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PreprintCC BYChemRxiv

Increasing high-temperature creep life via improved directional solidification: A novel Ni-based single crystal superalloy reinforced by in-situ MC carbide fibers

  • H.Y. Guo1,2,3,4
  • Z.H. Tan1,2
  • Y.M. Li1,2
  • J. Meng1,2
  • J.J. Yu1,2
  • X.G. Wang1,2
  • Y.Z. Zhou1,2
4 affiliations
  1. 1Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research
  2. 2Chinese Academy of Sciences
  3. 3School of Materials Science and Engineering
  4. 4University of Science and Technology of China
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Abstract

A Ni-based single crystal superalloy reinforced by in-situ MC carbide fibers has been produced by improved directional solidification, which exhibits excellent hightemperature creep life.The average volume fraction of the carbide fibers of alloy is 2%, lowering the load sharing of the matrix, increasing the creep life by 6 times.Hightemperature creep could induce the discontinuous degeneration of carbide fibers, a twodimensional Ostwald coarsening process controlled by bulk diffusion and interface diffusion.This work demonstrates the potential of the single crystal superalloy reinforced by in-situ carbide fibers as a new candidate of practical turbine blade material.

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Cite

BibTeXRIS
BibTeX
@misc{guo2026increasing,
  title = {{Increasing high-temperature creep life via improved directional solidification: A novel Ni-based single crystal superalloy reinforced by in-situ MC carbide fibers}},
  author = {H.Y. Guo and Z.H. Tan and Y.M. Li and J. Meng and J.J. Yu and X.G. Wang and Y.Z. Zhou},
  howpublished = {ChemRxiv},
  year = {2026},
  month = sep,
  doi = {10.26434/chemrxiv.15009378/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009378/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Increasing high-temperature creep life via improved directional solidification: A novel Ni-based single crystal superalloy reinforced by in-situ MC carbide fibers
AU  - H.Y. Guo
AU  - Z.H. Tan
AU  - Y.M. Li
AU  - J. Meng
AU  - J.J. Yu
AU  - X.G. Wang
AU  - Y.Z. Zhou
PY  - 2026
DA  - 2026/09/23
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15009378/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009378/v1
AB  - A Ni-based single crystal superalloy reinforced by in-situ MC carbide fibers has been produced by improved directional solidification, which exhibits excellent hightemperature creep life.The average volume fraction of the carbide fibers of alloy is 2%, lowering the load sharing of the matrix, increasing the creep life by 6 times.Hightemperature creep could induce the discontinuous degeneration of carbide fibers, a twodimensional Ostwald coarsening process controlled by bulk diffusion and interface diffusion.This work demonstrates the potential of the single crystal superalloy reinforced by in-situ carbide fibers as a new candidate of practical turbine blade material.
ER  -