Evolution of interphase and intergranular stresses in Zr-2.5Nb during room temperature deformation

被引：36
|
作者：
Cai, S. [1 ]
Daymond, M. R. [1 ]
Holt, R. A. [1 ]
Gharghouri, M. A. [2 ]
Oliver, E. C. [3 ]
机构：
[1] Queens Univ, Dept Mech & Mat Engn, Kingston, ON K7L 3N6, Canada
[2] Canadian Neutron Beam Ctr, NRC, Chalk River, ON K0J 1J0, Canada
[3] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 501卷 / 1-2期
关键词：
Interphase; Intergranular strain; Neutron diffraction; Asymmetric yielding; Strength differential; Zr-2.5Nb; WT-PERCENT-NB; PRESSURE TUBE MATERIAL; IN-REACTOR DEFORMATION; ZIRCONIUM ALLOYS; IRRADIATION GROWTH; RIETVELD REFINEMENT; MECHANICAL RESPONSE; TEXTURE DEVELOPMENT; RESIDUAL-STRESSES; ROD TEXTURE;
D O I：
10.1016/j.msea.2008.10.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Both in situ tension and compression tests have been carried out on textured Zr-2.5Nb plate material at room temperature. Deformation along all the three principle plate directions has been studied and the evolution of interphase and intergranular strains along the loading and the principle Poisson's directions has been investigated by neutron diffraction. The evolution of interphase and intergranular strain was determined by the relative phase properties, crystal properties and texture distribution. The average phase behaviors are similar during tension and compression, where the P-phase in this material is stronger than the (x-phase. The asymmetric yielding of the alpha-{0 0 2) grain family results in a relatively large intergranular strain in the loading direction during compression and different dependence of strength during tension and compression on texture. The combination of the thermal residual stress and the asymmetric CRSS in the (c) axis gives the {0 0 0 2} grain family a higher strength in compression than in tension. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：166 / 181
页数：16
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