Abstract
Effect of pre-precipitation on the microstructure and mechanical properties of extruded Mg-1.1Sn-2Zn alloy (at%) has been investigated in this study. The result shows that the presence of a high density of precipitates before extrusion is very effective in obtaining a fine dynamic recrystallized grain structure. The extrusion of the alloy without precipitates results in a bimodal grain structure with fine grains: ∼5 μm-size fine grains and ∼15 μm-size coarse grains. On the contrary, the extrusion of the alloy with a high density of precipitates results in a ∼2 μm-sized, fully dynamic recrystallized grain structure exhibiting a better combination of mechanical properties. The fine precipitates sheared during extrusion act as nucleation sites for DRX and prevent grain growth because of the pinning effect. This study shows that the aging treatment before extrusion is very effective in obtaining a homogeneous and fine grain structure exhibiting a better combination of mechanical properties.
| Original language | English |
|---|---|
| Pages (from-to) | 741-745 |
| Number of pages | 5 |
| Journal | Metals and Materials International |
| Volume | 21 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2015 Jul 28 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry
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Effect of pre-precipitation on microstructure and mechanical properties of extruded Mg-Sn-Zn alloys. / Kim, Young Kyun; Cho, Tae Hee; Jeong, Seok Hoan; Kim, Won Tae; Kim, Do Hyang.
In: Metals and Materials International, Vol. 21, No. 4, 28.07.2015, p. 741-745.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of pre-precipitation on microstructure and mechanical properties of extruded Mg-Sn-Zn alloys
AU - Kim, Young Kyun
AU - Cho, Tae Hee
AU - Jeong, Seok Hoan
AU - Kim, Won Tae
AU - Kim, Do Hyang
PY - 2015/7/28
Y1 - 2015/7/28
N2 - Effect of pre-precipitation on the microstructure and mechanical properties of extruded Mg-1.1Sn-2Zn alloy (at%) has been investigated in this study. The result shows that the presence of a high density of precipitates before extrusion is very effective in obtaining a fine dynamic recrystallized grain structure. The extrusion of the alloy without precipitates results in a bimodal grain structure with fine grains: ∼5 μm-size fine grains and ∼15 μm-size coarse grains. On the contrary, the extrusion of the alloy with a high density of precipitates results in a ∼2 μm-sized, fully dynamic recrystallized grain structure exhibiting a better combination of mechanical properties. The fine precipitates sheared during extrusion act as nucleation sites for DRX and prevent grain growth because of the pinning effect. This study shows that the aging treatment before extrusion is very effective in obtaining a homogeneous and fine grain structure exhibiting a better combination of mechanical properties.
AB - Effect of pre-precipitation on the microstructure and mechanical properties of extruded Mg-1.1Sn-2Zn alloy (at%) has been investigated in this study. The result shows that the presence of a high density of precipitates before extrusion is very effective in obtaining a fine dynamic recrystallized grain structure. The extrusion of the alloy without precipitates results in a bimodal grain structure with fine grains: ∼5 μm-size fine grains and ∼15 μm-size coarse grains. On the contrary, the extrusion of the alloy with a high density of precipitates results in a ∼2 μm-sized, fully dynamic recrystallized grain structure exhibiting a better combination of mechanical properties. The fine precipitates sheared during extrusion act as nucleation sites for DRX and prevent grain growth because of the pinning effect. This study shows that the aging treatment before extrusion is very effective in obtaining a homogeneous and fine grain structure exhibiting a better combination of mechanical properties.
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U2 - 10.1007/s12540-015-5010-9
DO - 10.1007/s12540-015-5010-9
M3 - Article
VL - 21
SP - 741
EP - 745
JO - Metals and Materials International
JF - Metals and Materials International
SN - 1598-9623
IS - 4
ER -