Mechanical and corrosion properties of biodegradable Mg-1.5Mn-1Ca-xSr alloys

The mechanical properties and corrosion mechanism of both as-cast and solution-naturally age (T4) treated Mg-1.5Mn-1Ca-xSr alloys were investigated. The results showed that Sr is helpful to decrease grain size and increase the strength. The corrosion process of alloys was mainly determined by the qu...

Full description

Saved in:

Bibliographic Details
Published in:	IOP conference series. Materials Science and Engineering 2017-03, Vol.182 (1), p.12049
Main Authors:	Sun, X, Sun, S Y, Ning, Y H, Ning, Y T
Format:	Article
Language:	eng
Subjects:	Biodegradability Biodegradable Corrosion Corrosion effects Corrosion mechanisms Corrosion resistance Corrosion resistant alloys Grain size Localized corrosion Magnesium base alloys Mechanical properties Microstructure Phases Strontium T4 treatment
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The mechanical properties and corrosion mechanism of both as-cast and solution-naturally age (T4) treated Mg-1.5Mn-1Ca-xSr alloys were investigated. The results showed that Sr is helpful to decrease grain size and increase the strength. The corrosion process of alloys was mainly determined by the quantity and distribution of second phases. Mg17Sr2, α-Mn and Ca-Sr phases acted as cathodes accelerated the corrosion of Mg2Ca anodic phase and α-Mg matrix. However, continuous distributed Mg17Sr2 was beneficial to resist the happening of localized corrosion because of its barrier effect. T4 treatment could significantly improve the mechanical properties and corrosion resistance of Mg alloys because of the dissolution of Mg2Ca phase and the dispersive distribution of Mg17Sr2 and α-Mn phases.
ISSN:	1757-8981 1757-899X