The effect of predeformation on the β" and β′ precipitates and the role of Q′ phase in an Al-Mg-Si alloy;: AA6022

被引：107
作者：
Yassar, RS [1 ]
Field, DP
Weiland, H
机构：
[1] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA
[2] Alcoa Tech Ctr, Alcoa Ctr, PA 15069 USA
来源：
SCRIPTA MATERIALIA | 2005年 / 53卷 / 03期
关键词：
aluminum alloys; plastic deformation; metastable phases; transmission electron microscopy (TEM); differential scanning calorimetry;
D O I：
10.1016/j.scriptamat.2005.04.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The precipitation of metastable phases during differential scanning calorimetry experiments of cold deformed AA6022 is investigated by means of transmission electron microscopy. It is found that beta" precipitates are replaced by beta' and Q' in the predeformed samples. The results show that at higher temperatures only Q' precipitates are present in the microstructure of the predeformed samples. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：299 / 303
页数：5
相关论文
共 22 条
[1]  
ALLEN RM, 1978, METALL T A, V28, P1185
[2]   The crystal structure of the β" phase in Al-Mg-Si alloys [J].
Andersen, SJ ;
Zandbergen, HW ;
Jansen, J ;
Traeholt, C ;
Tundal, U ;
Reiso, O .
ACTA MATERIALIA, 1998, 46 (09) :3283-3298
[3]   COARSENING OF GRAIN-BOUNDARY PRECIPITATES [J].
ARDELL, AJ .
ACTA METALLURGICA, 1972, 20 (04) :601-&
[4]   The effects of preaging treatments on aging kinetics and mechanical properties in AA6111 aluminum autobody sheet [J].
Bryant, JD .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (08) :1999-2006
[5]   Phase relations and precipitation in Al-Mg-Si alloys with Cu additions [J].
Chakrabarti, DJ ;
Laughlin, DE .
PROGRESS IN MATERIALS SCIENCE, 2004, 49 (3-4) :389-410
[6]   Influence of predeformation on ageing in an Al-Zn-Mg alloy -: I.: Microstructure evolution and mechanical properties [J].
Deschamps, A ;
Livet, F ;
Bréchet, Y .
ACTA MATERIALIA, 1998, 47 (01) :281-292
[7]  
DUMLOT SD, 1984, SCRIPTA MATER, V18, P1347
[8]   A CALORIMETRIC STUDY OF PRECIPITATION IN COMMERCIAL ALUMINUM ALLOY-6061 [J].
DUTTA, I ;
ALLEN, SM .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1991, 10 (06) :323-326
[9]   The precipitation sequence in Al-Mg-Si alloys [J].
Edwards, GA ;
Stiller, K ;
Dunlop, GL ;
Couper, MJ .
ACTA MATERIALIA, 1998, 46 (11) :3893-3904
[10]   STRUCTURE OF METASTABLE PRECIPITATES FORMED DURING AGING OF AN AL-MG-SI ALLOY [J].
JACOBS, MH .
PHILOSOPHICAL MAGAZINE, 1972, 26 (01) :1-&
123