A CALORIMETRIC STUDY OF THE PRECIPITATION HARDENING MECHANISMS IN AN Al-Cu-Mg-Si ALLOY

被引：3

作者：

Hayoune, Abdelali ^{[1
]}

机构：

[1] Nucl Res Ctr Birine OB 180, Ain Oussera 17200, Djelfa, Algeria

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2013年 / 27卷 / 20期

关键词：

Precipitation; Al-Cu-Mg-Si alloy; differential scanning calorimetry; aging; hardening; X-RAY-DIFFRACTION; ALUMINUM; KINETICS; SILICON;

D O I：

10.1142/S0217979213500847

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The precipitation phenomena and the related hardening in an Al-Cu-Mg-Si alloy were studied by calorimetry, X-ray diffraction analysis and microhardness measurements. The main calorimetric peaks were identified to be due to beta '', theta' and Q' phases precipitation. The hardening during aging at room temperature and 160 degrees C, was respectively, explained by atomic clusters and GP zones formation and by GP zones and beta ''/theta' phases coprecipitation. Although the mechanical properties variation during aging at 200 degrees C is simple, the corresponding microstructural evolution is complex: on the basis of the DSC results, the increasing of microhardness values, is mainly due to the coprecipitation of GP zones and beta ''/theta' phases, however, the maximum hardening is explained by the coexistence of beta ''/theta' and theta '' phases. Another important conclusion is that during aging at 160 degrees C and 200 degrees C, the theta' phase is essentially developed from GP zones.

引用

页数：16

共 26 条

[1] Early ageing mechanisms in a high-copper AlCuMg alloy [J].

Abis, S ;

Massazza, M ;

Mengucci, P ;

Riontino, G .

SCRIPTA MATERIALIA, 2001, 45 (06) :685-691

[2] CALORIMETRIC STUDY ON PRECIPITATION PATH IN 2024-ALLOY AND ITS SIC COMPOSITE [J].

BADINI, C ;

MARINO, F ;

VERNE, E .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 191 (1-2) :185-191

[3] Calorimetric study of precipitation kinetics of Al-Cu-Mg and Al-Cu-Mg-0.06 wt.% Sn alloys [J].

Banerjee, Sanjib ;

Robi, P. S. ;

Srinivasan, A. .

METALS AND MATERIALS INTERNATIONAL, 2010, 16 (04) :523-531

[4] Thermal analysis of Al-Cu-Mg-Si alloy with Ag/Zr additions [J].

Bassani, Paola ;

Gariboldi, E. ;

Ripamonti, D. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 91 (01) :29-35

[5] Calorimetric analyses on aged Al-4.4Cu-0.5Mg-0.9Si-0.8Mn alloy (AA2014 grade) [J].

Bassani, Paola ;

Gariboldi, E. ;

Vimercati, G. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 87 (01) :247-253

[6] Transmission electron microscopy study of the β′ phase (Al-Mg-Si alloys) and QC phase (Al-Cu-Mg-Si alloys):: Ordering mechanism and crystallographic structure [J].

Cayron, C ;

Buffat, PA .

ACTA MATERIALIA, 2000, 48 (10) :2639-2653

[7] 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

[8] Coexistence of clusters, GPB zones, S"-, S′- and S-phases in an Al-0.9% Cu-1.4% Mg alloy [J].

Charai, A ;

Walther, T ;

Alfonso, C ;

Zahra, AM ;

Zahra, CY .

ACTA MATERIALIA, 2000, 48 (10) :2751-2764

[9] EFFECT OF 0.23-WT PERCENT-SI ON PRECIPITATION IN THE AL-1.52WT PERCENT-CU-0.74WT PERCENT-MG ALLOY [J].

CHATURVEDI, MC ;

GUPTA, AK ;

JENA, AK .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 110 :187-192

[10] ROLE OF AL2O3 PARTICULATE REINFORCEMENTS ON PRECIPITATION IN 2014 AL-MATRIX COMPOSITES [J].

DUTTA, I ;

HARPER, CP ;

DUTTA, G .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1994, 25 (08) :1591-1602

← 1 2 3 →