Thermal stability of a nanostructured aluminium alloy
Thermal stability of a nanostructured aluminium alloy
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DOI：
10.1016/j.matchar.2005.08.005
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发表时间：
2005-11-01
影响因子：
4.7
通讯作者：
Kurzydlowski, KJ
中科院分区：
文献类型：
--
作者：
Lewandowska, M;Kurzydlowski, KJ
通过测量晶粒的大小和形状，定量地评价了静压挤压纳米铝合金在退火过程中发生的显微组织变化。结果表明，在300℃的退火温度下，晶粒尺寸是稳定的，在此温度范围内，晶粒内部的位错湮灭是晶粒组织演化的主要过程。在较高的退火温度下，恢复的晶粒开始长大，微观结构在晶粒尺寸方面变得更加均匀。讨论了提高合金热稳定性的可能性。(c) 2005爱思唯尔公司版权所有。
The microstructural changes taking place in a hydrostatically extrusion-processed nanostructured aluminium alloy during annealing were evaluated quantitatively, by measuring the size and shape of the grains. It was found that the grain size is stable LIP to an annealing temperature of 300 degrees C. Within this temperature range, the microstructural evolution proceeds through the annihilation of dislocations in the interior of the grains. At higher annealing temperatures, the recovered grains begin to grow and the microstructure becomes more homogeneous in terms of the grain size. The possibilities of an improvement of alloy thermal stability are discussed. (c) 2005 Elsevier Inc. All rights reserved.