Temperature dependent mechanical properties of ultra-fine grained FeCo-2V

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	Temperature dependent mechanical properties of ultra-fine grained FeCo-2V
	A. Duckham; D. Z. Zhang; D. Liang; V. Luzin; R. C. Cammarata; R. L. Leheny; C. L. Chien; T. P. Weihs
	2003
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	51 期号:14 页码:4083-4093
摘要	The tensile properties of ultra-fine grained ordered FeCo-2V have been investigated as a function of testing temperature. Samples with grain sizes of 100, 150 and 290 nm have been tested at temperatures ranging from 25 to 500 degreesC. Extremely high yield strengths (up to 2.1 GPa) were measured at room temperature with appreciable ductility of between 3 and 13%. These strengths were found to decline only gradually as the testing temperature was increased to 400 degreesC, while ductility was generally enhanced, up to 22%. The high strengths are attributed to grain boundary strengthening that is particularly effective due to ordering. Measured ductility was dependent on the relative values of yield strength, fracture strength and work hardening rate. Discontinuous yielding and appreciable Luders strain (3-6%) were observed and were dependent on the initial structure and on the testing temperature. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
部门归属	johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa. chinese acad sci, inst met res, shenyang 110016, peoples r china. johns hopkins univ, dept phys & astron, baltimore, md 21218 usa. natl inst stand & technol, ctr neutron res, gaithersburg, md 20899 usa. suny stony brook, ctr thermal spray res, dept mat sci & engn, stony brook, ny 11794 usa.;duckham, a (reprint author), johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa
关键词	Annealing High Temperature Tension Testing Severe Plastic Deformation Ultra-fine Grained Microstructure Yield Phenomena Alloys Deformation Ductility Strength Size
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WOS记录号	WOS:000184761600009
引用统计	被引频次：61[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/321006/35823
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	A. Duckham,D. Z. Zhang,D. Liang,et al. Temperature dependent mechanical properties of ultra-fine grained FeCo-2V[J]. Acta Materialia,2003,51(14):4083-4093.
APA	A. Duckham.,D. Z. Zhang.,D. Liang.,V. Luzin.,R. C. Cammarata.,...&T. P. Weihs.(2003).Temperature dependent mechanical properties of ultra-fine grained FeCo-2V.Acta Materialia,51(14),4083-4093.
MLA	A. Duckham,et al."Temperature dependent mechanical properties of ultra-fine grained FeCo-2V".Acta Materialia 51.14(2003):4083-4093.