and underwent microstructural changes due to high temperature stress. The outermost layer of the oxidized surface pits was found to consist of an oxide of the Cr/Co component, and the lower layer contained an oxide of the Al component. The area adjacent to the surface oxide layer is a precipitated free zone (PFZ) depleted of the y’ precipitated phase. The PFZ is caused by the diffusion of the Al component from this area to the surface oxide layer, resulting in the depletion of y'-Ni3Al as the main Al component. The area adjacent to the PFZ is a y' coarsening layer, which is the result of increasing y' phase fraction and coarsening as the Cr/Co component of this region diffuses into the PFZ of the y phase composition. This y' coarsening and y' rafting occurs in the direction perpendicular to the creep stress. In the EBSD analysis, the PFZ and y' coarsened layer were observed to be recrystallized regions, with the recrystallization composed of a single grain including the PFZ and y' coarsened layer. It is presumed that this recrystallization is caused by the residual stress of one-way solidification or the residual stress of the specimen surface processing. Accordingly, high-temperature oxidation in DS CM247LC creep gauge caused surface pits associated with recrystallization.

참고문헌 (17)

Vdovin 1 2019
Burgel 25 2004
XIE, X., GUO, H., GONG, S., XU, H.. Hot Corrosion Behavior of Double-ceramic-layer LaTi₂Al₉O₁₉/YSZ Thermal Barrier Coatings. Chinese journal of aeronautics, vol.25, no.1, 137-142.

상세보기
Bahamirian, M., Hadavi, S.M.M., Farvizi, M., Keyvani, A., Rahimipour, M.R.. ZrO₂ 9.5Y₂O₃ 5.6Yb₂O₃ 5.2Gd₂O₃; a promising TBC material with high resistance to hot corrosion. Journal of Asian ceramic societies, vol.8, no.3, 898-908.

상세보기
Han 1 2010
Maldini 327 1996
Li 1 2021
Bang, Jinhyeok, Kang, Yongjoon, Kim, Namkyu, Seo, Seong-Moon, Lee, Sanghoon, Song, Sangwoo, Kang, Namhyun. Effect of Aging Heat Treatment Conditions on the Mechanical Properties and Microstructure of Base and Weld Metal of Alloy 282 Superalloy. 대한금속 . 재료학회지 = Korean journal of metals and materials, vol.58, no.8, 540-549.

상세보기
Wei, Dasheng, Liu, Yihui, Wang, Yanrong, Wang, Jialiang, Jiang, Xianghua. Normalized Parameter Creep Model of DD6 Nickel-Based Single Crystal Superalloy. Metals, vol.11, no.2, 254-.

상세보기
Alam, M.Z., Chatterjee, D., Venkataraman, B., Varma, V.K., Das, D.K.. Effect of cyclic oxidation on the tensile behavior of directionally solidified CM-247LC Ni-based superalloy at 870^ooC. Materials science & engineering. properties, microstructure and processing. A, Structural materials, vol.527, no.23, 6211-6218.

상세보기
Yadav, Poonam, Abro, Muhammad Ali, Lee, Dong Bok, Yoon, Jonghun. High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment. Journal of materials research and technology, vol.17, 3055-3065.

상세보기
Giggins, C. S., Pettit, F. S.. Oxidation of Ni-Cr-Al Alloys Between 1000° and 1200°C. Journal of the Electrochemical Society : JES, vol.118, no.11, 1782-.

상세보기
Hu, Ye-Bing, Zhang, Li, Cheng, Cong-Qian, Zhao, Peng-Tao, Guo, Guang-Ping, Zhao, Jie. Oxidation Behavior of the Nickel-Based Superalloy DZ125 at 980 °C. Acta metallurgica sinica : English letters, vol.30, no.9, 857-862.

상세보기
Mallikarjuna, H.T., Caley, W.F., Richards, N.L.. The dependence of oxidation resistance on gamma prime intermetallic size for superalloy IN738LC. Corrosion science, vol.147, 394-405.

상세보기
Xie, G., Zhang, J., Lou, L.H.. Effect of heat treatment atmosphere on surface recrystallization of a directionally solidified Ni-base superalloy. Scripta materialia, vol.59, no.8, 858-861.

상세보기
Dahlén 41 1980
Shin, Yong Kwan, Kang, Byung Il, Youn, Jeong IL, Kwon, Yong Nam, Kim, Young Jig. Effect of Grain Boundary Morphology on the High Temperature Tensile Properties of Developed Ni-Based Superalloy (LESS). 대한금속·재료학회지 = Korean journal of metals and materials, vol.60, no.12, 940-949.

상세보기

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Effect of High Temperature Oxidation on Surface Pit and Recrystallization of Directionally Solidified CM247LC Superalloy in Creep Gauge 원문보기

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