Microstructural Characterization of the Shear Bands in Fe-Cr-Ni Single Crystal by EBSD

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	Microstructural Characterization of the Shear Bands in Fe-Cr-Ni Single Crystal by EBSD
	H. J. Yang; J. H. Zhang; Y. B. Xu; M. A. Meyers
	2008
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	24 期号:6 页码:819-828
摘要	An investigation has been made in to the microstructural characterization of the shear bands generated under high-strain rate (approximate to 10(4) s(-1)) deformation in Fe-15%Cr-15%Ni single crystal by EBSD-SEM (electron backscatter diffraction-scanning electron microscopy), TEM (transmission electron in microscopy) and HREM (highresolution electron microscopy). The results reveal that the propagation of the shear band exhibits an asymmetrical behavior arising from inhomogenous distribution in plasticity in the bands because of different resistance to the collapse in different crystallographic directions; The gamma-epsilon-alpha' phase transformations may take place inside and outside the bands, and these martensitic phases currently nucleate at intersections either between the twins and deformation bands or between the twins and epsilon-sheet. Investigation by EBSD shows that recrystallization can occur in the bands with a grain size of an average of 0.2 mu m in diameter. These nano-grains are proposed to attribute to the results of either dynamic or static recrystallization, which can be described by the rotational recrystallization mechanism. Calculation and analysis indicate that the strain rate inside the shear band can reach 2.50x10(6) s(-1), which is higher, by two or three orders of magnitude, than that exerted dynamically on the specimen tested.
部门归属	[yang, huajie; zhang, j. h.; xu, yongbo] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [meyers, marc andre] univ calif san diego, la jolla, ca 92093 usa.;xu, yb (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;ybxu@imr.ac.cn
关键词	High-strain Rate Deformation Adiabatic Shear Band Electron Backscatter Diffraction (Ebsd) Recrystallization Fe-cr-ni Single Crystal Severe Plastic-deformation High-strain-rate Adiabatic Shear Stainless-steel Dynamic Recrystallization Induced Martensite Grain-size Localization Temperature Evolution
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WOS记录号	WOS:000261773700001
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/321006/33272
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. J. Yang,J. H. Zhang,Y. B. Xu,et al. Microstructural Characterization of the Shear Bands in Fe-Cr-Ni Single Crystal by EBSD[J]. Journal of Materials Science & Technology,2008,24(6):819-828.
APA	H. J. Yang,J. H. Zhang,Y. B. Xu,&M. A. Meyers.(2008).Microstructural Characterization of the Shear Bands in Fe-Cr-Ni Single Crystal by EBSD.Journal of Materials Science & Technology,24(6),819-828.
MLA	H. J. Yang,et al."Microstructural Characterization of the Shear Bands in Fe-Cr-Ni Single Crystal by EBSD".Journal of Materials Science & Technology 24.6(2008):819-828.