Elucidation of the factors controlling interface decohesion and particle fracture in a friction stir alloyed Al‒Fe alloy system

Sharma, Abhishek; Morisada, Yoshiaki; Ushioda, Kohsaku et al.

Materialia, 2024, 34, 102066

Number of Access:348（2025-08-14 04:34 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/95485

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Title
Elucidation of the factors controlling interface decohesion and particle fracture in a friction stir alloyed Al‒Fe alloy system
Creator
NRID
1000050993705 1000050993705
researchmap permalink
sharma_abhishek sharma_abhishek
Scopus Author ID
57214356255 57214356255
ORCID
0000-0002-3384-861X 0000-0002-3384-861X
CreatorName
Sharma, Abhishek
NRID
1000000416356 1000000416356
researchmap permalink
morisada morisada
CreatorName
Morisada, Yoshiaki
CreatorName
Ushioda, Kohsaku
NRID
1000000247230 1000000247230
ORCID
0000-0002-5023-3844 0000-0002-5023-3844
researchmap permalink
read0051741 read0051741
Scopus Author ID
7403071460 7403071460
CreatorName
Fujii, Hidetoshi
Subject
Aluminum
EBSD
Fe
Friction stir alloying/processing (FSA/P)
Intermetallic
Work hardening
Description
Sharma A., Morisada Y., Ushioda K., et al. Elucidation of the factors controlling interface decohesion and particle fracture in a friction stir alloyed Al‒Fe alloy system. Materialia 34, 102066 (2024); https://doi.org/10.1016/j.mtla.2024.102066.
Abstract
In the present study, an Al‒Fe alloy was fabricated by the solid-state friction stir alloying (FSA) technique. The FSA was carried out at a constant linear speed and variable tool rotational speed ranging from 600 to 1200 RPM. The ultimate tensile strength (UTS) and total elongation (TE) of the alloy fabricated at lower tool rotational speeds (600 and 900 RPM) are ∼ 300 MPa and ∼ 10%, respectively. Whereas the UTS and TE of the alloy fabricated at higher tool rotational speeds (1200 and 1500 RPM) are ∼ 110 MPa and ∼ 20%, respectively. The transition in the fracture behavior of the alloy from brittle to ductile was observed at a tool rotational speed of 900 RPM. The brittle fracture of alloys fabricated at low tool rotational speeds is primarily associated with Al/Fe interface decohesion and coarse Fe particle fracture. Whereas the void growth and coalescence are responsible for ductile fracture in alloys fabricated at higher tool rotational speeds. The transition of the dominant strengthening mechanism from dislocation and precipitation strengthening in alloys fabricated at lower tool rotational speeds to Hall‒Petch strengthening in alloys fabricated at high rotational speeds is the primary reason for the drastic change in the fracture behavior of these alloys. The coarse undissolved Fe particles and finely dispersed Al13Fe4 contributed significantly to kinematic and isotropic work hardening, which resulted in an extremely high work hardening rate in the alloys fabricated at lower tool rotational speeds.
Publisher
Elsevier B.V.
Source Title
Materialia
Volume (Issue)
34
Page
102066
Date of Issued
2024-05-01
Language
English
Handle URL
https://hdl.handle.net/11094/95485
eISSN
25891529
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.mtla.2024.102066
Access Rights
embargoed access
CopyRight
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
The full-text file will be made open to the public on 1 May 2026 in accordance with the publisher's policy.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article