Journal
MATERIALS LETTERS
Volume 242, Issue -, Pages 87-90Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.01.089
Keywords
Metals and alloys; Long period stacking ordered phase; Equal channel angular pressing; Microstructure; Mechanical property
Funding
- National Natural Science Foundation of China [51301151]
- Jiangsu Province Natural Science Foundation of China [BK20130447, BK20160869]
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A 0.31 mm-diameter Mg97Y2Zn1 alloy wire with high yield strength of 550 MPa, ultimate tensile strength of 570 MPa and elongation of 12% was successfully prepared via the combination of ECAP and heavy drawing at elevated temperatures. Microstructure observation showed that the 18R phases were broken into fine particles and formed clusters during drawing of ECAP rod. The alpha-Mg matrix was refined via dynamic recrystallization, and the DRX grains were mixed with dynamically precipitated 14H particles. The ultra-fined microstructure, as well as the homogenous distribution of LPSO particles and clusters, contributed to the exceptional mechanical properties of Mg97Y2Zn1 alloy wire. (C) 2019 Elsevier B.V. All rights reserved.
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