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논문 기본 정보

자료유형
학술저널
저자정보
Xingyu Liu (Changchun University of Technology) Ying Han (Changchun University of Technology) Zhenxin Duan (Changchun University of Technology) Guoqing Zu (Changchun University of Technology) Feng Qiu (Jilin University) Weiwei Zhu (Changchun University of Technology) Xu Ran (Changchun University of Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.30 No.7
발행연도
2024.7
수록면
1,805 - 1,816 (12page)
DOI
10.1007/s12540-023-01605-5

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초록· 키워드

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Super304H steel, imbued with trace amounts of TiC/TiB2 nano-particles, was fabricated to assess the influence of nanoparticleson its creep properties under the condition of 600 °C/330 MPa. Our findings elucidate that the inclusion of traceTiC/TiB2 led to a 21% improvement in the creep life of Super304H steel, while diminishing the creep rate from 6.6 × 10−5h−1 to 5.7 × 10−5 h−1. The synergistic precipitation strengthening of the nano-scale Cu-rich phases, needle-like M23C6phases,and NbN phases was primarily responsible for this exceptional creep resistance. During the long-term creep process, thenano-scale Cu-rich phase was very stable with little change. In the Super304H steel, M23C6and NbN phases had a noncoherentinterface and an orientation relationship of [001]NbN//[001]M23C6 . M23C6and NbN phases in the Super304H steelincorporating minute TiC/TiB2 nano-particles also had a non-coherent interface but a −1 10 NbN// −2 33 M23C6orientationrelationship. The M23C6and NbN phases effectively impede the dislocation movement and were shown to increase the creepstrength considerably.

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