The compositions of metastable phase precipitates observed at peak hardness condition in an Al-Mg-Si alloy

S. K. Son; S. Matsumura; K. Fukui; M. Takeda

doi:10.1016/j.jallcom.2010.08.151

The compositions of metastable phase precipitates observed at peak hardness condition in an Al-Mg-Si alloy

S. K. Son, S. Matsumura, K. Fukui, M. Takeda

Quantum Sciences of Materials

Research output: Contribution to journal › Article

20 Citations (Scopus)

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	https://doi.org/10.1016/j.jallcom.2010.08.151
Publication status	Published - Jan 12 2011

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2010.08.151

Fingerprint Dive into the research topics of 'The compositions of metastable phase precipitates observed at peak hardness condition in an Al-Mg-Si alloy'. Together they form a unique fingerprint.

Cite this

@article{0e7dced2db584cb5a3a1dbcf17c2a474,

title = "The compositions of metastable phase precipitates observed at peak hardness condition in an Al-Mg-Si alloy",

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.",

author = "Son, {S. K.} and S. Matsumura and K. Fukui and M. Takeda",

year = "2011",

month = jan,

day = "12",

doi = "10.1016/j.jallcom.2010.08.151",

language = "English",

volume = "509",

pages = "241--245",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "2",

}

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 -