Heterogeneity of the Nugget Microstructure in a Thick 2050 Al Friction-Stirred Weld

被引:23
作者
Avettand-Fenoel, Marie-Noelle [1 ]
Taillard, Roland [1 ]
机构
[1] Univ Lille 1, CNRS, UMR 8207, Unite Mat & Transformat UMET, F-59655 Villeneuve Dascq, France
来源
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 01期
关键词
CRYSTALLOGRAPHIC TEXTURE; CORROSION BEHAVIOR; PRECIPITATION; EVOLUTION; MODEL;
D O I
10.1007/s11661-014-2638-x
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The current article deals with 19-mm-thick welds of AA 2050. These joints obtained by friction stir butt welding on half penetration were subsequently strained and artificially aged. The nugget's hardness weakens along the plate thickness from the top surface. This evolution is explained by the modification of the precipitation state, which overcomes the effects of the changes of size and preferred orientation of grains along the nugget's depth. This modification of microstructure arises from the various strains, strain rates, and temperatures encountered in the different areas in the nugget. The postwelding treatment did not manage to suppress either the undermatching of the original nugget compared to the base material or the differences of thermal stabilities at the different depths in the nugget.
引用
收藏
页码:300 / 314
页数:15
相关论文
共 39 条
[1]   Quantifying crystallographic texture in the probe-dominated region of thick-section friction-stir-welded aluminium [J].
Ahmed, M. M. Z. ;
Wynne, B. P. ;
Rainforth, W. M. ;
Threadgill, P. L. .
SCRIPTA MATERIALIA, 2008, 59 (05) :507-510
[2]  
[Anonymous], ELSEVIER MAT SCI SER
[3]  
[Anonymous], P 3 INT S FRICT STIR
[4]  
[Anonymous], THESIS AUCKLAND U TE
[5]   Strains and strain rates during friction stir welding [J].
Arora, A. ;
Zhang, Z. ;
De, A. ;
DebRoy, T. .
SCRIPTA MATERIALIA, 2009, 61 (09) :863-866
[6]   Experimental Investigation of Three-Dimensional (3-D) Material Flow Pattern in Thick Dissimilar 2050 Friction-Stir Welds [J].
Avettand-Fenoel, Marie-Noelle ;
Taillard, Roland ;
Laye, Julien ;
Odievre, Thierry .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (02) :563-578
[7]   Design of the friction stir welding tool using the continuum based FEM model [J].
Buffa, G ;
Hua, J ;
Shivpuri, R ;
Fratini, L .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2) :381-388
[8]   A continuum based FEM model for friction stir welding - model development [J].
Buffa, G ;
Hua, J ;
Shivpuri, R ;
Fratini, L .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2) :389-396
[9]   Mapping the microstructure of a friction-stir welded (FSW) Al-Li-Cu alloy [J].
De Geuser, F. ;
Bley, F. ;
Denquin, A. ;
Deschamps, A. .
XIV INTERNATIONAL CONFERENCE ON SMALL-ANGLE SCATTERING (SAS09), 2010, 247
[10]  
Deschamps A., 2012, 13 INT C AL ALL ICAA, P1145