Anisotropy of the residual strain in Mg-SiCp composites

被引:7
作者
Garces, Gerardo
Bruno, Giovanni
机构
[1] CSIC, Dept Met Phys, Natl Ctr Met Res CENIM, E-28040 Madrid, Spain
[2] Manchester Mat Sci Ctr, Manchester M1 7HS, Lancs, England
关键词
metal matrix composites (MMC); residual stress; neutron diffraction; hexagonal lattices; elastic-plastic anisotropy;
D O I
10.1016/j.compscitech.2006.03.019
中图分类号
TB33 [复合材料];
学科分类号
摘要
Residual strains have been determined by neutron diffraction in pure magnesium matrix composites. In the reinforcing phase, they are hydrostatic, compressive and increase with increasing reinforcement volume fraction. Both the unreinforced alloy and the composites present anisotropic matrix residual strains. They are hydrostatic and compressive for grain with their basal pole almost perpendicular to the extrusion direction ("basal oriented grains") and tensile and deviatoric for some other orientations ("non-basal grains"). This can be explained modeling the material as a three-phase composite, where both the "basal oriented grains" and the SiC particles are hard phases and the rest of the Mg grains are the soft phase. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2664 / 2670
页数:7
相关论文
共 27 条
[1]   Study of slip mechanisms in a magnesium alloy by neutron diffraction and modeling [J].
Agnew, SR ;
Tomé, CN ;
Brown, DW ;
Holden, TM ;
Vogel, SC .
SCRIPTA MATERIALIA, 2003, 48 (08) :1003-1008
[2]   Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y [J].
Agnew, SR ;
Yoo, MH ;
Tomé, CN .
ACTA MATERIALIA, 2001, 49 (20) :4277-4289
[3]   Influence of grain size on the compressive deformation of wrought Mg-3Al-1Zn [J].
Barnett, MR ;
Keshavarz, Z ;
Beer, AG ;
Atwell, D .
ACTA MATERIALIA, 2004, 52 (17) :5093-5103
[4]  
Barrallier L, 2002, MATER SCI FORUM, V404-7, P399
[5]  
BEHNKEN H, 1986, Z METALLKD, V77, P620
[6]   Influence of extrusion temperature on the microstructure and the texture of 6061Al-15 vol. % SICwPM composites [J].
Borrego, A ;
Fernández, R ;
Cristina, MD ;
Ibáñez, J ;
González-Doncel, G .
COMPOSITES SCIENCE AND TECHNOLOGY, 2002, 62 (06) :731-742
[7]  
BUNGE H, 1982, TEXTURE ANAL MAT SCI, P22
[8]   DEFORMATION TWINNING [J].
CHRISTIAN, JW ;
MAHAJAN, S .
PROGRESS IN MATERIALS SCIENCE, 1995, 39 (1-2) :1-157
[9]  
DOLLE H, 1978, Z METALLKD, V69, P410
[10]   AN ANALYTICAL STUDY OF RESIDUAL-STRESS EFFECTS ON UNIAXIAL DEFORMATION OF WHISKER REINFORCED METAL-MATRIX COMPOSITES [J].
DUTTA, I ;
SIMS, JD ;
SEIGENTHALER, DM .
ACTA METALLURGICA ET MATERIALIA, 1993, 41 (03) :885-908