Effect of cooling rate on transformation temperature measurements of Ti50Ni50 alloy by differential scanning calorimetry and dynamic mechanical analysis

被引：38
作者：
Chang, S. H. [1 ]
Wu, S. K. [1 ]
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
来源：
MATERIALS CHARACTERIZATION | 2008年 / 59卷 / 08期
关键词：
shape memory alloy; martensitic transformation; differential scanning calorimetry (DSC); dynamic mechanical analysis (DMA); cooling rate effect;
D O I：
10.1016/j.matchar.2007.08.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
artensitic transformation temperatures of a Ti50Ni50 shape memory alloy measured by both differential scanning calorimetry and dynamic mechanical analysis decrease with increased cooling rate. The transformation temperature determined by differential scanning calorimetry, with greater mass, increases more rapidly at slower cooling rates but this specimen size effect becomes negligible when the cooling rate is close to zero. The cooling rate effect is more significant with dynamic mechanical analysis than with differential scanning calorimetry due to the larger specimen/furnace sizes used for the former, which results in a greater temperature gradient. (C) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：987 / 990
页数：4
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