期刊
SCRIPTA MATERIALIA
卷 63, 期 4, 页码 359-362出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.04.006
关键词
Electroplating; Nanocrystalline materials; Thermal expansion; Grain growth
类别
资金
- Science and Technology Talents project of Shanghai [10QA1403400]
- Morningstar Young Scholars Award Scheme [T241460615]
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.
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