Grain growth and grain size effects on the thermal expansion properties of an electrodeposited Fe-Ni invar alloy
Grain growth and grain size effects on the thermal expansion properties of an electrodeposited Fe-Ni invar alloy
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DOI：
10.1016/j.scriptamat.2010.04.006
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发表时间：
2010-08-01
影响因子：
6
通讯作者：
Hu, Wenbin
中科院分区：
文献类型：
--
作者：
Liu, Yichun;Liu, Lei;Hu, Wenbin
研究了电沉积Fe-Ni合金的晶粒生长和晶粒尺寸对其热膨胀行为的影响。结果表明，通过晶粒尺寸控制，可以在3.1 ~ 7.8 × 10(-6) K-1范围内对同一合金实现不同的热膨胀系数。在invar合金中，晶界和晶间的热膨胀差异扩大。纳米晶样品在623 K时表现出中等的热稳定性，然后晶粒突然长大，体积收缩。(C) 2010材料学报Elsevier Ltd.出版。版权所有。
The effects of grain growth and size on the thermal expansion behavior of an electrodeposited Fe-Ni invar alloy have been studied. The results showed a method of achieving different thermal expansion coefficients over a wide range of 3.1-7.8 x 10(-6) K-1 for the same alloy through grain size control. The thermal expansion difference between grain boundaries and crystallites was enlarged in the invar alloy. The nanocrystalline samples exhibited moderate thermal stability up to 623 K and then abrupt grain growth, with a contraction in volume. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.