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Microstructures and Mechanical Properties of Melt Extruded Al-Cu Alloys
- Source :
- Solid State Phenomena. :635-638
- Publication Year :
- 2006
- Publisher :
- Trans Tech Publications, Ltd., 2006.
-
Abstract
- Melt extrusion is a new fabrication process with the characteristics of both casting and extrusion. In this process, a metallic melt which is poured and solidified up to semisolid state in the container can be directly extruded through the die exit to form a product of bar shape without other intermediate processes. The effects of various process parameters, such as melt temperature and extrusion ratio, on the extrusion behavior of Al-Cu alloys in the semisolid state were investigated. Mechanical properties of the melt extruded Al-Cu alloy were measured and its characteristics are compared with the microstructure and copper contents in the alloy. Al-Cu alloys were successfully extruded after squeezing out of liquid during the melt extrusion with smaller force (60 Mpa) compared to the solid extrusion. Al-Cu alloys bar with the mean grain size of 200 μm was fabricated by melt extrusion; however, the mechanical properties have nothing to do with the extrusion ratio. The squeezing out of liquid was get lead to the segregation of the alloys and was affect on the mechanical properties.
- Subjects :
- Fabrication
Materials science
business.product_category
Metallurgy
Alloy
chemistry.chemical_element
engineering.material
Condensed Matter Physics
Microstructure
Copper
Casting
Atomic and Molecular Physics, and Optics
Grain size
chemistry
engineering
Die (manufacturing)
General Materials Science
Extrusion
business
Subjects
Details
- ISSN :
- 16629779
- Database :
- OpenAIRE
- Journal :
- Solid State Phenomena
- Accession number :
- edsair.doi...........8f2dabb6d7d2b5cc8756dfd54191764e