A method for increasing the supersolvus critical strain for recrystallization in single-crystal superalloys

Sicong Lin; Kai Chen; Qiang Zeng; Upadrasta Ramamurty

doi:10.1080/21663831.2023.2253267

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A method for increasing the supersolvus critical strain for recrystallization in single-crystal superalloys

Original Reports | 更新时间：2026-08-19

- A method for increasing the supersolvus critical strain for recrystallization in single-crystal superalloys
- Materials Research Letters Vol. 11, Issue 10, Pages: 856-862(2023)
- 作者机构：
  
  1. a Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University
  2. b Beijing Key Laboratory of Advanced High Temperature Materials Central Iron and Steel Research Institute
  3. c School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore
  4. d Institute of Materials Research Engineering Agency for Science Technology and Research
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2253267
  CLC：
- Online First：04 September 2023，
  
  Published：2023
- 稿件说明：
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Sicong Lin, Kai Chen, Qiang Zeng, et al. A method for increasing the supersolvus critical strain for recrystallization in single-crystal superalloys[J]. Materials Research Letters, 2023, 11(10): 856-862.
DOI：

Sicong Lin, Kai Chen, Qiang Zeng, et al. A method for increasing the supersolvus critical strain for recrystallization in single-crystal superalloys[J]. Materials Research Letters, 2023, 11(10): 856-862. DOI： 10.1080/21663831.2023.2253267.

摘要

Abstract

Recrystallization

possibly triggered during heat treatments by plastic strains of only 1–2%

is highly deleterious to Ni-based single-crystal superalloys. Herein

we successfully recover plastic deformation and enhance the supersolvus critical strain for recrystallization by ramping the annealing temperature slowly from 1100 °C to γ′-solvus point. This preempts recrystallization during the subsequent supersolvus solutionizing treatment. The proposed method is validated in single-crystals compressed to 5.9% plastic strain at room temperature. After supersolvus solutionizing

an almost dislocation-free single-crystal with uniformly distributed γ′-precipitates is obtained. The proposed method offers a practical means to bring down the overall expenses of single-crystal turbine blades.

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Related Author

Hongfei Zhang

Kai Chen

Sicong Lin

Rui Fu

Bozhao Zhang

Jun Ding

Zongqiang Feng

Xiaoxu Huang

Related Institution

a State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University

b International Joint Laboratory for Light Alloys (MOE) College of Materials Science and Engineering Chongqing University

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