scholarly journals Microstructural change during the deformation at elevated temperature in some magnesium alloys

1961 ◽  
Vol 11 (5) ◽  
pp. 342-354 ◽  
Author(s):  
Yotaro MURAKAMI ◽  
Toshio ENJO ◽  
Hiroshi KUBO
Keyword(s):  
Elevated Temperature ◽  
Magnesium Alloys ◽  
Microstructural Change

The Intermetallic Phases in Sand Casting Magnesium Alloys for Elevated Temperature

2011 ◽  
Vol 690 ◽  
pp. 214-217 ◽  
Author(s):  
Andrzej Kiełbus ◽  
Tomasz Rzychoń
Keyword(s):  
Solid Solution ◽  
Elevated Temperature ◽  
Grain Boundaries ◽  
Magnesium Alloys ◽  
Solution Structure ◽  
Intermetallic Phase ◽  
Intermetallic Phases ◽  
Phase Identification ◽  
Al Alloy ◽  
Cast Microstructure

In the present article, the phase identification of four magnesium alloys: Mg-9wt%Al, Mg-8wt%Al-2wt%Ca-0.5wt%Sr, Mg-5wt%Y-4wt%RE and Mg-3wt%Nd-1wt%Gd were studied. The results showed that Mg-9wt%Al alloy contains only the Mg17Al12 intermetallic phase in α-Mg matrix. As-cast microstructure of Mg-8wt%Al-2wt%Ca-0.5wt%Sr alloy consist of α-Mg matrix with (Al,Mg)2Ca and (Al,Mg)4Sr phases. The Mg-5wt%Y-4wt%RE alloy showed several phases. This alloy was characterized by a solid solution structure α-Mg with eutectic α-Mg + Mg14Y2Nd on grain boundaries. The precipitates of MgY, Mg2Y, Mg24Y5 phases have been also observed. The Mg-3wt%Nd-1wt%Gd alloy composed mainly of a solid solution structure α-Mg with eutectic α-Mg + Mg3(Nd,Gd) on the grain boundaries. The regular precipitates of MgGd3 phase have been also observed.

Research Progress of Mg-Al Based Alloys

2013 ◽  
Vol 750-752 ◽  
pp. 583-586 ◽  
Author(s):  
Xiao Jie Song ◽  
Quan An Li ◽  
San Ling Fu ◽  
Wen Jian Liu ◽  
Zhi Chen
Keyword(s):  
Elevated Temperature ◽  
Magnesium Alloys ◽  
Future Development ◽  
Metal Structure ◽  
Research Progress ◽  
Creep Characteristics ◽  
Development Direction ◽  
The Future ◽  
The Way

Magnesium alloys as the emerging commercial metal structure material have excellent specific properties and stability, which is more and more vital for researcher. This paper reviews the creep characteristics and the way to enhance the elevated temperature properties of Mg-Al based alloys. The current Mg-Al based alloys (including AZ, AM, AS, AE, etc.) are summarized. The future development direction is pointed.

Research Progress of Mg-Re Alloys

2014 ◽  
Vol 937 ◽  
pp. 178-181 ◽  
Author(s):  
Quan An Li ◽  
Wen Chuang Liu ◽  
Xiao Jie Song
Keyword(s):  
Rare Earth ◽  
Elevated Temperature ◽  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Future Development ◽  
Metal Structure ◽  
Research Progress ◽  
Low Density ◽  
Development Direction ◽  
The Future

Magnesium alloys as the emerging commercial metal structure material have excellent specific properties, low density, and stability, which are more and more vital for researchers. This paper reviews the behavior of rare earth in magnesium alloy and the way to enhance the elevated temperature properties of Mg-RE alloys. The current Mg-RE alloys are summarized. The future development direction is pointed.

Observation of Microstructural Refinement in Mg-3Sn-2Ca Magnesium Alloy Containing Minor Sr

2011 ◽  
Vol 686 ◽  
pp. 271-275
Author(s):  
Ming Bo Yang ◽  
Cai Yuan Qin ◽  
Xiao Feng Liang ◽  
Fu Sheng Pan
Keyword(s):  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Volume Fraction ◽  
Microstructural Change ◽  
Microstructural Refinement ◽  
Undercooling Degree

The microstructures of the Mg-3Sn-2Ca magnesium alloys with and without adding minor Sr were investigated and compared. The results indicate that adding 0.1 wt.% Sr to the Mg-3Sn-2Ca alloy can effectively refine the primary CaMgSn phases and grains. In addition, in the alloy containing minor Sr the volume fraction of the primary and eutectic CaMgSn phases appears to be decreased, whereas the volume fraction of the Mg2Ca precipitates seems to be increased. The mechanism for the microstructural change in the alloy containing minor Sr is possibly related to the effects of Sr additions on the onset crystallizing temperature and undercooling degree.

Flow stress modeling of AZ91 magnesium alloys at elevated temperature

2011 ◽  
Vol 509 (15) ◽  
pp. 4992-4998 ◽  
Author(s):  
B.K. Raghunath ◽  
K. Raghukandan ◽  
R. Karthikeyan ◽  
K. Palanikumar ◽  
U.T.S. Pillai ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Flow Stress ◽  
Magnesium Alloys ◽  
Stress Modeling ◽  
Az91 Magnesium
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