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In-situ observation of Ni-Co based wrought superalloy high-temperature deformation: lattice rotation and grain boundary response

Authors :
Yingbo Bai
Rui Zhang
Chuanyong Cui
Yizhou Zhou
Xiaofeng Sun
Source :
Materials Research Letters, Vol 12, Iss 11, Pp 869-876 (2024)
Publication Year :
2024
Publisher :
Taylor & Francis Group, 2024.

Abstract

The sensitivity of grain boundary (GB) cracks often limits the high-temperature plasticity of superalloys. The 750 ℃ tensile deformation of fine-grained Ni-Co based wrought superalloys was observed in situ using a scanning electron microscope (SEM) equipped with an electron backscatter diffraction (EBSD) probe to clarify the texture formation and GB response. The GB stress concentration depends on the grain orientation and slip system alignment on both sides. This reflects the ability of GBs to cope with deformation incompatibility. This study provides valuable insights for predicting the failure of polycrystalline superalloys and offers new ideas for microstructure evaluation and GB design.

Details

Language :
English
ISSN :
21663831
Volume :
12
Issue :
11
Database :
Directory of Open Access Journals
Journal :
Materials Research Letters
Publication Type :
Academic Journal
Accession number :
edsdoj.b16e6048a21f47a0bc19f54d22da1772
Document Type :
article
Full Text :
https://doi.org/10.1080/21663831.2024.2396033