Oxygen changes crack modes of Ni-based single crystal superalloy

Xueqiao Li; Yinong Liu; Yunsong Zhao; Yanhui Chen; Ang Li; Jianfei Zhang; Yadi Zhai; Zhipeng Li; Dongfeng Ma; Xiaochen Li; Qing Zhang; Xiaomeng Yang; Haibo Long; Shengcheng Mao; Ze Zhang; Xiaodong Han

doi:10.1080/21663831.2021.1993367

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Oxygen changes crack modes of Ni-based single crystal superalloy

Original Report | 更新时间：2026-08-19

- Oxygen changes crack modes of Ni-based single crystal superalloy
- Materials Research Letters Vol. 9, Issue 12, Pages: 531-539(2021)
- 作者机构：
  
  1. a Beijing Key Laboratory of Microstructure and Property of Advanced Materials Faculty of Materials and Manufacturing Beijing University of Technology
  2. b Department of Mechanical Engineering The University of Western Australia
  3. a Beijing Key Laboratory of Microstructure and Property of Advanced Materials Faculty of Materials and Manufacturing Beijing University of Technology Beijing People’s Republic of China
  4. c Science and Technology on Advanced High Temperature Structural Materials Laboratory Beijing Institute of Aeronautical Materials
  5. d State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.1993367
  CLC：
- Online First：27 October 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
Xueqiao Li, Yinong Liu, Yunsong Zhao, et al. Oxygen changes crack modes of Ni-based single crystal superalloy[J]. Materials Research Letters, 2021, 9(12): 531-539.
DOI：

Xueqiao Li, Yinong Liu, Yunsong Zhao, et al. Oxygen changes crack modes of Ni-based single crystal superalloy[J]. Materials Research Letters, 2021, 9(12): 531-539. DOI： 10.1080/21663831.2021.1993367.

摘要

Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments. This study uses a newly developed

in-situ

thermal-stress environmental transmission electron microscope to investigate the oxidation and fracture behaviors of Ni-based single crystal superalloy at 650°C under stress. The

in-situ

oxidation was found to change the tensile fracture mode from the close-packed {111} planes of plastic fracture to {001} planes adjacent to γ/γ′ interfaces of brittle fracture. The microanalysis also revealed that the γ′ cuboids

γ phase

and γ/γ interface exhibit different oxidation behavior

thus underscoring the thickness debit effect.

Abstract

Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments. This study uses a newly developed

in-situ

thermal-stress environmental transmission electron microscope to investigate the oxidation and fracture behaviors of Ni-based single crystal superalloy at 650°C under stress. The

in-situ

γ phase

and γ/γ interface exhibit different oxidation behavior

thus underscoring the thickness debit effect.

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