Effect of shock compression method on the defect substructure in monocrystalline copper

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	Effect of shock compression method on the defect substructure in monocrystalline copper
	B. Y. Cao; D. H. Lassila; M. S. Schneider; B. K. Kad; C. X. Huang; Y. B. Xu; D. H. Kalantar; B. A. Remington; M. A. Meyers
	2005
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	409 期号:1-2 页码:270-281
摘要	Monocrystalline copper samples with orientations of [001] and [221] were shocked at pressures ranging from 20 to 60 GPa using two techniques: direct drive lasers and explosively driven flyer plates. The pulse duration for these techniques differed substantially: 40 ns for the laser experiments at 0.5 mm into the sample and 1.1 similar to 1.4 mu s for the flyer-plate experiments at 5 mm into the sample. The residual microstructures were dependent on orientation, pressure, and shocking method. The much shorter pulse duration in the laser driven shock yielded microstructures in recovery samples closer to those generated at the shock front. For the flyer-plate experiments, the longer pulse duration allows shock-generated defects to reorganize into lower energy configurations. Calculations show that the post-shock cooling for the laser driven shock is 10(3 similar to)10(4) faster than that for plate-impact shock, increasing the amount of annealing and recrystallization in recovery samples for the latter. At the higher pressure level, extensive recrystallization was observed in the plate-impact samples, while it was absent in laser driven shock. An effect that is proposed to contribute significantly to the formation of recrystallized regions is the existence of micro-shear-bands, which increase the local temperature beyond the prediction from adiabatic compression. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	univ calif san diego, mat sci & engn program, la jolla, ca 92093 usa. lawrence livermore natl lab, livermore, ca 94550 usa. chinese acad sci, shenyang natl lab mat sci, inst met, shenyang 110016, peoples r china.;meyers, ma (reprint author), univ calif san diego, mat sci & engn program, 9500 gilman dr,ucsd 0411, la jolla, ca 92093 usa;mameyers@mae.ucsd.edu
关键词	Laser Shock Compression Plate Impact Shear Localization In Copper Shock Waves Explosives Deformed Metals Stress Jets
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WOS记录号	WOS:000234033900038
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34796
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Y. Cao,D. H. Lassila,M. S. Schneider,et al. Effect of shock compression method on the defect substructure in monocrystalline copper[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2005,409(1-2):270-281.
APA	B. Y. Cao.,D. H. Lassila.,M. S. Schneider.,B. K. Kad.,C. X. Huang.,...&M. A. Meyers.(2005).Effect of shock compression method on the defect substructure in monocrystalline copper.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,409(1-2),270-281.
MLA	B. Y. Cao,et al."Effect of shock compression method on the defect substructure in monocrystalline copper".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 409.1-2(2005):270-281.