Process characteristics of constrained friction processing of AM50 magnesium alloy

Process characteristics of constrained friction processing of AM50 magnesium alloy

DE CASTRO Camila C., SHEN Junjun, DOS SANTOS Jorge F., KLUSEMANN Benjamin

Abstract. Constrained Friction Processing (CFP) is a novel solid-state technique suitable to produce rods especially from lightweight materials. The technology is particularly interesting to overcome the processing challenges associated with Mg due to its hexagonal close-packed (hcp) structure. The process is a variation of the refill friction stir spot welding (refill FSSW) technique, and is performed by plunging the rotating shoulder into the base material, which causes the material to be extruded into the cavity crated by the retraction of the rotating probe and, at the same time, being constrained by it. The complex shear and the heat generated during the process causes metallurgical transformations in the material, such as dynamic recrystallization, allowing for substantial grain refinement to micro- or even submicro- scale. In this study, real time data – torque, axial force and temperature – acquired from the process are analyzed in order to present, for the first time, a description of the CFP technique. Furthermore, the resultant features of the microstructure of a refined rod is explored.

Keywords
Constrained Friction Processing, Solid-State Processing, Mg Alloy, Fine Grains

Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: DE CASTRO Camila C., SHEN Junjun, DOS SANTOS Jorge F., KLUSEMANN Benjamin, Process characteristics of constrained friction processing of AM50 magnesium alloy, Materials Research Proceedings, Vol. 28, pp 1739-1746, 2023

DOI: https://doi.org/10.21741/9781644902479-188

The article was published as article 188 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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