Work

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

Year: 2024

Type: article

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.

Source: Materials Research Letters

DOI: 10.1080/21663831.2024.2396033

Authors: Yingbo Bai, Rui Zhang, Chuanyong Cui, Yizhou Zhou, Xiaofeng Sun

Institutions: University of Science and Technology of China, Chinese Academy of Sciences, Institute of Metal Research

Language: English

Topic: High Temperature Alloys and Creep

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,459