On pseudoelasticity in single crystals of the intermetallic compound Fe3Al
On pseudoelasticity in single crystals of the intermetallic compound Fe3Al
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金属间化合物 Fe3Al 单晶的赝弹性
DOI：
10.1016/s1359-6462(97)00160-7
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发表时间：
1997
影响因子：
6
通讯作者：
H. Neuhäuser
中科院分区：
文献类型：
--
作者：
A. Brinck;C. Engelke;H. Neuhäuser
关于Fe{sub 3}Al金属间化合物中的伪弹性效应的文献报道很少。Guedou和Rieu在剪切和压缩实验中观察到{l_brace}110{r_brace}和{l_brace}112{r_brace}面上的可逆变形，并用微孪晶解释，而Kubin等人通过原位TEM观察表明，超位错的前部部分的运动似乎导致{l_brace}110{r_brace}面上的滑移反转。作者最近观察到这样一个类似的效果在原位滑移线形成的Fe{sub 3}Al晶体具有特殊的晶体取向在压缩变形在室温及以上的研究。下面将描述这些观察结果，并结合文献数据讨论可能的原因。
Only few notes can be found in literature which report on pseudoelastic effects in Fe{sub 3}Al intermetallic compounds. Reversible deformation on {l_brace}110{r_brace} and {l_brace}112{r_brace} planes was observed in shear and compression experiments by Guedou and Rieu and explained by microtwinning, while Kubin et al. showed by in-situ TEM observations that the motion of the front partial of a superdislocation appeared to cause the slip reversal on {l_brace}110{r_brace} planes. The authors have recently observed such a similar effect during in-situ slip line formation studies of Fe{sub 3}Al crystals with a special crystal orientation deformed in compression at and above room temperature. In the following these observations are described and the possible reasons are discussed in connection with the data from literature.