Microstructure evolution in a hydrogen charged and aged Al-Zn-Mg alloy

被引：12

作者：

Bendo, Artenis ^{[1
]}

Matsuda, Kenji ^{[2
]}

Lee, Seungwon ^{[2
]}

Nishimura, Katsuhiko ^{[2
]}

Toda, Hiroyuki ^{[3
]}

Shimizu, Kazuyuki ^{[3
]}

Tsuru, Tomohito ^{[4
]}

Yamaguchi, Masatake ^{[4
]}

机构：

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

[2] Univ Toyama, Grad Sch Sci & Engn Res, Toyama, Japan

[3] Kyushu Univ, Dept Mech Engn, Fukuoka, Fukuoka, Japan

[4] Japan Atom Energy Agcy, Tokai, Ibaraki, Japan

来源：

MATERIALIA | 2018年 / 3卷

基金：

日本科学技术振兴机构;

关键词：

Al-Zn-Mg alloy; TEM imaging; Electron diffraction; Hydrogen; Microstructure;

D O I：

10.1016/j.mtla.2018.09.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure evolution of alloy with composition Al - 3.4 Zn - 1.9 Mg (at. %) was tracked using high resolution imaging and electron diffraction during ageing at 120 degrees C after being initially natural aged for 4 days. Hydrogen was charged in microstructure by cutting samples in Electrical Discharge Machine immediately after being quenched from solid solution temperature. Transmission Electron Microscope observations revealed a higher presence of high aspect ratio GPII-zones in microstructure of hydrogen charged and aged samples. Correlation was made with previously reported hydrogen effect into vacancy formation.

引用

页码：50 / 56

页数：7

共 31 条

[1] 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

[2] THE CRYSTAL STRUCTURE OF THE METALLIC PHASE MG32 (A1,ZN) [J].

BERGMAN, G ;

WAUGH, JLT ;

PAULING, L .

ACTA CRYSTALLOGRAPHICA, 1957, 10 (04) :254-259

[3] Hydrogen in aluminum [J].

Birnbaum, HK ;

Buckley, C ;

Zeides, F ;

Sirois, E ;

Rozenak, P ;

Spooner, S ;

Lin, JS .

JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 253 :260-264

[4] Characterization of H defects in the aluminium-hydrogen system using small-angle scattering techniques [J].

Buckley, CE ;

Birnbaum, HK ;

Lin, JS ;

Spooner, S ;

Bellmann, D ;

Staron, P ;

Udovic, TJ ;

Hollar, E .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2001, 34 :119-129

[5] HYDROGEN EMBRITTLEMENT AND TRAPPING IN AL-6-PERCENT-ZN-3-PERCENT-MG [J].

CHRISTODOULOU, L ;

FLOWER, HM .

ACTA METALLURGICA, 1980, 28 (04) :481-487

[6] FORMATION OF SUPERABUNDANT VACANCIES IN PD HYDRIDE UNDER HIGH HYDROGEN PRESSURES [J].

FUKAI, Y ;

OKUMA, N .

PHYSICAL REVIEW LETTERS, 1994, 73 (12) :1640-1643

[7] Formation of superabundant vacancies in metal hydrides at high temperatures [J].

Fukai, Y .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 231 (1-2) :35-40

[8] Formation of superabundant vacancies in M-H alloys and some of its consequences: a review [J].

Fukai, Y .

JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 356 :263-269

[9] AN ELECTRON MICROSCOPE INVESTIGATION OF MICROSTRUCTURE IN AN ALUMINUM-ZINC-MAGNESIUM ALLOY [J].

GJONNES, J ;

SIMENSEN, CJ .

ACTA METALLURGICA, 1970, 18 (08) :881-&

[10] Evolution of Grain Boundary Precipitates in Al 7075 Upon Aging and Correlation with Stress Corrosion Cracking Behavior [J].

Goswami, Ramasis ;

Lynch, Stanley ;

Holroyd, N. J. Henry ;

Knight, Steven P. ;

Holtz, Ronald L. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A (03) :1268-1278

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