scholarly journals Effects of Porosity and Pore Structure on Compression Properties of Blowing-Agent-Free Aluminum Foams Fabricated from Aluminum Alloy Die Castings

2012 ◽  
Vol 53 (8) ◽  
pp. 1515-1520 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Hiroki Kato ◽  
Takao Utsunomiya ◽  
Soichiro Kitahara ◽  
Osamu Kuwazuru ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Pore Structure ◽  
Aluminum Foams ◽  
Blowing Agent ◽  
Compression Properties ◽  
Die Castings

Study on Fabrication, Defects and Compression Properties of Al Foams at Different Foaming Temperatures

2011 ◽  
Vol 214 ◽  
pp. 70-74 ◽  
Author(s):  
Wei Min Zhao ◽  
Hui Zhang ◽  
Hai Peng Li ◽  
Zhi Feng Wang ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Pore Structure ◽  
Aluminum Foams ◽  
Foaming Agent ◽  
Compression Properties ◽  
Al Powder ◽  
Fabrication Defects ◽  
Lower Temperature ◽  
Foaming Temperature ◽  
Better Than ◽  
Al Foams

Using Al powder as thickening agent and CaCO3 powder as foaming agent, Al foams with above 85% porosity, pore sizes between 1mm and 4mm and relatively uniform pore structure have been fabricated by melt foaming method at different foaming temperatures. Meanwhile, the paper researched the effect of foaming temperature on foaming effect and analyzed the defects in Al foams. At last, compression test were taken in order to investigate the mechanical properties of aluminum foams. The results showed that pore structure, pore distribution and compression properties of Al foams fabricated at 720°C were much better than that fabricated at lower temperature.

scholarly journals Tensile Properties and Fracture Behavior of Aluminum Alloy Foam Fabricated from Die Castings without Using Blowing Agent by Friction Stir Processing Route

Materials ◽  
2014 ◽  
Vol 7 (3) ◽  
pp. 2382-2394 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Hiroto Kamada ◽  
Takao Utsunomiya ◽  
Soichiro Kitahara ◽  
Osamu Kuwazuru ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Tensile Properties ◽  
Friction Stir Processing ◽  
Fracture Behavior ◽  
Processing Route ◽  
Friction Stir ◽  
Blowing Agent ◽  
Die Castings

Closed-Cell Metal Foams Manufactured from Bulk Metal and Alloy Sheets through ARB Process

2005 ◽  
Vol 475-479 ◽  
pp. 433-436 ◽  
Author(s):  
Koichi Kitazono ◽  
Eiichi Sato
Keyword(s):  
Aluminum Alloy ◽  
Manufacturing Process ◽  
Aluminum Foam ◽  
Processing Condition ◽  
High Porosity ◽  
Aluminum Foams ◽  
Roll Bonding ◽  
Blowing Agent ◽  
Closed Cell ◽  
Aluminum Alloy Powder

Aluminum foams having extremely low densities offer a large potential for lightweight structural materials. New manufacturing process without expensive aluminum alloy powder has been developed using conventional bulk aluminum alloy sheets. Preform plate containing blowing agent particles is first manufactured through accumulative roll-bonding (ARB) process. By heating the preform plate, closed-cell aluminum foams having various porosity and cell morphology are produced. It was revealed that ARB processing condition is significantly important to produce suitable aluminum foam with high porosity and uniform pore distribution. Present manufacturing process also possesses a potential to apply to many other metal and alloy foams.

scholarly journals Effect of powder lubricants on surface quality of aluminum alloy die-castings.

2002 ◽  
Vol 52 (7) ◽  
pp. 303-307 ◽  
Author(s):  
Hitoshi YAE ◽  
Ryosuke KIMURA ◽  
Makoto YOSIDA ◽  
Gen SASAKI ◽  
Jin PAN ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Surface Quality ◽  
Die Castings

Compressive Properties of Open Cell Aluminum Foams

2005 ◽  
Vol 486-487 ◽  
pp. 472-475 ◽  
Author(s):  
Bo Young Hur ◽  
Bu Keoun Park ◽  
Sang Youl Kim ◽  
Hoon Bae
Keyword(s):  
Aluminum Alloy ◽  
Strain Curve ◽  
Elastic Response ◽  
Aluminum Foams ◽  
Plateau Region ◽  
Lower Yield Stress ◽  
Open Cell ◽  
Linear Elastic ◽  
Open Cell Foam ◽  
Uniaxial Compressive Test

The uniaxial compressive test results of several aluminum foams are compared with aluminum alloy and ppi (pore per inch) of open cell foam. The compressive stress-strain curve of aluminum alloy foams exhibits universal three deformation regions: an initial linear elastic response, and then extended plateau region with a nearly constant flow stress, a final densification as collapsed cells are compacted together. The lower the foam densities are, the longer the plateau region is, but lower densities also imply lower yield stress.

Nondestructive Quantitative Evaluation of Porosity Volume Distribution in Aluminum Alloy Die Castings by Fractal Analysis

2009 ◽  
Vol 40 (12) ◽  
pp. 2789-2793 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Shota Maruhashi ◽  
Soichiro Kitahara ◽  
Osamu Kuwazuru ◽  
Nobuhiro Yoshikawa
Keyword(s):  
Aluminum Alloy ◽  
Quantitative Evaluation ◽  
Fractal Analysis ◽  
Volume Distribution ◽  
Die Castings
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