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Improved Creep Property of Super304H Steel with Minute Amounts of TiC/TiB2 Nano-Particles at 600 °C and 330 MPa.
- Source :
- Metals & Materials International; Jul2024, Vol. 30 Issue 7, p1805-1816, 12p
- Publication Year :
- 2024
-
Abstract
- Super304H steel, imbued with trace amounts of TiC/TiB<subscript>2</subscript> nano-particles, was fabricated to assess the influence of nano-particles on its creep properties under the condition of 600 °C/330 MPa. Our findings elucidate that the inclusion of trace TiC/TiB<subscript>2</subscript> led to a 21% improvement in the creep life of Super304H steel, while diminishing the creep rate from 6.6 × 10<superscript>−5</superscript> h<superscript>−1</superscript> to 5.7 × 10<superscript>−5</superscript> h<superscript>−1</superscript>. The synergistic precipitation strengthening of the nano-scale Cu-rich phases, needle-like M<subscript>23</subscript>C<subscript>6</subscript> phases, and NbN phases was primarily responsible for this exceptional creep resistance. During the long-term creep process, the nano-scale Cu-rich phase was very stable with little change. In the Super304H steel, M<subscript>23</subscript>C<subscript>6</subscript> and NbN phases had a non-coherent interface and an orientation relationship of 001 NbN // 001 M 23 C 6 . M<subscript>23</subscript>C<subscript>6</subscript> and NbN phases in the Super304H steel incorporating minute TiC/TiB<subscript>2</subscript> nano-particles also had a non-coherent interface but a 1 - 10 NbN // 2 - 33 M 23 C 6 orientation relationship. The M<subscript>23</subscript>C<subscript>6</subscript> and NbN phases effectively impede the dislocation movement and were shown to increase the creep strength considerably. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15989623
- Volume :
- 30
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Metals & Materials International
- Publication Type :
- Academic Journal
- Accession number :
- 178295600
- Full Text :
- https://doi.org/10.1007/s12540-023-01605-5