作者
Scott Whalen, N Overman, V Joshi, Tamas Varga, D Graff, C Lavender
发表日期
2019/5/7
期刊
Materials Science and Engineering: A
卷号
755
页码范围
278-288
出版商
Elsevier
简介
ZK60 Magnesium tubing has been friction extruded from as-cast billets and T5 conditioned bars using Shear Assisted Processing and Extrusion (ShAPE). Tubes having an outer diameter of 50.8 mm and wall thickness of 1.9 mm were extruded with >20 times less ram force compared to conventional extrusion due to the unique shearing conditions and tooling inherent to ShAPE. Microstructures of the as-cast billet and T5 bar feedstock materials were significantly different from each other in terms of grain size, texture, and second phase distribution; yet the resulting microstructures after ShAPE were remarkably similar. An average grain size of 4–5 μm, 20° tilt of basal texture away from the extrusion axis, and refined second phases having a uniform distribution were achieved independent of the feedstock material. Hardness for as-extruded and artificially aged tubes are presented with isotropic behavior explained by …
引用总数
201920202021202220232024141819162
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S Whalen, N Overman, V Joshi, T Varga, D Graff… - Materials Science and Engineering: A, 2019