Grain refinement and superplasticity of Inconel 718 processed by Multi-Pass High-Pressure sliding

Yongpeng Tang, Kaveh Edalati, Takahiro Masuda, Yoichi Takizawa, Manabu Yumoto, Zenji Horita

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Inconel 718 was successfully processed by multi-pass high-pressure sliding (MP-HPS) for production of ultrafine-grained structures in rods with upsized dimensions. An ultrafine-grained (UFG) structure with an average grain size of ~ 140 nm was developed through rotation of 45°. Tensile testing at 1073 K with an initial strain rate of 2x10-2 s−1 led to superplastic elongations more than 400%. A relation is established between hardness and elongation to failure so that it should be possible to predict the advent of superplasticity only from the hardness measurement.

Original languageEnglish
Article number130144
JournalMaterials Letters
Volume300
DOIs
Publication statusPublished - Oct 1 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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