2024-03-29T05:49:01Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00008530
2022-12-13T02:25:02Z
1:87
Joint properties of friction welded joint between pure magnesium and pure aluminium with post-weld heat treatment
Kimura, M.
Fuji, A.
Shibata, S.
open access
Magnesium
Aluminium
Friction welding
Post-weld heat treatment
Interlayer
Thermal stress
Fracture
The present paper described the investigation of the joint properties of friction welded joint between pure magnesium (CP-Mg) and pure aluminium (CP-Al) with post-weld heat treatment (PWHT). The joint in as-welded condition fractured from the adjacent region of the weld interface, although that had the same strength as the tensile strength of the CP-Al base metal. This joint had the intermediate layer (interlayer) consisting of intermetallic compound (IMC) on the weld interface, and its thickness was below approximately 1 μm. Most of joints subjected to PWHT autogenously fractured at IMC interlayer and that mainly occurred between Mg2Al3 and Mg17Al12 although those layers had a little each other at the fractured surfaces. The IMC interlayer grew to CP-Mg and CP-Al sides, and its thickness increased with increasing heating temperature and/or heating time. The main reasons for the autogenous fracture from the adjacent region of the weld interface of the joint were considered the growth of IMC interlayer of the joint during PWHT process. Furthermore, that fracture of the joint was thought the generating of the thermal stresses in the radial and/or circumferential directions during the cooling stage of PWHT process.
2015
eng
journal article
AM
https://kitami-it.repo.nii.ac.jp/records/8530
https://doi.org/10.1016/j.matdes.2015.06.175
Materials & Design
85
169
179
https://kitami-it.repo.nii.ac.jp/record/8530/files/2015.11_追加_JMAD.pdf
application/pdf
2.3 MB
2017-07-14