Microstructure and Mechanical Properties of Friction Stir Welded Pure Cu Plates

Sun, Yufeng; Xu, Nan; Morisada, Yoshiaki et al.

Transactions of JWRI, 2012, 41(1), 53-58

Number of Access:516（2025-08-14 01:38 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/23160

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Title
Microstructure and Mechanical Properties of Friction Stir Welded Pure Cu Plates
Creator
CreatorName
Sun, Yufeng
CreatorName
Xu, Nan
NRID
1000000416356 1000000416356
CreatorName
Morisada, Yoshiaki
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
Friction stir welding
Microstructure
Mechanical property
pure Cu
Abstract
The process window for the friction stir welding of fully annealed commercial pure Cu was determined at an applied load of 1000kg, which includes a welding speed that ranged from 200 to 800 mm/min, and a rotation speed that ranged from 500 to 1300 rpm. In the stir zone of sound welds, a remarkably refined microstructure with the average grain size of 6.9 μm can be obtained by decreasing the rotation speed to 1000rpm. However, the grain size becomes larger than the base metal when the rotation speed is higher than 1300rpm. The stir zone may contain a structure composed of a high density dislocation cell of large developed annealing twin. The joints welded at a rotation speed less than 1300 rpm fractured in the base metal. However, the joints welded at a rotation speed higher than 1300 rpm fractured in the stir zone. The mechanism of the mechanical property changes in the Cu welds was proposed and clarified from the viewpoint of microstructural evolution.
Publisher
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
Source Title
Transactions of JWRI
Volume (Issue)
41(1)
Page
53-58
Date of Issued
2012-06
Language
English
Handle URL
https://hdl.handle.net/11094/23160
DOI
https://doi.org/10.18910/23160
PISSN
03874508
NCID
AA00867058
Access Rights
open access
oaire:version
Version of Record
Category
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.41 No.1 (2012-06)