Precision control of microstructure variation and tensile properties in dissimilar friction stir lap welding joints using an adjustable tool

Kar, Amlan; Morisada, Yoshiaki; Sharma, Abhishek et al.

Scientific Reports, 2025, 15(1), 27330

アクセス数:117件（2026-02-16 12:11 集計）

固定URL: https://hdl.handle.net/11094/102936

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論文情報

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タイトル
Precision control of microstructure variation and tensile properties in dissimilar friction stir lap welding joints using an adjustable tool
著者
著者名
Kar, Amlan
NRID
1000000416356 1000000416356
researchmap permalink
morisada morisada
著者名
Morisada, Yoshiaki
NRID
1000050993705 1000050993705
ORCID
0000-0002-3384-861X 0000-0002-3384-861X
researchmap permalink
sharma_abhishek sharma_abhishek
Scopus Author ID
57214356255 57214356255
著者名
Sharma, Abhishek
NRID
1000000247230 1000000247230
ORCID
0000-0002-5023-3844 0000-0002-5023-3844
researchmap permalink
read0051741 read0051741
Scopus Author ID
7403071460 7403071460
著者名
Fujii, Hidetoshi
キーワード等
Adjustable too
Dissimilar friction stir lap welding
Intercalated structure
Microstructure evolution
Probe rotation speed
Shear strength
Weld interface morphology
内容
Kar A., Morisada Y., Sharma A., et al. Precision control of microstructure variation and tensile properties in dissimilar friction stir lap welding joints using an adjustable tool. Scientific Reports 15, 27330 (2025); https://doi.org/10.1038/s41598-025-12738-5.
抄録
Friction-assisted plastic deformation at the joint interface is essential for achieving the desired joint properties in dissimilar friction stir lap welding (FSLW) of aluminum alloy (Al) with steel (Fe). This plastic deformation can be precisely controlled by using an adjustable tool, where shoulder and probe rotation speeds are independently controlled. This study explores the effect of microstructure evolution and probe rotation speed on the weld’s interface morphology and tensile properties of FSLW joints between an aluminum alloy and steel using an adjustable tool. Microstructure evolution is influenced by inherent material properties and process-induced stress inhomogeneity. Grain refinement in Fe is more gradual compared to Al, which exhibits a homogenous microstructure. Lower probe rotation speeds lead to more significant grain refinement in Al, while increasing probe rotation speeds promote the formation of intermetallic compounds. An intercalated structure with varying fractions and morphology is observed across the joint interface in all welds. The controlled evolution of microstructure and the differences in intercalated structure formation at the weld interface are attributed to variations in shear strength. This study demonstrates the ability of an adjustable tool to tailor the microstructure and tensile properties of FSLW joints, providing a promising approach for enhancing joint performance in dissimilar metal joining applications.
出版者
Nature Research
収録物名
Scientific Reports
巻(号)
15(1)
ページ
27330
刊行年月
2025-07-27
言語
英語
ハンドルURL
https://hdl.handle.net/11094/102936
eISSN
20452322
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1038/s41598-025-12738-5
アクセス権
open access
権利情報
This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article