Effects of Hot Rolling Conditions on Warm Formability of Cast Magnesium Alloy Sheets Manufactured by Continuous Strip Casting Process

Effects of rolling conditions on warm deep drawability of cast magnesium alloy that were hot rolled after roll strip casting were investigated to ascertain the feasibility of twin-roll strip casting process of AZ31B magnesium alloy. Hot rolling and heat treatment conditions were changed to examine which conditions were appropriate for producing AZ31B wrought magnesium alloys after strip casting process. Microscopic observation of the crystals of the manufactured wrought magnesium alloys was performed. It has been found that a limiting drawing ratio of 2.7 was possible in a warm deep drawing test of the cast magnesium alloy sheets after being hot rolled.

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Forming Characteristics of Cast Magnesium Alloy Sheets Manufactured by Roll Strip Casting Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.274-276.379 ◽

2004 ◽

Vol 274-276 ◽

pp. 379-384 ◽

Cited By ~ 5

Author(s):

Hisaki Watari ◽

R. Paisarn ◽

Nobuhio Koga ◽

Ryoji Nakamura ◽

Keith Davey ◽

...

Keyword(s):

Magnesium Alloy ◽

Casting Process ◽

Strip Casting ◽

Forming Characteristics ◽

Cast Magnesium Alloy ◽

Cast Magnesium

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404 Hot forging of magnesium alloy plate produced by semi continuous strip casting process

The Proceedings of Ibaraki District Conference ◽

10.1299/jsmeibaraki.2015.23.135 ◽

2015 ◽

Vol 2015.23 (0) ◽

pp. 135-136

Author(s):

Masahiro SHIMIZU ◽

Yoshitaka SATO ◽

Yuki AKAIKE ◽

Humiya YAMANO ◽

Masaru HUJITA ◽

...

Keyword(s):

Magnesium Alloy ◽

Hot Forging ◽

Casting Process ◽

Strip Casting ◽

Alloy Plate ◽

Continuous Strip

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Formability of Magnesium Alloy Sheets Manufactured by Semi-Solid Roll Strip Casting

Materials Science Forum ◽

10.4028/www.scientific.net/msf.449-452.181 ◽

2004 ◽

Vol 449-452 ◽

pp. 181-184 ◽

Cited By ~ 8

Author(s):

Hisaki Watari ◽

Nobuhio Koga ◽

R. Paisarn ◽

Ryoji Nakamura

Keyword(s):

Magnesium Alloy ◽

Magnesium Alloys ◽

Casting Process ◽

Solid Material ◽

Strip Casting ◽

Drawing Ratio ◽

Iron And Steel ◽

Semi Solid ◽

Molten Magnesium ◽

Cast Magnesium

An experimental investigation was performed into the formability of magnesium alloy sheets that were hot-rolled after a semi-solid roll strip casting process. Semi-solid forming helps reduce the total product weight if the semi-solid material produced by light metals, such as aluminum and magnesium can be used to replace conventional iron and steel products. However, the problems of utilizing magnesium alloys are still related to high manufacturing costs. This means that improved quality must be balanced by economic validity. Magnesium alloy AZ31B was used in this experiment to ascertain the effectiveness of semi-solid roll strip casting for producing magnesium alloy sheets. The temperature of the molten magnesium, and the roll speeds of the upper and lower rolls, (which could be changed independently), were varied to find an appropriate manufacturing condition. Rolling conditions and heat treatment were changed to examine which condition would be appropriate for producing wrought magnesium alloys with good formability. Microscopic observation of the crystals of the finished products was performed. It has been found that a limiting drawing ratio of 2.4 was possible in a deep drawing process of the cast magnesium alloy sheets.

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Stability of the Structure of WE43 Cast Magnesium Alloy Welded Joints at Elevated Temperatures

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.229.105 ◽

2015 ◽

Vol 229 ◽

pp. 105-114 ◽

Cited By ~ 1

Author(s):

Agata Turowska ◽

Janusz Adamiec

Keyword(s):

Magnesium Alloy ◽

Elevated Temperatures ◽

Casting Process ◽

Strength Properties ◽

Large Size ◽

Cast Magnesium Alloy ◽

Cast Magnesium ◽

Fusion Weld ◽

Development Prospects ◽

Alloy Weld

The WE43 cast magnesium alloy is characterized by high development prospects due to its strength properties and maximum operating temperature of up to 250°C. It is used in the automotive and aircraft industries for engine, hull and gear parts. These are mainly individual or low-volume large-size casts, which in the casting process may display some defects in the form of misruns, shrinkage porosities and cracks. These defects are repaired with the application of welding technologies, which are also used to joint castings into structures and to repair castings after operation. The weld joint is an integral part of the structure. Therefore, it decides on the properties of the entire structure. It is important to get to know the microstructure and properties of magnesium alloy weld joints, and in particular those of the fusion weld. In this paper stability of the structure of WE43 cast magnesium alloy welded joint was researched.

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Mechanical Properties and Metallurgical Qualities of Magnesium Alloy Sheets Manufactured by Twin-Roll Casting

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.345-346.165 ◽

2007 ◽

Vol 345-346 ◽

pp. 165-168 ◽

Cited By ~ 17

Author(s):

Hisaki Watari ◽

Ryoji Nakamura ◽

R. Paisern ◽

Nobuhio Koga ◽

Keith Davey

Keyword(s):

Magnesium Alloy ◽

Casting Process ◽

Rolling Process ◽

Extrusion Process ◽

Strip Casting ◽

Drawing Ratio ◽

Magnesium Sheet ◽

Roll Casting ◽

Cast Magnesium ◽

Twin Roll

This paper is concerned with a manufacturing process and technology to facilitate the economical manufacture of high-quality magnesium alloy sheets. Magnesium alloys AZ31, AZ61, AM60 and AZ91 were used to investigate the appropriate anufacturing conditions for use in twin-roll strip casting. Temperatures of the molten materials and roll speeds were varied to find the appropriate manufacturing conditions. The effects of manufacturing conditions on possible forming were clarified in terms of roll speeds and roll gaps between upper and lower rolls. In addition, microscopic observation of the microstructure of the finished casting was performed. It was clarified that a magnesium sheet of 2.5 to 4.5mm thickness could be produced at a speed of 20 m/min by a horizontal copper roll caster. It was also found that the cast magnesium sheet of AZ31, AZ61, AM60 and AZ91 manufactured by roll strip casting could be used for plastic forming if the appropriate magnesium sheets were produced after the roll casting process. By a warm deep drawing test, it also demonstrated that a limiting drawing ratio of 2.4 was possible in the case of AZ91 sheet that was difficult to be manufactured by conventional extrusion process or DC casting and hot-rolling process for magesium alloy sheets with high aluminium contents.

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Effect of Section Thicknesses on Tensile Behavior and Microstructure of High Pressure Die Cast Magnesium Alloy AM50

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.463 ◽

2005 ◽

Vol 475-479 ◽

pp. 463-468 ◽

Cited By ~ 8

Author(s):

Ming Zhou ◽

Nai Yi Li ◽

Henry Hu

Keyword(s):

High Pressure ◽

Magnesium Alloy ◽

Casting Process ◽

Tensile Behavior ◽

Die Cast ◽

Cast Magnesium Alloy ◽

Die Casting Process ◽

Alloy Am50 ◽

Cast Magnesium ◽

Pressure Die Casting

High pressure die cast magnesium alloy AM50 is currently used extensively in complex shaped automotive components with various cross-section thicknesses. Understanding of the effect of section thicknesses on mechanical behavior of AM50 is critical for proper design of different applications. In the present study, magnesium alloy AM50 was high pressure die cast into rectangular coupons with section thicknesses of 2, 6 and 10 mm. The prepared coupons were tensile tested at room temperature. Microstructure analysis and porosity measurement were performed on the representative specimens. The results of tensile testing show that the tensile properties including yield strength (YS), ultimate tensile strength (UTS) and elongation(Ef) decreases with an increase in section thicknesses of die cast AM50. Microstructure and porosity analyses indicate that the observed tensile behavior of die cast AM50 is primarily attributed to the level of porosity which resulted from entrapped gases during the high pressure die casting process.

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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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