Structure evolution of a WE43 Mg alloy submitted to different thermal treatments

被引：110

作者：

Mengucci, P. ^{[1
,2
]}

Barucca, G. ^{[1
,2
]}

Riontino, G. ^{[3
,4
]}

Lussana, D. ^{[3
,4
]}

Massazza, M. ^{[3
,4
]}

Ferragut, R. ^{[5
,6
]}

Aly, E. Hassan ^{[5
,6
,7
]}

机构：

[1] Univ Politecn Marche, Dipartimento Fis & Ingn Mat & Terr, I-60131 Ancona, Italy

[2] Univ Politecn Marche, CNISM, I-60131 Ancona, Italy

[3] Univ Turin, Dipartimento Chim, IFM, NIS Ctr, I-10125 Turin, Italy

[4] Univ Turin, CNISM, I-10125 Turin, Italy

[5] L NESS, Dipartimento Fis, I-22100 Como, Italy

[6] Politecn Milan, CNISM, I-22100 Como, Italy

[7] Ain Shams Univ, Fac Sci, Dept Phys, Cairo 11566, Egypt

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 479卷 / 1-2期

关键词：

Mg alloys; thermal treatments; structure evolution; TEM; positron annihilation; DSC;

D O I：

10.1016/j.msea.2007.06.016

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

The structure evolution of the WE43 Mg alloy during different thermal treatments is studied by differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and positron annihilation spectroscopy (PAS). Isothermal annealings at different temperatures are made, with the aim to correlate the alloy's structure with its hardness response and to compare these treatments to the standard industrial T6 one (16 h at 250 degrees C). The highest hardening effect is obtained with a treatment at 210 degrees C with the formation of both beta" and beta' phases. A residual amount of solute atoms into the matrix after each thermal treatment promotes the renucleation of beta" and beta'. The standard T6 treatment mainly leads to the precipitation of the beta' phase, while the thermal treatment at 280 degrees C essentially promotes the formation of the equilibrium P phase. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：37 / 44

页数：8

共 17 条

[1]

AHMED M, 1992, MAGNESIUM ALLOYS AND THEIR APPLICATIONS, P251

[2]

Hardening precipitation in a Mg-4Y-3RE alloy [J].

Antion, C ;

Donnadieu, P ;

Perrard, F ;

Deschamps, A ;

Tassin, C ;

Pisch, A .

ACTA MATERIALIA, 2003, 51 (18) :5335-5348

[3]

Precipitation reactions in magnesium-rare earth alloys containing Yttrium, Gadolinium or Dysprosium [J].

Apps, PJ ;

Karimzadeh, H ;

King, JF ;

Lorimer, GW .

SCRIPTA MATERIALIA, 2003, 48 (08) :1023-1028

[4]

AZARIKHOSROSHAK. R, 2000, MAGNESIUM ALLOYS THE, P711

[5]

Positron localization effects on the Doppler broadening of the annihilation line: Aluminum as a case study [J].

Calloni, A ;

Dupasquier, A ;

Ferragut, R ;

Folegati, P ;

Iglesias, MM ;

Makkonen, I ;

Puska, MJ .

PHYSICAL REVIEW B, 2005, 72 (05)

[6]

Studies of light alloys by positron annihilation techniques [J].

Dupasquier, A ;

Kögel, G ;

Somoza, A .

ACTA MATERIALIA, 2004, 52 (16) :4707-4726

[7]

Emley EF, 1996, PRINCIPLES MAGNESIUM

[8]

Kirkegaard P., 1989, PATFIT88 RIS NAT LAB

[9]

Lorimer G, 1999, JAPAN INSTITUTE OF METALS, PROCEEDINGS, VOL 12, (JIMIC-3), PTS 1 AND 2, P185

[10]

Precipitation in magnesium alloy WE54 during isothermal ageing at 250°C [J].

Nie, JF ;

Muddle, BC .

SCRIPTA MATERIALIA, 1999, 40 (10) :1089-1094

← 1 2 →