Abnormally enhanced diamagnetism in Al-Zn-Mg alloys

被引：3

作者：

Nishimura, Katsuhiko ^{[1
]}

Matsuda, Kenji ^{[1
]}

Lee, Seungwon ^{[1
]}

Nunomura, Norio ^{[1
]}

Shimano, Tomoki ^{[1
]}

Bendo, Artenis ^{[1
]}

Watanabe, Katsumi ^{[1
]}

Tsuchiya, Taiki ^{[1
]}

Namiki, Takahiro ^{[1
]}

Toda, Hiroyuki ^{[2
]}

Yamaguchi, Masatake ^{[3
]}

机构：

[1] Univ Toyama, Grad Sch Sci & Engn, Gofuku, Toyama 9308555, Japan

[2] Kyushu Univ, Struct Mat Res Ctr 3D 4D, Dept Mech Engn, Nishi Ward, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan

[3] Japan Atom Energy Agcy, Ctr Computat Sci & E Syst, Tokai, Ibaraki 3191195, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 774卷

关键词：

Al-Zn-Mg alloys; Time dependent magnetization; Enhanced diamagnetism; POSITRON-ANNIHILATION; ZONES; PHASE;

D O I：

10.1016/j.jallcom.2018.10.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Temperature and time dependences of magnetization of Al-1.0%Zn-4.2%Mg, Al-2.6%Zn-3.2%Mg, Al-4.1% Zn-1.1%Mg, and Al-5%Zn (at.%) alloys were measured in the range between 10 and 310 K after various periods of natural aging and peak-aged heat treatments. Enhanced diamagnetic contributions on the magnetization were observed for the as-quenched Al-Zn-Mg alloys for the first time. The enhanced diamagnetism observed in Al-2.6%Zn-3.2%Mg and Al-4.1%Zn-1.1%Mg were found to largely alter in natural aging, while that of Al-1.0%Zn-4.2%Mg little changed. After peak-aged heat treatments, the diamagnetism of Al-Zn-Mg was largely reduced. The binary Al-5%Zn showed neither enhanced diamagnetism nor natural aging effect on the magnetization. Isothermal time variations of magnetization of Al-Zn-Mg alloys at 300 K were found to be related with solute-vacancy clustering. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：405 / 409

页数：5

共 24 条

[1] Kinetics of natural aging in Al-Mg-Si alloys studied by positron annihilation lifetime spectroscopy [J].

Banhart, J. ;

Lay, M. D. H. ;

Chang, C. S. T. ;

Hill, A. J. .

PHYSICAL REVIEW B, 2011, 83 (01)

[2] 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

[3] STUDY OF FORMATION AND REVERSION OF GUINIER-PRESTON ZONES IN AL-4.5AT-PERCENT-ZN-XAT-PERCENT-MG ALLOYS BY POSITRONS [J].

DLUBEK, G ;

KRAUSE, R ;

BRUMMER, O ;

PLAZAOLA, F .

JOURNAL OF MATERIALS SCIENCE, 1986, 21 (03) :853-858

[4] Hardening nanostructures in an AlZnMg alloy [J].

Dupasquier, A. ;

Ferragut, R. ;

Iglesias, M. M. ;

Massazza, M. ;

Riontino, G. ;

Mengucci, P. ;

Barucca, G. ;

Macchi, C. E. ;

Somoza, A. .

PHILOSOPHICAL MAGAZINE, 2007, 87 (22) :3297-3323

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

Dupasquier, A ;

Kögel, G ;

Somoza, A .

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

[6] Positron lifetime evolution during room temperature ageing in Al-Zn-Mg-(Cu) [J].

Dupasquier, A. ;

Ferragut, R. ;

Liddicoat, P. ;

Moja, F. ;

Ringer, S. P. .

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 11, 2009, 6 (11) :2301-+

[7] Effect of Copper Addition on the Cluster Formation Behavior of Al-Mg-Si, Al-Zn-Mg, and Al-Mg-Ge in the Natural Aging [J].

Hatakeyama, Daichi ;

Nishimura, Katsuhiko ;

Matsuda, Kenji ;

Namiki, Takahiro ;

Lee, Seungwon ;

Nunomura, Norio ;

Aida, Tetsuo ;

Matsuzaki, Teiichiro ;

Holmestad, Randi ;

Wenner, Sigurd ;

Marioara, Calin D. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2018, 49A (11) :5871-5877

[8]

IDA T, 1993, Z PHYS D ATOM MOL CL, V26, pS140, DOI 10.1007/BF01425644

[9]

Lee S., 2017, KEIKINZOKU, V67, P162, DOI [10.2464/jilm.67.162, DOI 10.2464/JILM.67.162]

[10] Early stages of solute clustering in an Al-Mg-Si alloy [J].

Liu, Meng ;

Cizek, Jakub ;

Chang, Cynthia S. T. ;

Banhart, John .

ACTA MATERIALIA, 2015, 91 :355-364

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