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Serrated flow in NaI:Tl scintillator crystals
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作者 Jamieson Brechtl Xie Xie +4 位作者 Rui Feng Gongyao Wang charles melcher Mariya Zhuravleva Peter K.Liaw 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第22期120-127,共8页
The serrated-flow behavior is an important phenomenon that unveils material-deformation mechanisms,as reported for various kinds of materials.NaI doped with Tl(NaI:Tl)is unique among scintillation ma-terials in that t... The serrated-flow behavior is an important phenomenon that unveils material-deformation mechanisms,as reported for various kinds of materials.NaI doped with Tl(NaI:Tl)is unique among scintillation ma-terials in that the structure contains glide planes that are linked to serration behavior.In the present work,single crystals of NaI:Tl were subjected to room-temperature compression experiments at different strain rates.The serrated flow was observed,and complexity and multifractal analyses were performed to analyze the serration behavior.The findings revealed that the strain rate had a pronounced effect on the complexity and multifractality of the serrated flow,similar to what has been found in other alloy systems.The results also indicate that there may be a strong link between the complexity of the serrated flow behavior and the heterogeneity of the underlying dynamics.It is expected that the present work could be a step toward a better understanding of the deformation behavior and forgeability of NaI:Tl single crystals. 展开更多
关键词 Dislocations Ceramic material Mechanical testing Numerical algorithms Scintillator
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