Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (11): 1309-1319.DOI: 10.1007/s40195-019-00901-7
Special Issue: 2019年镁合金专辑
• Orginal Article • Next Articles
Huseyin Zengin1(), Yunus Turen1, Muhammet Emre Turan1, Fatih Ayd?n1
Received:
2019-02-06
Revised:
2019-03-15
Online:
2019-11-10
Published:
2019-11-10
Huseyin Zengin, Yunus Turen, Muhammet Emre Turan, Fatih Ayd?n. Evolution of Microstructure, Residual Stress, and Tensile Properties of Mg-Zn-Y-La-Zr Magnesium Alloy Processed by Extrusion[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(11): 1309-1319.
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Alloy | Zn | Zr | La | Y | Mg |
---|---|---|---|---|---|
ZK60-1La-2Y | 6.12 | 0.57 | 1.05 | 2.10 | Bal. |
Table 1 Chemical composition of the fabricated alloy
Alloy | Zn | Zr | La | Y | Mg |
---|---|---|---|---|---|
ZK60-1La-2Y | 6.12 | 0.57 | 1.05 | 2.10 | Bal. |
Fig. 2 Optical and SEM micrographs of ZK60-1La-2Y alloy: a, c as-cast, b, d as-homogenized, e corresponding EDX results of the points indicated in c, d
Fig. 5 (0002), (10\(\bar{1}\)0) and (11\(\bar{2}\)0) pole figures of the ZK60-1La-2Y alloy: a as-homogenized, b extruded at 300 °C, c extruded at 400 °C
Condition | Residual stress (MPa) | |
---|---|---|
XRD method | Cutting method | |
As-homogenized | -?13?±?8 | -?9?±?2 |
As-extruded (300 °C) | -?34?±?11 | -?71?±?10 |
As-extruded (400 °C) | -?26?±?8 | -?37?±?6 |
Table 2 Residual stress measurement results of the samples
Condition | Residual stress (MPa) | |
---|---|---|
XRD method | Cutting method | |
As-homogenized | -?13?±?8 | -?9?±?2 |
As-extruded (300 °C) | -?34?±?11 | -?71?±?10 |
As-extruded (400 °C) | -?26?±?8 | -?37?±?6 |
Condition | Hardness (HV) | Ultimate tensile strength (MPa) | Yield strength (MPa) | Elongation (%) | Work-hardening response, σUTS?-?σYS (MPa) |
---|---|---|---|---|---|
As-homogenized | 70?±?2 | 202?±?3 | 170?±?3 | 3?±?1 | 32 |
As-extruded (300 °C) | 77?±?1 | 371?±?4 | 353?±?3 | 6?±?1 | 18 |
As-extruded (400 °C) | 73?±?2 | 354?±?3 | 317?±?2 | 12?±?2 | 37 |
Table 3 Microstructure and tensile properties of the as-cast, as-homogenized and as-extruded ZK60-1La-2Y alloys
Condition | Hardness (HV) | Ultimate tensile strength (MPa) | Yield strength (MPa) | Elongation (%) | Work-hardening response, σUTS?-?σYS (MPa) |
---|---|---|---|---|---|
As-homogenized | 70?±?2 | 202?±?3 | 170?±?3 | 3?±?1 | 32 |
As-extruded (300 °C) | 77?±?1 | 371?±?4 | 353?±?3 | 6?±?1 | 18 |
As-extruded (400 °C) | 73?±?2 | 354?±?3 | 317?±?2 | 12?±?2 | 37 |
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