Hardening of an Al-Cu-Mg alloy containing Types I and II S phase precipitates

被引：94
作者：
Parel, T. S. [1 ]
Wang, S. C. [1 ]
Starink, M. J. [1 ]
机构：
[1] Univ Southampton, Mat Res Grp, Sch Engn Sci, Southampton SO17 1BJ, Hants, England
来源：
MATERIALS & DESIGN | 2010年 / 31卷
关键词：
Strength; 2024; alloy; Al-Cu-Mg; Precipitate; Dislocation;
D O I：
10.1016/j.matdes.2009.12.048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of different thermo-mechanical treatments, including up to 10% cold work, on the hardness of the 2024 (Al-Cu-Mg) alloy was studied. Artificial ageing was conducted through heating at a constant rate to specific temperatures followed by rapid cooling. It was found that quenched only alloy 2024, which is found to form Type II S precipitates, possesses lower hardness compared to cold worked alloy 2024, on ageing to temperatures below 300 degrees C. Cold working lowers the temperature required for S phase precipitation to start while decreasing the quenching rate is seen to give higher hardness on ageing to temperatures below 200 degrees C. Type II S precipitate is found to result in lower hardening as compared to that due to Type I S precipitate. The reason for this is suggested to be due to the larger size of Type II S precipitate. The hardness of solution treated and subsequently cold worked and artificially aged 2024 is increased if the quenching is conducted in water at 80 degrees C. This effect is notable if the ageing temperature is below about 200 degrees C. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：S2 / S5
页数：4
相关论文
共 24 条
[1]  
ALEKSEEV AA, 1993, PHYS MET METALLOGR, V75, P279
[2]   THE CRYSTALLOGRAPHY AND MORPHOLOGY OF THE S'-PHASE PRECIPITATE IN AN AL(CUMG) ALLOY [J].
GUPTA, AK ;
GAUNT, P ;
CHATURVEDI, MC .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1987, 55 (03) :375-387
[3]   Characterization of 2024-T3: An aerospace aluminum alloy [J].
Huda, Zainul ;
Taib, Nur Iskandar ;
Zaharinie, Tuan .
MATERIALS CHEMISTRY AND PHYSICS, 2009, 113 (2-3) :515-517
[4]   Influence of grain structure and slip planarity on fatigue crack growth in low alloying artificially aged 2xxx aluminium alloys [J].
Kamp, N. ;
Gao, N. ;
Starink, M. J. ;
Sinclair, I. .
INTERNATIONAL JOURNAL OF FATIGUE, 2007, 29 (05) :869-878
[5]   A model for precipitation kinetics and strengthening in Al-Cu-Mg alloys [J].
Khan, I. N. ;
Starink, M. J. ;
Yan, J. L. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 472 (1-2) :66-74
[6]   Microstructure and strength modelling of Al-Cu-Mg alloys during non-isothermal treatments Part 1-Controlled heating and cooling [J].
Khan, I. N. ;
Starink, M. J. .
MATERIALS SCIENCE AND TECHNOLOGY, 2008, 24 (12) :1403-1410
[7]   Early stages of decomposition in Al alloys investigated by X-ray absorption [J].
Klobes, B. ;
Staab, T. E. M. ;
Dudzik, E. .
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2008, 2 (04) :182-184
[8]   GPB zones and composite GPB/GPBII zones in Al-Cu-Mg alloys [J].
Kovarik, L. ;
Court, S. A. ;
Fraser, H. L. ;
Mills, M. J. .
ACTA MATERIALIA, 2008, 56 (17) :4804-4815
[9]   A MATRIX ANALYSIS OF THE ROTATION IN CRYSTALS [J].
LI, C ;
YAN, M .
MATERIALS SCIENCE AND ENGINEERING, 1983, 57 (02) :143-147
[10]   Modeling the strengthening response to aging process of heat-treatable aluminum alloys containing plate/disc- or rod/needle-shaped precipitates [J].
Liu, G ;
Zhang, GJ ;
Ding, XD ;
Sun, J ;
Chen, KH .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 344 (1-2) :113-124
123