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New Ni3Al-based directionally-solidified superalloy IC10

  • Xi Hong Zhao*
  • , Zhao Hui Huang
  • , Yong Ning Tan
  • , Qiang Zhang
  • , Qian Yu
  • , Hui Bin Xu
  • *Corresponding author for this work
  • Beijing Institute of Aeronautical Materials
  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

A new alloy named as IC10 for aero-engine vane with a service temperature of 1100°C is introduced in this paper. The alloy's composition is characterized by no Ti, 1.5wt% Hf and higher than 19wt% of Al + Ta + Cr. This alloy exhibits superior oxidation resistance and excellent castability. Furthermore, its stress-rupture strength is at the same level with abroad first-generation DS superalloy. The carbides of IC10 alloy is mainly composed of TaC and HfC. Moreover, the formation of M6C is suppressed by the secondary MC(2). The incipient melting temperature is increased by elemination of Ni5Hf through a pre-treatment at 1180°C for 2 h. The low cycle fatigue life of IC10 alloy at 700°C and 980°C was obtained respectively. The thermal-mechanical fatigue test under the condition of 600°C 1100°C was conducted, and the thermal-mechanical fatigue life of IC10 alloy with in-phase and out-of-phase was presented. The aero-engine high-pressure vanes that were made of IC10 alloy is being under PRFT.

Original languageEnglish
Pages (from-to)20-24
Number of pages5
JournalJournal of Aeronautical Materials
Volume26
Issue number3
StatePublished - Jun 2006

Keywords

  • Castability
  • Fatigue
  • Oxidation
  • Stress rupture
  • Superalloy

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