High Strength-High Damping Capacity Wrought Magnesium Alloys

In recent days, the use of Magnesium and its alloys is preferred in defence, automotive and aerospace industries where large size and complex components are required in light weight. Besides, magnesium alloys are used in computers, electronic devices and biomedical applications. Alloying magnesium with rare earth elements (RE) is used to develop the light alloys for the stated applications at elevated temperature. Rare earth magnesium alloys are having unique properties over other metals, including a high specific strength, low thermal conductivity, good damping capacity and good castability. In this review article, the recent development of rare earth magnesium alloys will be reviewed from the view point of novel alloying designs. It has been revealed that in ternary alloy system Mg-ZN-RE alloy exhibited high strength and ductility. This leads the researchers to investigate Mg-ZN-RE alloy recently.

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Processing and Characterization of Magnesium Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.488-489.401 ◽

2005 ◽

Vol 488-489 ◽

pp. 401-404

Author(s):

Hwa Chul Jung ◽

Kwang Seon Shin

Keyword(s):

Mechanical Properties ◽

Magnesium Alloys ◽

Physical And Mechanical Properties ◽

High Strength ◽

Casting Process ◽

World Market ◽

Damping Capacity ◽

Corrosion Properties ◽

Research Activities

Magnesium has the lowest density among the commercially available structural metals and its superior physical and mechanical properties make magnesium alloys extremely attractive for applications requiring lightweight, good castability and damping capacity. In recent years, due to the demand for lightweight magnesium components in the automobile and electronic industries, the world market for magnesium alloys has increased rapidly. At the same time, the research activities on manufacturing process and characterization of magnesium alloys have also increased significantly. The research activities have been concentrated on many different fields, including the development of high pressure die casting process and semi-solid processing, development of high strength wrought alloys and components, and characterization of microstructure, mechanical properties as well as corrosion properties. In this article, the recent progresses achieved in these research areas at Seoul National University will be introduced.

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Mechanical Properties and Damping Behavior of Magnesium Alloys Processed by Equal Channel Angular Pressing

Materials Science Forum ◽

10.4028/www.scientific.net/msf.539-543.1685 ◽

2007 ◽

Vol 539-543 ◽

pp. 1685-1690 ◽

Cited By ~ 5

Author(s):

Ming Yi Zheng ◽

Xiao Shi Hu ◽

Shi Wei Xu ◽

Xiao Guang Qiao ◽

Kun Wu ◽

...

Keyword(s):

Magnesium Alloys ◽

Equal Channel Angular Pressing ◽

High Strength ◽

Pure Magnesium ◽

Damping Capacity ◽

High Ductility ◽

Ecap Processing ◽

Angular Pressing ◽

Damping Behavior ◽

Strength And Ductility

Equal channel angular pressing (ECAP) was applied to commercial pure magnesium alloy, Mg-1wt%Si alloy and Mg-4.2wt%Zn-0.7wt%Y alloy. With increasing ECAP passes, both tensile strength and ductility of the alloys are increased, which are mainly resulted from the grain refinement. At the same time, for the Mg-Zn-Y alloy with inherent low damping capacity, damping capacity is increased after ECAP passes, however, the damping capacity is still low even after 6-pass ECAP. While for the commercial pure magnesium and Mg-Si alloy with inherent high damping capacity, although the damping capacity is decreased obviously after ECAP, Q-1 is still greater than 0.01. The damping capacity after ECAP processing is mainly influenced by grain size and deformation microstructure. ECAP paves a way for the development of magnesium alloys with high strength and high ductility combined with high damping capacity.

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MEEHANITE GD

Alloy Digest ◽

10.31399/asm.ad.ci0032 ◽

1964 ◽

Vol 13 (1) ◽

Keyword(s):

Fracture Toughness ◽

Shear Strength ◽

Cast Iron ◽

Physical Properties ◽

Tensile Properties ◽

High Strength ◽

Heat Treating ◽

Damping Capacity ◽

Iron And Steel ◽

Lubricating Properties

Abstract MEEHANITE-GD is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on casting, heat treating, machining, and joining. Filing Code: CI-32. Producer or source: Meehanite Metal Corporation.

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MEEHANITE GA

Alloy Digest ◽

10.31399/asm.ad.ci0005 ◽

1954 ◽

Vol 3 (1) ◽

Keyword(s):

Fracture Toughness ◽

Shear Strength ◽

Cast Iron ◽

Physical Properties ◽

Machine Tools ◽

High Strength ◽

Heat Treating ◽

Damping Capacity ◽

Iron And Steel ◽

Lubricating Properties

Abstract MEEHANITE GA is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. Applications include machine tools, gears, shafts, and housings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on heat treating and machining. Filing Code: CI-5. Producer or source: Meehanite Metal Corporation.

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NIVCO-10

Alloy Digest ◽

10.31399/asm.ad.co0037 ◽

1964 ◽

Vol 13 (6) ◽

Keyword(s):

Fracture Toughness ◽

Precipitation Hardening ◽

Turbine Blades ◽

High Strength ◽

Heat Treating ◽

Damping Capacity ◽

High Ductility ◽

Westinghouse Electric Corporation ◽

Westinghouse Electric ◽

Cobalt Base

Abstract Nivco 10 is a cobalt-base turbine alloy having a combination of high damping capacity, high strength and high ductility. It is a precipitation hardening alloy recommended for use at temperatures up to 1200 F, such as turbine blades. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: Co-37. Producer or source: Westinghouse Electric Corporation.

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