Shear Assisted Processing and Extrusion (ShAPE™) of AZ91E Flake: A Study of Tooling Features and Processing Effects

Darsell, Jens T.; Overman, Nicole R.; Joshi, Vineet V.; Whalen, Scott A.; Mathaudhu, Suveen N.

doi:10.1007/s11665-018-3509-1

Shear Assisted Processing and Extrusion (ShAPE™) of AZ91E Flake: A Study of Tooling Features and Processing Effects

Journal Article · Tue Jul 10 04:00:00 EDT 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/s11665-018-3509-1· OSTI ID:1477444

Darsell, Jens T.; Overman, Nicole R.; Joshi, Vineet V.; Whalen, Scott A.; Mathaudhu, Suveen N.

Charges of melt spun AZ91E flake were indirectly extruded into tubes using shear assisted processing and extrusion (ShAPE). The effect of instrument parameters and tool features on densification and microstructural evolution was studied. At a constant extrusion ratio, the tool rotational velocity was varied from 75 to 300 rpm, and was demonstrated to reduce the forge force by a factor of four. Modification of the extrusion die face with successively more aggressive scrolled features was found to enhance material flow into the extrusion orifice which led to a 30% reduction in spindle torque. Microstructure, texture and hardness are reported for the range of rpm and scroll geometries investigated. It was observed that the ShAPE process is able to retain the average grain size of the as-spun flake (2.5-4 µm) while simultaneously imparting strong textural alignment in the resultant tube.

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1477444

Report Number(s):: PNNL-SA-129883

Journal Information:: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 8 Vol. 27; ISSN 1059-9495

Publisher:: Springer

Country of Publication:: United States

Language:: English

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