header

A Comparable Study on Stray Grain Susceptibilities on Different Crystallographic Planes in Single Crystal Superalloys

35 Pages Posted: 17 Jul 2020 Publication Status: Accepted

See all articles by J. C. Guo

J. C. Guo

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

P. Rong

Chengdu Aircraft Industrial (Group) Co., Ltd

W. Chen

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

S. X. Han

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

R. N. Yang

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

X. W. Lei

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

Nan Wang

Northwestern Polytechnical University, China - MOE Key Laboratory of Materials Physics and Chemistry Under Extraordinary Conditions; Northwestern Polytechnical University, China - Key Laboratory of Space Applied Physics and Chemistry

Abstract

The substrate orientation can affect the stray grain formation in laser remelted single crystal superalloys. A systematic investigation on the effect of substrate orientation on stray grain susceptibility was performed by varying laser scanning directions on three most conventional crystallographic planes (001), (011), and (111). We found that the scanning direction has a drastic effect on stray grain formation in (011) and (111) planes but shows less impact in (001) plane. The comparison of different planes reveals that the stray gain susceptibility in (011) plane is the weakest whereas that in (111) plane is the strongest. This can be attributed to the lower volume fraction of the local stray grains on the (011) plane. Our results show that stray gain can be depressed most effectively if a laser repair is performed in (011) plane along [100] direction, which can provide an in-depth insight into the mechanism of how to avoid stray grain formation in the future laser repair of single crystal components.

Keywords: Single crystal superalloys, Substrate orientation, Stray grain susceptibility, Laser Processing

Suggested Citation

Guo, J. C. and Rong, P. and Chen, W. and Han, S. X. and Yang, R. N. and Lei, X. W. and Wang, Nan, A Comparable Study on Stray Grain Susceptibilities on Different Crystallographic Planes in Single Crystal Superalloys. Available at SSRN: https://ssrn.com/abstract=3649207 or http://dx.doi.org/10.2139/ssrn.3649207

J. C. Guo (Contact Author)

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

P. Rong

Chengdu Aircraft Industrial (Group) Co., Ltd

W. Chen

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

S. X. Han

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

R. N. Yang

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

X. W. Lei

Key Laboratory of Space Applied Physics and Chemistry, School of Physical Science and Technology, Northwestern Polytechnical University

Nan Wang

Northwestern Polytechnical University, China - MOE Key Laboratory of Materials Physics and Chemistry Under Extraordinary Conditions ( email )

127# YouYi Load
XiAn, Shaanxi 710072
China

Northwestern Polytechnical University, China - Key Laboratory of Space Applied Physics and Chemistry ( email )

Xi'an
China

Do you have negative results from your research you’d like to share?

Paper statistics

Downloads
36
Abstract Views
379
PlumX Metrics