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作者:

Chen, S. (Chen, S..) (学者:陈莎) | Jiang, X. (Jiang, X..)

收录:

EI Scopus SCIE

摘要:

Texture evolution and deformation mechanism in the weld zones of friction stir welded 2219Al alloy have been investigated by the electron backscatter diffraction method. The weld zones are characterized by elongated structure in the base material, the heat affected zone and the thermo-mechanically affected zone and rotated elongated structure in the nugget zone. Four main texture components, Cube {001}< 100 >, Goss {011}< 100 >, Brass {011}< 211 > and Cube ND {001}< 110 > close to Cube component, were developed in the TMAZ, the HAZ and the nugget zone; S {123}< 634 > was developed in the nugget zone only with Cube component orientated as their next neighbour and the nugget zone is dominated by Cube, Goss and S texture components. Cube grains in the nugget zone were formed by strain induced boundary migration mechanism (SIBM). Both variants of the texture components have two slip systems with the highest Schmid factors 0.42. Both Cube and Goss components slip on two planes (111) and ((1) over bar 11). Relatively larger fractions of Sigma 3, Sigma 9 twin boundaries and Sigma 11, Sigma 29a boundaries have been found in the centre of the weld zone. Materials in the TMAZ have undergone dynamic recovery; geometric dynamic recrystallization (GDRX) occurred in the nugget zone. (C) 2014 Elsevier B.V. All rights reserved.

关键词:

Deformation Dynamic recrystallization Electron backscatter diffraction Friction stir welding Texture

作者机构:

  • [ 1 ] [Chen, S.]Beijing Univ Technol, Welding Res Inst, Beijing 100124, Peoples R China
  • [ 2 ] [Jiang, X.]Beijing Univ Technol, Welding Res Inst, Beijing 100124, Peoples R China

通讯作者信息:

  • 陈莎

    [Chen, S.]Beijing Univ Technol, Welding Res Inst, Beijing 100124, Peoples R China

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来源 :

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

ISSN: 0921-5093

年份: 2014

卷: 612

页码: 267-277

6 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:256

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 25

SCOPUS被引频次: 28

ESI高被引论文在榜: 0 展开所有

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