Effects of welding conditions on microstructural transformations and mechanical properties in AE42-HP friction welded joints
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In: Welding in the World, Vol. 52, No. 11-12, 01.11.2008, p. 10-17.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Effects of welding conditions on microstructural transformations and mechanical properties in AE42-HP friction welded joints
AU - Pinheiro, G. A.
AU - Pankiewicz, C. G.
AU - Hort, N.
AU - Dos Santos, J. F.
AU - Kainer, K. U.
PY - 2008/11/1
Y1 - 2008/11/1
N2 - In the present work, rotational friction welding of an aluminium rare-earth based high creep-resistance magnesium (Mg) alloy AE42-HP was investigated, using the continuous drive method. Analyses of the welding parameters and their influence on the joint formation as well as temperature measurements were carried out within this context. In addition, metallurgical characterization using light and scanning electron microscopes (SEM) with additional grain size measurements were performed, to obtain a better understanding of the mechanisms involved on the joint formation. Tensile tests were also performed to mechanically evaluate friction welding as an alternative for joining high creep-resistance Mg alloys. Preliminary results showed a good reproducibility and reliability of the friction welding system. Moreover, it was proved that the process can produce sound welds characterized by the formation of a refined dynamically recrystallized microstructure with a complete rupture of the typical "as cast" base material (BM) lamellae microstructure along the recrystallized zone. Average grain size varies from 4.8 to 11.1 μm within the recrystallized zone, which generated joints with tensile strengths comparable to those of the BM.
AB - In the present work, rotational friction welding of an aluminium rare-earth based high creep-resistance magnesium (Mg) alloy AE42-HP was investigated, using the continuous drive method. Analyses of the welding parameters and their influence on the joint formation as well as temperature measurements were carried out within this context. In addition, metallurgical characterization using light and scanning electron microscopes (SEM) with additional grain size measurements were performed, to obtain a better understanding of the mechanisms involved on the joint formation. Tensile tests were also performed to mechanically evaluate friction welding as an alternative for joining high creep-resistance Mg alloys. Preliminary results showed a good reproducibility and reliability of the friction welding system. Moreover, it was proved that the process can produce sound welds characterized by the formation of a refined dynamically recrystallized microstructure with a complete rupture of the typical "as cast" base material (BM) lamellae microstructure along the recrystallized zone. Average grain size varies from 4.8 to 11.1 μm within the recrystallized zone, which generated joints with tensile strengths comparable to those of the BM.
KW - Friction welding
KW - Light metals
KW - Magnesium
KW - Microstructure
KW - Reference lists
KW - Transformation
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=56849086349&partnerID=8YFLogxK
U2 - 10.1007/BF03266678
DO - 10.1007/BF03266678
M3 - Journal articles
AN - SCOPUS:56849086349
VL - 52
SP - 10
EP - 17
JO - Welding in the World
JF - Welding in the World
SN - 0043-2288
IS - 11-12
ER -