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Effect of Hf Content on the Stress Rupture Properties of the Second-Generation Single-Crystal Superalloy with LAB

  • Yipeng ZhangEmail author
  • Jianchao Qin
  • Zhaohui Huang
  • Renjie Cui
  • Kai Guan
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 217)

Abstract

The bicrystal slabs of the DD5 alloy were cast using the bi-seeded crystals. The influence of different Hf contents on the stress rupture properties with low angle boundary (LAB) of the second-generation single-crystal superalloy DD5 was investigated. The results showed that the stress rupture properties decreased with the increase of the misorientation on the same test conditions of 980 °C/250 MPa. The fracture characteristic of the specimen showed a transformation from plastic rupture to intergranular rupture with the increase of misorientation.

Keywords

Single-crystal superalloy Hf Low angle boundary Stress rupture properties 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Yipeng Zhang
    • 1
    Email author
  • Jianchao Qin
    • 1
  • Zhaohui Huang
    • 1
  • Renjie Cui
    • 1
  • Kai Guan
    • 1
  1. 1.Science and Technology on Advanced High Temperature Structural Materials LaboratoryBeijing Institute of Aeronautical MaterialsBeijingChina

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