Influence of phase transition on shock-induced spallation in nanocrystalline iron

被引：33
|
作者：
Gunkelmann, Nina [1 ,2 ]
Bringa, Eduardo M. [3 ,4 ]
Urbassek, Herbert M. [1 ,2 ]
机构：
[1] Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany
[2] Univ Kaiserslautern, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany
[3] Univ Nacl Cuyo, CONICET, RA-5500 Mendoza, Argentina
[4] Univ Nacl Cuyo, Fac Ciencias Exactas & Nat, RA-5500 Mendoza, Argentina
来源：
JOURNAL OF APPLIED PHYSICS | 2015年 / 118卷 / 18期
关键词：
All Open Access; Green;
D O I：
10.1063/1.4935452
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Intense shock waves may lead to spallation of the sample. Recent experiments show differences of shock spallation in iron depending on whether the samples underwent the pressure-induced bcchcp phase transformation or not. In this study, we perform molecular dynamics simulations of shock-induced spallation in polycrystalline iron. Our results show that the phase transformation decreases the probability of multiple spallation and crack formation. In agreement with experiments, the phase transformation changes the surface morphology showing smoother spallation surfaces. (C) 2015 AIP Publishing LLC.
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页数：6
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