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

Bendo, A.*; Matsuda, Kenji*; Lee, S.*; Nishimura, Katsuhiko*; Toda, Hiroyuki*; Shimizu, Kazuyuki*; Tsuru, Tomohito ; Yamaguchi, Masatake

Microstructure evolution of alloy with composition Al-3.4Zn-1.9 Mg (at. %) was tracked using high resolution imaging and electron diffraction during ageing at 120 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.

Language	:	English
Journal	:	Materialia
Volume	:	3
Number	:
Pages	:	p.50 - 56
Publication Year/Month	:	2018/11
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Paper URL	:	https://doi.org/10.1016/j.mtla.2018.09.035
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Keywords	:	no keyword
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Cooperating Institute	:	科学技術振興機構

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Registration No. : AA20180661
JAEA Abstracts No. : 47000590
Paper Submission No. : 21222

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