Evolution Behavior of M23C6 Carbides Under Different Hot Deformation Conditions in Alloy 602 CA

Xiaoyu Qin; Xiaojun Yan; Dawei Huang; Xiaoyong Zhang; Mingjing Qi; Stephen Yue

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자료유형: 학술저널

저자정보: Xiaoyu Qin (Beihang University) Xiaojun Yan (Beihang University) Dawei Huang (Beihang University) Xiaoyong Zhang (Beihang University) Mingjing Qi (Beihang University) Stephen Yue (McGill University)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.25 No.6

발행연도: 2019.1

수록면: 1,616 - 1,625 (10page)

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Alloy 602 CA is a M23C6carbides strengthened Nickel-based superalloy. In this alloy, M23C6is different from that found inother superalloys because of its high volume fraction, wide size distribution and distinct precipitation locations. To investigateM23C6evolution behaviors during hot deformation in Alloy 602 CA, a series of tests are carried out in this study. Thetest temperature ranges from 900 to 1100 °C and strain rate ranges from 0.001 to 0.1 s−1, with a true strain of 0.7. It is foundthat hot deformation of the material decreases the distance between carbides which leads merging happening to changethe morphology of primary M23C6. Secondary carbides mainly come from the dissolution of large primary carbides andprecipitate along grain boundaries and twin boundaries which impede dynamic recrystallization (DRX) from happening. Volume fractions of M23C6decrease from 900 to 1100 °C. At 900 °C and 1100 °C, the precipitation equilibrium is reachedin the preheating period before hot deformation and deformation only change the size distribution of carbides. 1000 °C isa transition temperature where the volume fraction decreases as strain rate increases. The temperature rise initiated by adiabaticheating has a great influence on this precipitation behavior.

#Hot deformation · Processing parameters · M23C6 behavior · Microstructure

참고문헌 (25)

참고문헌 신청

E. El-Magd / 2007 / Effect of temperature on the creep behavior of a Ni–Cr–Fe–Al alloy : a comparison of the experimental data and a model / J. Mater. Sci 42(14):5666~5670

T. S. Jo / 2010 / Dissociation of Cr-rich M23C6 carbide in Alloy 617 by severe plastic deformation / J. Nucl. Mater 406(3):360~364

T. -H. Lee / 2016 / Effect of a heat treatment on the precipitation behavior and tensile properties of alloy 690 steam generator tubes / J. Nucl. Mater 479:85~92

S. Kihara / 1980 / Morphological changes of carbides during creep and their effects on the creep properties of inconel 617 at 1000 °C / Metall. Trans. A 11(6):1019~1031

P.S. Shankar / 2007 / Effect of trace impurities in helium on the creep behavior of Alloy 617 for very high temperature reactor applications / J. Nucl. Mater 366(1?2):28~36