Deep-cryogenic-treatment-induced phase transformation in the Al-Zn-Mg-Cu alloy

An aluminum alloy （Al-Zn-Mg-Cu） subjected to deep cryogenic treatment （DCT） was systematically investigated. The results show that a DCT-induced phase transformation varies the microstructures and affects the mechanical properties of the Al alloy. Both Guinier-Preston （GP） zones and a metastableη′ph...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	International journal of minerals, metallurgy and materials metallurgy and materials, 2015, Vol.22 (1), p.68-77
Hauptverfasser:	Li, Chun-mei, Cheng, Nan-pu, Chen, Zhi-qian, Guo, Ning, Zeng, Su-min
Format:	Artikel
Sprache:	eng
Schlagworte:	Al-Zn-Mg-Cu系合金 Alloy systems Aluminum ALUMINUM ALLOYS (50 TO 99 AL) Aluminum base alloys Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Composites Copper Corrosion and Coatings Cryogenic treatment DCT Electron microscopy First principles Glass Guinier Preston zone High resolution electron microscopy Magnesium Materials Science MATHEMATICAL ANALYSIS MECHANICAL PROPERTIES Metallic Materials Microstructure MICROSTRUCTURES Natural Materials Phase transformations Phase transitions Precipitation PROPERTIES Surfaces and Interfaces Thin Films Tribology Zinc 低温处理深冷处理电子显微镜观察相变第一性原理计算诱导
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An aluminum alloy （Al-Zn-Mg-Cu） subjected to deep cryogenic treatment （DCT） was systematically investigated. The results show that a DCT-induced phase transformation varies the microstructures and affects the mechanical properties of the Al alloy. Both Guinier-Preston （GP） zones and a metastableη′phase were observed by high-resolution transmission electron microscopy. The phenomenon of the second precipitation of the GP zones in samples subjected to DCT after being aged was observed. The viability of this phase transfor-mation was also demonstrated by first-principles calculations.
ISSN:	1674-4799 1869-103X
DOI:	10.1007/s12613-015-1045-7