DSC and HRTEM investigation of the precipitates in Al-1.0%Mg2Si-0.5%Ag alloy

被引：29
作者：
Gaber, A
Matsuda, K
Ali, AM
Zou, Y
Ikeno, S
机构：
[1] Toyama Univ, Venture Business Lab, Toyama 9308555, Japan
[2] Toyama Univ, Fac Engn, Toyama 9308555, Japan
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2004年 / 20卷 / 12期
关键词：
aluminium alloys; Al-Mg-Si; precipitation; silver alloying;
D O I：
10.1179/026708304X6086
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The understanding and control of nanoscale precipitation in an Al-1.0 wt-%Mg2Si-0.5wt-% Ag alloy during artificial aging is critical for achieving optimum mechanical properties. To achieve this objective, both differential scanning calorimetry (DSC) and high resolution transmission electron microscopy (HRTEM) have been utilised. The non-isothermal DSC thermograms exhibited eight reaction peaks; six are exothermic (precipitation) and two are endothermic (dissolution) reactions. The activation energies associated with the individual precipitates are determined. With the aid of HRTEM, the evolved precipitates have been characterised.
引用
收藏
页码：1627 / 1631
页数：5
相关论文
共 26 条
[21]   ISOTHERMAL DSC METHOD FOR EVALUATION OF THE KINETICS OF CRYSTALLIZATION IN THE GE-SB-S GLASSY SYSTEM [J].
RYSAVA, N ;
SPASOV, T ;
TICHY, L .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 1987, 32 (04) :1015-1021
[22]   The determination of activation energy from linear heating rate experiments: a comparison of the accuracy of isoconversion methods [J].
Starink, MJ .
THERMOCHIMICA ACTA, 2003, 404 (1-2) :163-176
[23]   β′ and βprecipitation in an Al-Mg alloy studied by DSC and TEM [J].
Starink, MJ ;
Zahra, AM .
ACTA MATERIALIA, 1998, 46 (10) :3381-3397
[24]  
Starink MJ, 1998, PHILOS MAG A, V77, P187, DOI 10.1080/01418619808214237
[25]  
Takhor R.L., 1972, ADV NUCLEATION CRYST, P166
[26]   DSC analyses of the precipitation behavior of two Al-Mg-Si alloys naturally aged for different times [J].
Zhen, L ;
Kang, SB .
MATERIALS LETTERS, 1998, 37 (06) :349-353
123