J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (7): 1110-1118.DOI: 10.1016/j.jmst.2017.12.005
• Orginal Article • Previous Articles Next Articles
N. Tahreena, D.F. Zhangbc, F.S. Panbcd, X.Q. Jiangde, D.Y. Lif, D.L. Chena()
Received:
2017-10-05
Revised:
2017-11-29
Accepted:
2017-11-30
Online:
2018-07-10
Published:
2018-07-22
N. Tahreen, D.F. Zhang, F.S. Pan, X.Q. Jiang, D.Y. Li, D.L. Chen. Strengthening mechanisms in magnesium alloys containing ternary I, W and LPSO phases[J]. J. Mater. Sci. Technol., 2018, 34(7): 1110-1118.
Alloys | Points | Calculated phases | Suggested phases based on the literaturea |
---|---|---|---|
ZM31+0.3Y | A | Mg2.8YZn6 | I-phase |
ZM31+3.2Y | B | Mg2.88Zn2.95Y2 | W-phase |
ZM31+6Y | C | Mg12YZn | LPSO phase |
Table 1 Main ternary phases in the as-extruded Mg-Zn-Y samples containing different amounts of Y, identified by EDS analyses.
Alloys | Points | Calculated phases | Suggested phases based on the literaturea |
---|---|---|---|
ZM31+0.3Y | A | Mg2.8YZn6 | I-phase |
ZM31+3.2Y | B | Mg2.88Zn2.95Y2 | W-phase |
ZM31+6Y | C | Mg12YZn | LPSO phase |
Fig. 3. (a) XRD patterns showing the major phases present in the as-extruded alloys ZM31+3.2Y and ZM31+6Y. (b) The XRD patterns obtained at diffraction angles in a range of 30-40°.
Fig. 4. The diffraction patterns of selected peaks at different temperatures obtained during cycle for alloys (a) ZM31+3.2Y (#2 as marked in Fig. 3(b)), and (b) ZM31+6Y (#1 as marked in Fig. 3(b)).
Fig. 8. Comparative bar chart of the estimated overall yield strength using different summation methods and experimentally determined compressive yield strength.
Fig. 9. Comparative bar chart of the predicted yield strength improvement from various strengthening mechanisms due to different amounts of Y addition (or the presence of different ternary phases).
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