Abstract
The metastable-phase precipitates which appear at the peak condition of hardness in an Al-0.83 at%Mg-0.4 at%Si alloy were investigated, using a combination of Vickers microhardness tests, DSC calorimetry, and field-emission STEM observations with EDX analyses. EDX and elemental mapping revealed that both Si-rich and Mg-Si precipitates with needle-shapes were present. EDX analysis showed that needle-shaped β″precipitates protruding from the specimen foils were composed mainly of Si. The present results on structures, compositions and thermal stabilities of the precipitates suggest that Si-rich precipitates co-exist with complex Mg-Si precipitates also of needle-shape.
| Original language | English |
|---|---|
| Pages (from-to) | 241-245 |
| Number of pages | 5 |
| Journal | Journal of Alloys and Compounds |
| Volume | 509 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 12 2011 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
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The compositions of metastable phase precipitates observed at peak hardness condition in an Al-Mg-Si alloy. / Son, S. K.; Matsumura, S.; Fukui, K.; Takeda, M.
In: Journal of Alloys and Compounds, Vol. 509, No. 2, 12.01.2011, p. 241-245.Research output: Contribution to journal › Article
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TY - JOUR
T1 - The compositions of metastable phase precipitates observed at peak hardness condition in an Al-Mg-Si alloy
AU - Son, S. K.
AU - Matsumura, S.
AU - Fukui, K.
AU - Takeda, M.
PY - 2011/1/12
Y1 - 2011/1/12
N2 - The metastable-phase precipitates which appear at the peak condition of hardness in an Al-0.83 at%Mg-0.4 at%Si alloy were investigated, using a combination of Vickers microhardness tests, DSC calorimetry, and field-emission STEM observations with EDX analyses. EDX and elemental mapping revealed that both Si-rich and Mg-Si precipitates with needle-shapes were present. EDX analysis showed that needle-shaped β″precipitates protruding from the specimen foils were composed mainly of Si. The present results on structures, compositions and thermal stabilities of the precipitates suggest that Si-rich precipitates co-exist with complex Mg-Si precipitates also of needle-shape.
AB - The metastable-phase precipitates which appear at the peak condition of hardness in an Al-0.83 at%Mg-0.4 at%Si alloy were investigated, using a combination of Vickers microhardness tests, DSC calorimetry, and field-emission STEM observations with EDX analyses. EDX and elemental mapping revealed that both Si-rich and Mg-Si precipitates with needle-shapes were present. EDX analysis showed that needle-shaped β″precipitates protruding from the specimen foils were composed mainly of Si. The present results on structures, compositions and thermal stabilities of the precipitates suggest that Si-rich precipitates co-exist with complex Mg-Si precipitates also of needle-shape.
UR - http://www.scopus.com/inward/record.url?scp=78149283781&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78149283781&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2010.08.151
DO - 10.1016/j.jallcom.2010.08.151
M3 - Article
AN - SCOPUS:78149283781
VL - 509
SP - 241
EP - 245
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 2
ER -