Microstructure and corrosion behavior of die-cast AM60B magnesium alloys in a complex salt solution: A slow positron beam study

The present work presents a comparative study of FSW die cast AM50 Mg alloy. The main focus is the effect of the FSW metallurgy on the corrosion behavior of the alloy. AC and DC polarization tests were carried out on the FSW Mg alloys. The microstructure was examined using electron microscopy (SEM).

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THE INFLUENCE OF ANODIZED FILM ON CORROSION BEHAVIOR OF MAGNESIUM ALLOYS

International Journal of Modern Physics B ◽

10.1142/s0217979206040180 ◽

2006 ◽

Vol 20 (25n27) ◽

pp. 3674-3679 ◽

Cited By ~ 1

Author(s):

LIQUN BAI ◽

MIN GUO ◽

DI LI ◽

JIANGANG QIAN ◽

BAOLAN GUO

Keyword(s):

Magnesium Alloy ◽

Magnesium Alloys ◽

Corrosion Behavior ◽

Corrosion Mechanism ◽

Casting Method ◽

Protection Effect ◽

Die Cast ◽

Cast Magnesium Alloys ◽

Alloy Microstructure ◽

Cast Magnesium

The influence of anodized film on corrosion and electrochemical behavior of extruded magnesium alloy AZ63, cast and die-cast magnesium alloys AZ91D were investigated by using immersion technique, electrochemical methods, SEM, EDAX, IR and XRD. The results showed anodized film could improve remarkably corrosion resistance. Protection effect was different with the same anodizing process because formation status of anodized film of different materials was different. The formation status of anodized film was related to alloy microstructure as revealed by optical and scanning electron microscopy. The formatting process and casting method strongly influences the corrosion performance by affecting on the alloy microstructure. A tentative corrosion mechanism is presented explaining the corrosion behavior of anodized magnesium alloy.

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(DURIP98/99) Slow Positron Beam for Material and Surface Characterization

10.21236/ada382678 ◽

2000 ◽

Author(s):

Yanching C. Jean ◽

Thomas C. Sandreczki

Keyword(s):

Surface Characterization ◽

Positron Beam ◽

Slow Positron

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Long Term Creep Properties of a Die-Cast Mg-Al-Ca Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.163 ◽

2007 ◽

Vol 561-565 ◽

pp. 163-166

Author(s):

Yoshihiro Terada ◽

Tatsuo Sato

Keyword(s):

Creep Rate ◽

Magnesium Alloys ◽

Cast Alloy ◽

Rupture Life ◽

Testing Temperature ◽

Creep Rupture ◽

Die Cast ◽

Cast Magnesium Alloys ◽

Term Creep ◽

Cast Magnesium

Creep rupture tests were performed for a die-cast Mg-Al-Ca alloy AX52 (X representing calcium) at 29 kinds of creep conditions in the temperature range between 423 and 498 K. The creep curve for the alloy is characterized by a minimum in the creep rate followed by an accelerating stage. The minimum creep rate (ε& m) and the creep rupture life (trup) follow the phenomenological Monkman-Grant relationship; trup = C0 /ε& m m. It is found for the AX52 die-cast alloy that the exponent m is unity and the constant C0 is 2.0 x 10-2, independent of creep testing temperature. The values of m and C0 are compared with those for another die-cast magnesium alloys. The value m=1 is generally detected for die-cast magnesium alloys. On the contrary, the value of C0 sensitively depends on alloy composition, which is reduced with increasing the concentration of alloying elements such as Al, Zn and Ca.

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