Shear localization-martensitic transformation interactions in Fe-Cr-Ni monocrystal

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	Shear localization-martensitic transformation interactions in Fe-Cr-Ni monocrystal
	M. A. Meyers; B. Y. Cao; V. F. Nesterenko; D. J. Benson; Y. B. Xu
	2004
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623
卷号	35A 期号:9 页码:2575-2586
摘要	A Fe-15 wt pet Cr-15 wt pet Ni alloy monocrystal was deformed dynamically (strain rate similar to10(4) s(-1)) by the collapse of an explosively driven thick-walled cylinder under prescribed initial temperature and strain conditions. The experiments were carried out under the following conditions: (a) alloy in austenitic state, temperature above transformation temperature; (b) alloy in transformed state; and (c) alloy at temperature slightly above g,, propitiating concurrent shear-band propagation and martensitic transformation. The alloy exhibited profuse shear-band formation, which was a sensitive function of the deformation condition. Stress-assisted and strain-induced martensitic transformation competes with shear localization. The alloy deformed at a temperature slightly above g, shows a significantly reduced number of shear bands. The anisotropy of plastic deformation determines the evolution of strains and distribution of shear bands. The different conditions showed significant differences that are interpreted in terms of the microstructural anisotropy. Calculated shear-band spacings based on the Grady-Kipp (GK) and Wright-Ockendon (WO) theories are compared with the observed values. The microstructure within the shear bands was characterized by transmission electron microscopy. Regions of sub-micron grain sizes exhibiting evidence of recrystallization were observed, as well as amorphous regions possibly resulting from melting and rapid resolidification.
部门归属	univ calif san diego, dept mech & aerosp engn, la jolla, ca 92093 usa. chinese acad sci, inst met res, shenyang 110016, peoples r china.;meyers, ma (reprint author), univ calif san diego, dept mech & aerosp engn, la jolla, ca 92093 usa;mameyers@ucsd.edu bucao@ucsd.edu
关键词	Strain-rate Deformation Ellipsoidal Inclusion Shock Consolidation Silicon-carbide Elastic Field Crystals Solids Bands
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WOS记录号	WOS:000223678000005
引用统计	被引频次：23[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/321006/35503
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. A. Meyers,B. Y. Cao,V. F. Nesterenko,et al. Shear localization-martensitic transformation interactions in Fe-Cr-Ni monocrystal[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2004,35A(9):2575-2586.
APA	M. A. Meyers,B. Y. Cao,V. F. Nesterenko,D. J. Benson,&Y. B. Xu.(2004).Shear localization-martensitic transformation interactions in Fe-Cr-Ni monocrystal.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,35A(9),2575-2586.
MLA	M. A. Meyers,et al."Shear localization-martensitic transformation interactions in Fe-Cr-Ni monocrystal".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 35A.9(2004):2575-2586.