High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy

Yunsong Zhao; Na Li; Li Wang; Junyang He; Weihong Liu; Min Song

doi:10.1080/21663831.2023.2254910

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High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy

Original Reports | 更新时间：2026-08-19

- High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy
- High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy
- 材料研究快报（英文） 2023年11卷第10期页码：888-895
- 作者机构：
  
  1. a Science and Technology on Advanced High Temperature Structural Materials laboratory Beijing Institute of Aeronautical Materials
  2. b State Key Laboratory of Powder Metallurgy Central South University
  3. c School of Materials Science and Engineering Harbin Institute of Technology,Shenzhen
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2254910
  中图分类号：
- 网络首发：2023-09-13，
  
  纸质出版：2023
- 稿件说明：
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Yunsong Zhao, Na Li, Li Wang, 等. High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy[J]. 材料研究快报（英文）, 2023,11(10):888-895.

Yunsong Zhao, Na Li, Li Wang, et al. High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy[J]. Materials Research Letters, 2023, 11(10): 888-895.
Yunsong Zhao, Na Li, Li Wang, 等. High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy[J]. 材料研究快报（英文）, 2023,11(10):888-895. DOI： 10.1080/21663831.2023.2254910.

Yunsong Zhao, Na Li, Li Wang, et al. High-temperature creep-induced site occupation evolution in the γ′ lattice in a Ru-bearing Ni-based superalloy[J]. Materials Research Letters, 2023, 11(10): 888-895. DOI： 10.1080/21663831.2023.2254910.

摘要

Abstract

By using state-of-the-art characterisation techniques including atom probe tomography and atomic resolved elemental mapping

we successfully probed the site occupation evolution associated with composition change in γ′

during 1100°C creep of a fourth generation Ru-bearing Ni-based superalloy. It is quantified that

W and Ru maintain unchanged site preference after creep rupture

while interestingly

the rest elements especially Co

Ta and Re show a weakened preference at both α- and β-sites in the γ′ lattice. This indicates the overall reduced γ′ ordering degree and thus the possible decrease in planar fault energies

which further facilitates dislocation shearing in γ′.

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相关机构

d School of Rehabilitation Medicine Jining Medical University

a State Key Laboratory of High Performance Roll Materials and Composite Forming School of Materials Science and Engineering Tianjin University Tianjin People’s Republic of China

c Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming School of Materials Science and Engineering Shanghai Jiao Tong University

b Suzhou Laboratory Suzhou People’s Republic of China

b Suzhou Laboratory

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