Effect of hydrogen on stress corrosion cracking of magnesium alloy in 0.1 M Na2SO4 solution

The effect of hydrogen on stress corrosion cracking (SCC) of an as-cast MgAl9Zn1 magnesium alloy was investigated using slow strain rate test (SSRT). The results showed that hydrogen diffused to interior of matrix, enriched and formed hydride at beta phase that caused the cracking of beta phase. Mic...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2008-08, Vol.488 (1-2), p.428-434
Hauptverfasser:	Chen, Jian, Wang, Jianqiu, Han, Enhou, Ke, Wei
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Exact sciences and technology Fractures Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The effect of hydrogen on stress corrosion cracking (SCC) of an as-cast MgAl9Zn1 magnesium alloy was investigated using slow strain rate test (SSRT). The results showed that hydrogen diffused to interior of matrix, enriched and formed hydride at beta phase that caused the cracking of beta phase. Micro-cracks initiated at beta phase and combined into main crack. The main crack propagated by coalescence of the existing micro-cracks ahead. It was indicated that hydrogen embrittlement was the main mechanism for the SCC of MgAl9Zn1 alloy.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2007.11.035