期刊
MATERIALS LETTERS
卷 143, 期 -, 页码 167-171出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.12.107
关键词
Severe plastic deformation; Thin-walled tube; AZ31; Microstructure; Grain boundaries; Nanocrystalline materials
资金
- Ministry of Higher Education, Malaysia [HIR-MOHE-16001-00-D000001]
- Iran National Science Foundation (INSF)
A novel severe plastic deformation (SPD) process entitled combined parallel tubular channel angular pressing (PTCAP) and tube backward extrusion (TBE) is proposed for producing thin-walled ultrafine-grained (UFG) tubes. In this new combined SPD approach, the PTCAP and TBE processes are consequently applied to the tube material in which a severe plastic strain is applied to produce a UFG thin-walled tube. This technique was performed on an AZ31 magnesium tube, and a remarkable grain refinement was achieved. The results showed that this method could easily produce a high strength thin walled tube. The microhardness increased significantly to 70 HV after the process from an initial value of 38 HV. (C) 2014 Elsevier B.V. All rights reserved.
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