Effects of Solute Fe, Zn and Mg on Recrystallization in Aluminum
Effects of Solute Fe, Zn and Mg on Recrystallization in Aluminum
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DOI：
10.2320/matertrans.mbw201515
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发表时间：
2016-03
影响因子：
1.2
通讯作者：
K. Wada;K. Takeshima;T. Uesugi;Y. Takigawa;K. Higashi
中科院分区：
文献类型：
--
作者：
K. Wada;K. Takeshima;T. Uesugi;Y. Takigawa;K. Higashi
研究了溶质元素Fe、Zn、Mg对Al再结晶的抑制作用。材料为Al-22.2原子ppm（at ppm）Fe、Al-53.6原子ppm Fe、Al-0.1原子% Mg、Al-1.1原子% Mg、Al-0.1原子% Zn和Al-3.0原子% Zn。所有这些都是使用高纯度的起始材料合成的。除附加元素之外的杂质的量小于几ppm。测量了不同温度下等温退火处理后维氏硬度随退火时间的变化。等温退火处理的结果进行了讨论的约翰逊Mehl Avrami Kolmogorov（JMAK）方程。每浓度单位的再结晶抑制的效果是最高的Fe，镁，锌最少。再结晶的表观活化能的值计算为：对于Al-22.2 at ppm Fe、Al-53.6 at ppm Fe、Al-0.1 at% Mg、Al-1.1 at % Mg、Al-0.1 at% Zn和Al-3.0 at% Zn，分别为139、146、63、66、47.7和67 kJ/mol。在相同合金系中，再结晶表观激活能与晶界扩散激活能接近。[doi：10.2320/matertrans.MBW201515]
In this work, the effects of solute Fe, Zn, and Mg on the suppression of recrystallization in Al are studied. The materials are Al-22.2 atomic parts per million (at ppm) Fe, Al-53.6 at ppm Fe, Al-0.1 at% Mg, Al-1.1 at% Mg, Al-0.1 at% Zn, and Al-3.0 at% Zn. All were synthesized using high-purity starting materials. The amount of impurities other than the additional elements is less than a few ppm. The variation in the Vickers hardness with annealing time after isothermal annealing treatments at various temperatures is measured. The results of the isothermal annealing treatments are discussed in terms of the JohnsonMehlAvramiKolmogorov (JMAK) equation. The effect of the suppression of recrystallization per concentration unit is highest for Fe, less so for Mg, and least for Zn. The values of the apparent activation energy for recrystallization are calculated as: 139, 146, 63, 66, 47.7, and 67 kJ/mol for Al-22.2 at ppm Fe, Al-53.6 at ppm Fe, Al-0.1 at% Mg, Al-1.1 at% Mg, Al-0.1 at% Zn, and Al-3.0 at% Zn, respectively. The values of the apparent activation energy for recrystallization are close to the values of the activation energy for grain boundary diffusion in the same alloy systems. [doi:10.2320/matertrans.MBW201515]