Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
829978 | Materials & Design (1980-2015) | 2013 | 10 Pages |
Abstract
A homogenized Mg-10Gd-4.8Y-0.6Zr (wt.%) alloy was subjected to multidirectional forging (MDF) at 773 K. It was shown that the average grain size decreased with increasing cumulative strain till 6 passes. Uniform fine-grained structure with an average grain size of 9.3 μm was achieved after 6 passes, i.e., cumulative strain of 1.8. Results revealed that grain refinement was induced by a complicated combination of discontinuous dynamic recrystallization at low strain regions and continuous dynamic recrystallization or rotation recrystallization at medium-to-high strain regions. The alloy multi-directionally forged (MDFed) for 6 passes exhibited an excellent balance of strength and ductility at room temperature with ultimate tensile strength (UTS) of 336 MPa and elongation to fracture of 21.0%.
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Authors
Liechong Tang, Chuming Liu, Zhiyong Chen, Dawei Ji, Hongchao Xiao,