Quantitative analysis of grain refinement in titanium during equal channel angular pressing

被引：104

作者：

Chen, Y. J. ^{[1
]}

Li, Y. J. ^{[2
]}

Walmsley, J. C. ^{[2
]}

Dumoulin, S. ^{[2
]}

Gireesh, S. S. ^{[1
]}

Armada, S. ^{[2
]}

Skaret, P. C. ^{[1
]}

Roven, H. J. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Mat Technol, N-7491 Trondheim, Norway

[2] SINTEF, N-7465 Trondheim, Norway

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 09期

关键词：

Electron backscattering diffraction (EBSD); Severe plastic deformation (SPD); Titanium; Grain refining; Continuous dynamic recrystallization (CDRX); MICROSTRUCTURE; TI; DEFORMATION; ECAP; RECRYSTALLIZATION; TEMPERATURE; EXTRUSION; CU;

D O I：

10.1016/j.scriptamat.2011.01.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Strain-driven grain subdivision of commercial pure titanium during 1-8 passes of equal channel angular pressing (ECAP) at 723 K is investigated quantitatively by electron backscattering diffraction. The grain refinement mainly takes place in the first pass and the efficiency gradually decreases from 1 to 4 passes, reaching saturation with further increasing strain (6-8 passes). 11 0 1 21 tensile twins are firstly observed in the first pass of ECAP. Misorientation gradients and the driving force of dynamic recrystallization are discussed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：904 / 907

页数：4

共 21 条

[1] EBSP investigation of microstructure and texture evolution during equal channel angular pressing of aluminium [J].

Cao, WQ ;

Godfrey, A ;

Liu, Q .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 361 (1-2) :9-14

[2] Deformation Structures of Pure Titanium during Shear Deformation [J].

Chen, Y. J. ;

Li, Y. J. ;

Walmsley, J. C. ;

Dumoulin, S. ;

Roven, H. J. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2010, 41A (04) :787-794

[3] Microstructure evolution of commercial pure titanium during equal channel angular pressing [J].

Chen, Y. J. ;

Li, Y. J. ;

Walmsley, J. C. ;

Dumoulin, S. ;

Skaret, P. C. ;

Roven, H. J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (03) :789-796

[4] THE DEVELOPMENT OF MICROSTRUCTURE IN A1-5-PERCENT-MG DURING HIGH-TEMPERATURE DEFORMATION [J].

DRURY, MR ;

HUMPHREYS, FJ .

ACTA METALLURGICA, 1986, 34 (11) :2259-2271

[5] Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy [J].

Horita, Z ;

Smith, DJ ;

Nemoto, M ;

Valiev, RZ ;

Langdon, TG .

JOURNAL OF MATERIALS RESEARCH, 1998, 13 (02) :446-450

[6]

Hsu SH, 2007, BIO-MED MATER ENG, V17, P53

[7] Microstructures and dislocation configurations in nanostructured Cu processed by repetitive corrugation and straightening [J].

Huang, JY ;

Zhu, YT ;

Jiang, H ;

Lowe, TC .

ACTA MATERIALIA, 2001, 49 (09) :1497-1505

[8] The microstructures of polycrystalline Al-0.1 Mg after hot plane strain compression [J].

Humphreys, F. J. ;

Bate, P. S. .

ACTA MATERIALIA, 2007, 55 (16) :5630-5645

[9]

Humphreys F.J., 2005, RECRYSTALLIZATION RE

[10] Review - Grain and subgrain characterisation by electron backscatter diffraction [J].

Humphreys, FJ .

JOURNAL OF MATERIALS SCIENCE, 2001, 36 (16) :3833-3854

← 1 2 3 →