Outputs (21)

Transient Rheological Behavior of Semisolid SEED-Processed 7075 Aluminum Alloys in Rapid Compression (2018)
Journal Article

© 2018, The Author(s). The transient rheological behavior and microstructure evolution of semisolid SEED-processed 7075 aluminum alloys were studied using the rapid compression tests. The effects of the TiB2 grain refinement on the grain morphology a... Read More about Transient Rheological Behavior of Semisolid SEED-Processed 7075 Aluminum Alloys in Rapid Compression.

Tensile deformation behavior of Al-Cu 206 cast alloys near the solidus temperature (2016)
Presentation / Conference Contribution

© 2017 Trans Tech Publications, Switzerland. To study the micromechanics of semisolid deformation, a modified experimental set-up is employed in Gleeble 3800 thermomechamical testing unit to achieve a uniform temperature distribution in partially rem... Read More about Tensile deformation behavior of Al-Cu 206 cast alloys near the solidus temperature.

Effects of Iron-Rich Intermetallics and Grain Structure on Semisolid Tensile Properties of Al-Cu 206 Cast Alloys near Solidus Temperature (2016)
Journal Article

© 2016, The Minerals, Metals & Materials Society and ASM International. The effects of iron-rich intermetallics and grain size on the semisolid tensile properties of Al-Cu 206 cast alloys near the solidus were evaluated in relation to the mush micr... Read More about Effects of Iron-Rich Intermetallics and Grain Structure on Semisolid Tensile Properties of Al-Cu 206 Cast Alloys near Solidus Temperature.

Microstructure and rheological properties of semi-solid 7075 slurries using SEED rheocasting process (2016)
Presentation / Conference Contribution

© 2016 Trans Tech Publications, Switzerland. The SEED rheocasting process was used to produce semisolid slurries of high strength 7075 aluminum wrought alloys. The effects of the SEED processing parameters on the microstructure of semisolid slurries... Read More about Microstructure and rheological properties of semi-solid 7075 slurries using SEED rheocasting process.

Study on dimensional and corrosion properties of thixoformed A356 and AA7075 aluminum bipolar plates for proton exchange membrane fuel cells (2014)
Journal Article

Metallic bipolar plates for polymer exchange membrane (PEM) fuel cells are currently manufactured by stamping of thin sheets. However, there are dimensional and shape errors of microchannels because of forming limitation such as spring back of thin s... Read More about Study on dimensional and corrosion properties of thixoformed A356 and AA7075 aluminum bipolar plates for proton exchange membrane fuel cells.

Thixoforging of wrought aluminum thin plates with microchannels (2014)
Journal Article

A direct die-filling thixoforging method is designed to fabricate aluminum thin plates with a pattern of microchannels in a single forming operation. Extruded AA2024 and AA7075 wrought aluminum billets are used. A recrystallization and partial remelt... Read More about Thixoforging of wrought aluminum thin plates with microchannels.

Effect of forming conditions on mechanical properties of rheoformed thin plates with microchannels using electromagnetic stirring (2014)
Journal Article

Rheoforming is a near net-shape manufacturing technology for fabricating components from light alloys in their semisolid states with improved mechanical properties. In this work, a feasibility study on the fabrication of Silafont 36 aluminum thin pla... Read More about Effect of forming conditions on mechanical properties of rheoformed thin plates with microchannels using electromagnetic stirring.

Semisolid forming of thin plates with microscale features (2014)
Presentation / Conference Contribution

© 2014 The Authors. Published by Elsevier Ltd. Thin plates (150 × 150 × 1.2 mm) with embedded corrugation are fabricated using semisolid forming. The die cavity used in the forming is designed using fluid analysis. A semisolid slurry is prepared by a... Read More about Semisolid forming of thin plates with microscale features.

Thin-plate forming by thixo- and rheoforging (2014)
Journal Article

Copyright © 2014 Chul Kyu Jin et al. Thin plates with a thickness of 1.2 mm are fabricated using two processes, thixoforging and rheoforging, which are semisolid forming techniques. The die design, formability, microstructure, and mechanical properti... Read More about Thin-plate forming by thixo- and rheoforging.

Mechanical properties and microstructure of thin plates of A6061 wrought aluminum alloy using rheology forging process with electromagnetic stirring (2013)
Presentation / Conference Contribution

We propose the possibility of fabricating A6061 thin plates using the rheology forging process. Electromagnetic stirring (EMS) is used to fabricate a semi-solid slurry. A thin plate is formed by injecting the slurry into the forging die. When the pun... Read More about Mechanical properties and microstructure of thin plates of A6061 wrought aluminum alloy using rheology forging process with electromagnetic stirring.

The effect of billets extruded by a curved and flat-face die on the semisolid characteristics and tensile properties of thixoformed products (2013)
Journal Article

In this study, A356 aluminum billets in different extruded states are used as feedstock for the thixoforming. The extrusion billets were fabricated by a hot extrusion process through a flat-face and a curved die. After the induction reheating of the... Read More about The effect of billets extruded by a curved and flat-face die on the semisolid characteristics and tensile properties of thixoformed products.

Processing of low-carbon cast steels for offshore structural applications (2013)
Journal Article

Cast steels with carbon contents of approximately 0.05%, 0.1%, and 0.2% (low-carbon steels) were processed. The investigated steels were first cast. Fully lath martensite was obtained after austenitization and water quenching of the cast steels. The... Read More about Processing of low-carbon cast steels for offshore structural applications.

Rheoforging of thin case for IT devices with optimal process parameters and new type die design (2013)
Journal Article

The latest trend in the cell phone component industry to use aluminium and magnesium alloys has resulted in the advanced processing technologies. Semi-solid forming process that is advantageous for the mass production of thin parts with complex shape... Read More about Rheoforging of thin case for IT devices with optimal process parameters and new type die design.

Characteristics of thixoformed A356 aluminum thin plates with microchannels (2013)
Journal Article

A356 aluminum thin plates with a thickness of 1.2 mm were produced via thixoforming process under different temperatures ranging from 585°C to 610°C. In addition to large primary α-Al grains, unique fine secondary α-Al grains (equivalent diameter bel... Read More about Characteristics of thixoformed A356 aluminum thin plates with microchannels.

Thixoforming A356 aluminum bipolar plates at high solid fractions (2013)
Journal Article

Thixoforming investigations have been developed primarily for the manufacturing of bulk components, and the current knowledge is very limited with respect to the fabrication of thin cross sections of alloys. We studied the effectiveness of thixoformi... Read More about Thixoforming A356 aluminum bipolar plates at high solid fractions.

Tensile properties and microstructural characteristics of indirect rheoformed A356 aluminum alloy (2012)
Journal Article

The effects of rheoforming parameters such as the rheoforming temperature and pressure on the tensile properties of H-shaped components were examined. An H-shaped component is useful for practical investigation into the influence of different wall th... Read More about Tensile properties and microstructural characteristics of indirect rheoformed A356 aluminum alloy.

The effect of heat treatment on the mechanical properties of a low carbon steel (0.1%) for offshore structural application (2012)
Journal Article

In this study, a low carbon cast steel (0.1% C) alloy designed for offshore structures, and the mechanical properties of the alloy under different heat treatment cycles have been evaluated. The effect of austenitizing time on the austenite grain size... Read More about The effect of heat treatment on the mechanical properties of a low carbon steel (0.1%) for offshore structural application.

Coarsening of equiaxed microstructure in the semisolid state of aluminum 7075 alloy through SIMA processing (2011)
Journal Article

In the present study, the coarsening mechanism of equiaxed grains in the semisolid state of aluminum 7075 alloy, treated via strain induced melting activation process, was investigated. The kinetics of equiaxed grain growth in the semisolid state of... Read More about Coarsening of equiaxed microstructure in the semisolid state of aluminum 7075 alloy through SIMA processing.

Correlation between solid fraction and tensile properties of semisolid RAP processed aluminum alloys (2011)
Journal Article

Recrystallization and remelting (RAP), a promising route for thixoforming process, was used to process three aluminum alloys, AA2024, AA6061, and A356, under experimental conditions designed to yield various solid fractions (liquid fractions) within... Read More about Correlation between solid fraction and tensile properties of semisolid RAP processed aluminum alloys.

A study on semisolid processing of A356 aluminum alloy through vacuum-assisted electromagnetic stirring (2011)
Journal Article

In this study, a vacuum-assisted electromagnetic stirring system was designed and manufactured in order to minimize the defects such as porosities in the semisolid processing A356 aluminum alloy by electromagnetic stirring (EMS). A sleeve cooling sys... Read More about A study on semisolid processing of A356 aluminum alloy through vacuum-assisted electromagnetic stirring.