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DOAJ Open Access 2024

Abnormal grain growth in randomly-oriented fine grains in an Al–Mg–Sc–Zr alloy processed by laser-powder-bed-fusion

Yanchi Chen Xiang Chen Han Chen Yakai Xiao Jing Dai +6 lainnya
Lihat Sumber DOI

Abstrak

In this work, we report a counter-intuitive activation of abnormal grain growth (AGG) in randomly-oriented fine grains (FGs) in an L-PBF Al–Mg–Sc–Zr alloy, which is unlikely from perspectives of curvature-driven grain growth, crystallographic texture or strain-induced boundary migration. The observed spontaneous AGG is understood in light of the growth instability of an arbitrary grain in an evolving particle-pinned polycrystalline aggregation. A generalized criterion for AGG is hence proposed, which efficaciously explains the observed susceptibility of FGs to AGG, the presence of multiple AGG activation sites, and the asynchrony of AGG activation.

Topik & Kata Kunci

Materials of engineering and construction. Mechanics of materials

Penulis (11)

Y

Yanchi Chen

X

Xiang Chen

H

Han Chen

Y

Yakai Xiao

J

Jing Dai

Y

Yidan Chen

Y

Yuchi Cui

C

Chengyi Dan

Z

Zhe Chen

X

Xianfeng Li

H

Haowei Wang

Format Sitasi

APA MLA BibTeX
Chen, Y., Chen, X., Chen, H., Xiao, Y., Dai, J., Chen, Y. et al. (2024). Abnormal grain growth in randomly-oriented fine grains in an Al–Mg–Sc–Zr alloy processed by laser-powder-bed-fusion. https://doi.org/10.1080/21663831.2024.2366878

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Informasi Jurnal
Tahun Terbit
2024
Sumber Database
DOAJ
DOI
10.1080/21663831.2024.2366878
Akses
Open Access ✓