Precipitation Kinetics of an Al-15% Mg Alloy Studied by Microcalorimetry and TEM
Precipitation Kinetics of an Al-15% Mg Alloy Studied by Microcalorimetry and TEM
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DOI：
10.4028/www.scientific.net/msf.217-222.795
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发表时间：
1996-05
期刊：
影响因子：
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通讯作者：
M. Starink;A. Zahra
中科院分区：
文献类型：
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作者：
M. Starink;A. Zahra
通过微量热法和透射电子显微镜（TEM）研究了过饱和Al-15mass%Mg固溶体形成β素的动力学。结果表明，该变换不能用常用的方程：d alfa / dt = f(alfa) k(T) 来描述。函数f(alfa)在不同温度下是不同的。表观活化能随着从 1.07 eV 转变到 0.7 eV 的量而降低。这些发现是根据β素成核和生长过程的重叠进行讨论的。
The kinetics of beta prime formation from supersaturated Al-15mass%Mg solid solutions was studied by micro-calorimetry and transmission electron microscopy (TEM). It is shown that the transformation can not be described by the commonly used equation: d alfa / dt = f(alfa) k(T). The function f(alfa) is different at different temperatures. Apparent activation energies decrease with amount transformed from 1.07 eV to 0.7 eV. These findings are discussed in terms of overlapping of the nucleation and growth processes for beta prime.