Effect of Qualitative and Quantitative Ratios of Rare-Earth Elements in a New Fireproof Cast Magnesium Alloy

In this paper, a summary of investigations of the microstructure of cast magnesium matrix composites is presented. Analyses of the interfaces between the reinforcing particles and the magnesium alloy matrices were performed. Technically pure magnesium and four various alloys with aluminum and rare earth elements (RE) were chosen as the matrix. The composites were reinforced with SiC and Ti particles, as well as hollow aluminosilicate cenospheres. Microstructure analyses were carried out by light, scanning, and transmission electron microscopy. The composites with the matrix of magnesium and magnesium–aluminum alloys with SiC and Ti particles exhibited coherent interfaces between the components. In the composites based on ternary magnesium alloy with Al and RE with Ti particles, a high-melting Al2RE phase nucleated on the titanium. Different types of interfaces between the components were observed in the composites based on the magnesium–rare earth elements alloy with SiC particles, in which a chemical reaction between the components caused formation of the Re3Si2 phase. Intensive chemical reactions between the components were also observed in the composites with aluminosilicate cenospheres. Additionally, the influence of coatings created on the aluminosilicate cenospheres on the bond with the magnesium matrix was presented. A scheme of the types of interfaces between the components is proposed.

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Segregation behavior and its regulating process in as-cast magnesium alloy containing heavy rare earth

Journal of Rare Earths ◽

10.1016/j.jre.2021.08.009 ◽

2021 ◽

Author(s):

Xin Tong ◽

Guoqiang You ◽

Fanjin Yao ◽

Mahmoud Ebrahimi ◽

Xinyue Deng ◽

...

Keyword(s):

Rare Earth ◽

Magnesium Alloy ◽

Heavy Rare Earth ◽

Segregation Behavior ◽

Cast Magnesium Alloy ◽

Cast Magnesium

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MAGNESIUM MSR-B

Alloy Digest ◽

10.31399/asm.ad.mg0063 ◽

1967 ◽

Vol 16 (6) ◽

Keyword(s):

Corrosion Resistance ◽

Shear Strength ◽

High Temperature ◽

Magnesium Alloy ◽

Yield Strength ◽

Physical Properties ◽

Heat Treating ◽

Temperature Performance ◽

Cast Magnesium Alloy ◽

Cast Magnesium

Abstract Magnesium MSR-B is a heat-treatable magnesium alloy with highest yield strength of any cast magnesium alloy up to 480 F. It is pressure tight and weldable by argon-arc. It is recommended for aircraft nose wheels, missile components, transmission cases, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Mg-63. Producer or source: Magnesium Elektron Ltd.

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MAGNESIUM MSR-A

Alloy Digest ◽

10.31399/asm.ad.mg0052 ◽

1962 ◽

Vol 11 (7) ◽

Keyword(s):

Compressive Strength ◽

Corrosion Resistance ◽

High Temperature ◽

Magnesium Alloy ◽

Yield Strength ◽

Physical Properties ◽

Heat Treating ◽

Temperature Performance ◽

Cast Magnesium Alloy ◽

Cast Magnesium

Abstract Magnesium MSR-A is a heat-treatable magnesium alloy with highest yield strength of any cast magnesium alloy up to 480 F. It is pressure tight and weldable by argon-arc. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and joining. Filing Code: Mg-52. Producer or source: J. Stone & Company Ltd.

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