Textures of rectangular extrusions and their effects on the mechanical properties of thermo-mechanically treated, lamellar microstructure, Ti-47Al-2Cr-2Nb-0.15B

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	Textures of rectangular extrusions and their effects on the mechanical properties of thermo-mechanically treated, lamellar microstructure, Ti-47Al-2Cr-2Nb-0.15B
	R. C. Liu; D. Liu; J. Tan; Y. Y. Cui; R. Yang; F. Y. Liu; P. A. Withey
	2014
发表期刊	Intermetallics
ISSN	0966-9795
卷号	52 页码:110-123
摘要	Textures of alpha(2) and 7 phases in Ti-47Al-2Cr-2Nb-0.15B (at.%) rectangular billet, extruded below its a transus temperature, were evaluated and their relation to the mechanical properties of TMTL microstructure was investigated. Strong alpha(2) phase texture {11 (2) over bar}<10<(1)over bar>0> was found after extrusion and it evolved into {11 (2) over bar}<10<(1)over bar>0> recrystallization texture via oriented growth during a solution treatment. The alpha/alpha(2) phase texture changes alpha grain growth behavior at T-alpha, such that it is slow at first but becomes rapid when the solution time exceeds a critical value, creating a new method of obtaining fine-grained TMTL microstructure. Mechanical properties of the TMTL microstructure were shown to be closely related to the Kearns texture factor of the alpha(2) phase along the loading direction. The center and edge of as-extruded billet have distinct gamma phase textures, dominated by beta fiber (center) and featuring multiple texture components (edge), respectively. In the highly strained edge region, the presence of C-twin, Y, and Z texture components suggests the occurrence of mechanical twinning and shear band deformation, while BIG auxiliary component was found to act as a transition band from deformation to cubic recrystallization texture, in support of the oriented nucleation hypothesis for the formation of cubic texture. (C) 2014 Elsevier Ltd. All rights reserved.
部门归属	[liu, renci ; liu, dong ; tan, jun ; cui, yuyou ; yang, rui] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liu, feiyang ; withey, paul a.] rolls royce plc, derby de24 8bj, england. [withey, paul a.] univ birmingham, sch met & mat, birmingham b15 2tt, w midlands, england. ; yang, r (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; ryang@imr.ac.cn
关键词	Titanium Aluminides, Based On Tial Mechanical Properties Recrystallization Extrusion Texture Microstructure Gamma-titanium Aluminide Tial-based Alloys Single-crystals Pst Crystals Temperature-dependence Plastic-deformation Tensile Properties Room-temperature Yield-stress Hot-working
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72881
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. C. Liu,D. Liu,J. Tan,et al. Textures of rectangular extrusions and their effects on the mechanical properties of thermo-mechanically treated, lamellar microstructure, Ti-47Al-2Cr-2Nb-0.15B[J]. Intermetallics,2014,52:110-123.
APA	R. C. Liu.,D. Liu.,J. Tan.,Y. Y. Cui.,R. Yang.,...&P. A. Withey.(2014).Textures of rectangular extrusions and their effects on the mechanical properties of thermo-mechanically treated, lamellar microstructure, Ti-47Al-2Cr-2Nb-0.15B.Intermetallics,52,110-123.
MLA	R. C. Liu,et al."Textures of rectangular extrusions and their effects on the mechanical properties of thermo-mechanically treated, lamellar microstructure, Ti-47Al-2Cr-2Nb-0.15B".Intermetallics 52(2014):110-123.