Characterization of dynamic microstructural evolution of AA7150 aluminum alloy at high strain rate during hot deformation

被引：22
作者：
Jiang, Fu-lin [1 ,2 ]
Zhang, Hui [1 ,3 ]
Weng, Shu-chu [1 ]
Fu, Ding-fa [1 ,3 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] McMaster Univ, Dept Mat Sci & Engn, 1280 Main St West, Hamiltion, ON L8S 4L7, Canada
[3] Hunan Univ, Hunan Prov Key Lab Spray Deposit Technol & Applic, Changsha 410082, Hunan, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2016年 / 26卷 / 01期
关键词：
Al-Zn-Mg alloy; hot compression; dynamic phenomena; microstructure; SOLID-STATE REACTIONS; MECHANICAL-BEHAVIOR; KINETIC-PARAMETERS; RECRYSTALLIZATION; CU; PRECIPITATION; QUENCH; NUCLEATION; PARTICLES; TEXTURE;
D O I：
10.1016/S1003-6326(16)64087-6
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The AA7150 aluminum alloy was compressed to various strains at strain rate of 10 s(-1) and temperatures of 300 degrees C and 450 degrees C, respectively. Flow stress behavior, substructure evolution, morphology and spatial distribution of precipitates were studied based on differential scanning calorimetry analysis and transmission electron microscope observation. The results showed that dynamic flow softening occurs during hot deformation. The main softening mechanism could be concluded as dynamic recovery at 300 degrees C and continuous dynamic recrystallization at 450 degrees C. The clear heterogeneous spatial distributions of precipitates are found during deformation and enhanced with increased strain. Higher contents of Cu in T phases are found at 450 degrees C than at 300 degrees C, which present a transformation process from T phases to S phases as well. The associated evidence of dynamic precipitation on dislocations and particle-stimulated nucleation, as well as the detailed microstructural inherited relationship and morphological texture (particles preferred orientation) were characterized.
引用
收藏
页码：51 / 62
页数：12
相关论文
共 39 条
[1]   DYNAMIC PRECIPITATION AND SOLUTE HARDENING IN A V-MICROALLOYED STEEL AND 2 NB STEELS CONTAINING HIGH-LEVELS OF MN [J].
AKBEN, MG ;
WEISS, I ;
JONAS, JJ .
ACTA METALLURGICA, 1981, 29 (01) :111-121
[2]   THE EFFECT OF MICROSTRUCTURE ON THE MECHANICAL-BEHAVIOR AND FRACTURE MECHANISM IN A 7050-T76 ALUMINUM-ALLOY [J].
ALARCON, OE ;
NAZAR, AMM ;
MONTEIRO, WA .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 138 (02) :275-285
[3]   The effect of particle-stimulated nucleation on texture banding in an aluminium alloy [J].
Bennett, T. A. ;
Petrov, R. H. ;
Kestens, L. A. I. ;
Zhuang, L. -Z. ;
de Smet, P. .
SCRIPTA MATERIALIA, 2010, 63 (05) :461-464
[4]   COMPARATIVE HOT WORKABILITY OF 7012-ALLOY AND 7075-ALLOY AFTER DIFFERENT PRETREATMENTS [J].
CERRI, E ;
EVANGELISTA, E ;
FORCELLESE, A ;
MCQUEEN, HJ .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 197 (02) :181-198
[5]   Predicting the interfaces between fatigue crack growth regimes in 7150-T651 aluminium alloy using the fatigue damage map [J].
Curtis, SA ;
Romero, JS ;
de los Rios, ER ;
Rodopoulos, CA ;
Levers, A .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 344 (1-2) :79-85
[6]   Hot deformation behavior and microstructural evolution of homogenized 7050 aluminum alloy during compression at elevated temperature [J].
Deng, Ying ;
Yin, Zhimin ;
Huang, Jiwu .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (03) :1780-1786
[7]   Influence of quench and heating rates on the ageing response of an Al-Zn-Mg-(Zr) alloy [J].
Deschamps, A ;
Brechet, Y .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 251 (1-2) :200-207
[8]   In situ evaluation of dynamic precipitation during plastic straining of an Al-Zn-Mg-Cu alloy [J].
Deschamps, A. ;
Fribourg, G. ;
Brechet, Y. ;
Chemin, J. L. ;
Hutchinson, C. R. .
ACTA MATERIALIA, 2012, 60 (05) :1905-1916
[9]   Nature and distribution of quench-induced precipitation in an Al-Zn-Mg-Cu alloy [J].
Deschamps, A ;
Brechet, Y .
SCRIPTA MATERIALIA, 1998, 39 (11) :1517-1522
[10]   Current issues in recrystallization: a review [J].
Doherty, RD ;
Hughes, DA ;
Humphreys, FJ ;
Jonas, JJ ;
Jensen, DJ ;
Kassner, ME ;
King, WE ;
McNelley, TR ;
McQueen, HJ ;
Rollett, AD .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (02) :219-274
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