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Temperature and Texture Development during High Speed Friction Stir Processing of Magnesium AZ31
Author(s) -
Hütsch Leon Leander,
Hilgert Jakob,
Herzberg Klaas,
dosSantos Jorge,
Huber Norbert
Publication year - 2012
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201200112
Subject(s) - materials science , microstructure , distortion (music) , texture (cosmology) , metallurgy , magnesium , grain size , friction stir processing , welding , thermal , atmospheric temperature range , composite material , thermodynamics , image (mathematics) , computer science , optoelectronics , cmos , artificial intelligence , amplifier , physics
The increasing demand for low weight structural materials yields a growing interest in Mg alloys processed at industrially interesting speeds. One aim of this study is to develop defect free welds in the velocity range of 1–10 m · min −1 . The resulting welds are subjected to temperature, microstructure and texture investigations. Energy input as well as temperature development under the tool are predicted using numerical models. Image correlation is used to evaluate distortion. The results show that while ensuring constant weld quality, the energy input, sample distortion and grain size can be decreased reaching a threshold at 5 m · min −1 . Thermal analysis reveal an asymmetry between AS and RS. The basal planes exhibits a shift from 0 to 45° into processing direction.