Kinetics of tri-axial and spatial residual stress relaxation: Study by synchrotron radiation diffraction in a 2014Al alloy

被引：12

作者：

Ferreira-Barragans, S. ^{[1
]}

Fernandez, R. ^{[1
]}

Fernandez-Castrillo, P. ^{[1
]}

Gonzalez-Doncel, G. ^{[1
]}

机构：

[1] CSIC, Ctr Nacl Invest Met CENIM, Dept Met Phys, E-28040 Madrid, Spain

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 523卷

关键词：

Residual stress; Synchrotron radiation; Stress relaxation; Creep; Aluminum alloys; PLASTIC-DEFORMATION; VOL.PERCENT SICW; THERMAL-STRESS; CREEP; TEMPERATURE; COMPOSITES;

D O I：

10.1016/j.jallcom.2012.01.081

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A strong residual stress, RS, gradient is generated in metallic samples by quenching in cold water from high temperature. In this research, the evolution of both the tri-axial and spatial RS state upon annealing has been analyzed. This analysis is proposed as a method to deepen the high temperature deformation of structural materials and the influence of possible microstructural gradients. This is possible thanks to the high spatial resolution offered by synchrotron radiation, SR. Using SR diffraction, the relaxation of the RS upon annealing of cylindrical samples of 2014Al alloy has been studied to asses this method. Whereas general tendencies between data derived from the method and knowledge of the creep behavior resulting from conventional uni-axial tests are in good agreement, discrepancies related to microstructural gradients in the material are also found and discussed. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：94 / 101

页数：8

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