Distinct Hardening Behavior of Ultrafine-Grained Al-Zn-Mg-Cu Alloy

被引：15
作者：
Ma, Kaka [1 ]
Smith, Thale [1 ]
Hu, Tao [1 ]
Topping, Troy D. [1 ,2 ]
Lavernia, Enrique J. [1 ]
Schoenung, Julie M. [1 ]
机构：
[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA
[2] Calif State Univ Sacramento, Dept Mech Engn, Sacramento, CA 95819 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2014年 / 45A卷 / 11期
关键词：
ALUMINUM-ALLOY; NANOSTRUCTURED MATERIALS; MECHANICAL-PROPERTIES; PRECIPITATION; ZONES;
D O I：
10.1007/s11661-014-2498-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The age-hardening response for ultrafine-grained, powder-metallurgy-consolidated aluminum 7091 was investigated for the first time. Peak hardening occurred after aging at 353 K (80 A degrees C) for only 4 hours; further aging for up to 26 hours resulted in only slight fluctuations in hardness values. After the 4-hour aging, the precipitate population consists of a high density of nanoscale GP zones (diameter similar to 3 nm) and nanoscale eta' phase (< 30 nm); eta phase is not present.
引用
收藏
页码：4762 / 4765
页数：4
相关论文
共 33 条
[1]   PRECIPITATION HARDENING [J].
ARDELL, AJ .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (12) :2131-2165
[2]  
Benedyk Joseph C., 2010, LIGHT MET AGE INT MA, P16
[3]   GP-zones in Al-Zn-Mg alloys and their role in artificial aging [J].
Berg, LK ;
Gjonnes, J ;
Hansen, V ;
Li, XZ ;
Knutson-Wedel, M ;
Waterloo, G ;
Schryvers, D ;
Wallenberg, LR .
ACTA MATERIALIA, 2001, 49 (17) :3443-3451
[4]  
Bohlen J.W., 1986, ASTM STP, P166
[5]   Secondary ageing in an aluminium alloy 7050 [J].
Buha, J. ;
Lumley, R. N. ;
Crosky, A. G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 492 (1-2) :1-10
[6]   Natural aging behavior of AA7050 Al alloy after cryogenic rolling [J].
Camilo Magalhaes, Danielle Cristina ;
Hupalo, Marcio Ferreira ;
Cintho, Osvaldo Mitsuyuki .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 593 :1-7
[7]   Nanostructured Al-Zn-Mg-Cu alloy synthesized by cryomilling and spark plasma sintering [J].
Chen Han-bin ;
Tao Kai ;
Yang Bin ;
Zhang Ji-shan .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2009, 19 (05) :1110-1115
[8]  
Davis J.R., 1993, ASM SPECIALTY HDB
[9]   Precipitation kinetics in a severely plastically deformed 7075 aluminium alloy [J].
Deschamps, A. ;
De Geuser, F. ;
Horita, Z. ;
Lee, S. ;
Renou, G. .
ACTA MATERIALIA, 2014, 66 :105-117
[10]   CALORIMETRIC STUDY OF THE DISSOLUTION OF GUINIER-PRESTON ZONES AND ETA'-PHASE IN AL-4.5AT-PERCENT-ZN-1.75AT-PERCENT-MG [J].
DONOSO, E .
MATERIALS SCIENCE AND ENGINEERING, 1985, 74 (01) :39-46
1234