Effect of ECAE on Structure and Strength of Porous A6061 Alloy with Aligned Unidirectional Pores

2014 ◽  
Vol 622-623 ◽  
pp. 148-154 ◽  
Author(s):  
Kotaro Suganuma ◽  
Tatsuro Hayashida ◽  
Takafumi Yuasa ◽  
Shinsuke Suzuki
Keyword(s):  
Aluminum Alloys ◽  
Base Metal ◽  
Deformation Behavior ◽  
Equal Channel Angular Extrusion ◽  
Pure Aluminum ◽  
Porous Aluminum ◽  
Sample Dimension ◽  
Before And After ◽  
Semi Solid ◽  
A6061 Alloy

Deformation behavior of porous aluminum alloys with aligned unidirectional pores through equal-channel angular extrusion (ECAE) was investigated. The porous aluminum alloys were fabricated by dipping pure aluminum pipes into semi-solid slurry base metal. The pipes did not detach from the base metal even through the ECAE process. Comparing the sample dimension of pores before and after ECAE process, the amount of decrease in a dimension of pores was 19.4% in this study. The Vickers hardness increased by work hardening. Especially, the hardness value of area where plastic flow arose increased significantly. These results show that we can improve the mechanical properties with maintenance of the porous structure and measure the amount of the sample deformation quantitatively.

316 Fabrication of porous aluminum alloys with unidirectional pores by dipping pipes in semi-solid slurry

2012 ◽  
Vol 2012.20 (0) ◽  
pp. _316-1_-_316-3_
Author(s):  
Ryuji TOYOYAMA ◽  
Tatsuro HAYASHIDA ◽  
Junichi ICHIKAWA ◽  
Shinsuke SUZUKI
Keyword(s):  
Aluminum Alloys ◽  
Porous Aluminum ◽  
Semi Solid

scholarly journals Fabrication of Porous Aluminum Alloys with Aligned Unidirectional Pores by Dipping Pipes into Liquid and Semi-solid base Metals

2014 ◽  
Vol 4 ◽  
pp. 85-89 ◽  
Author(s):  
Tatsuro Hayashida ◽  
Shinsuke Suzuki ◽  
Junichi Ichikawa ◽  
Ryuji Toyoyama
Keyword(s):  
Aluminum Alloys ◽  
Solid Base ◽  
Base Metals ◽  
Porous Aluminum ◽  
Semi Solid

Compressive Properties of Porous Aluminum Alloy Fabricated by Joining Pipes and Melt through Continuous Casting

2013 ◽  
Vol 761 ◽  
pp. 151-155 ◽  
Author(s):  
Junichi Ichikawa ◽  
Tatsuro Hayashida ◽  
Shinsuke Suzuki
Keyword(s):  
Aluminum Alloy ◽  
Continuous Casting ◽  
Base Metal ◽  
Pure Aluminum ◽  
Pure Aluminium ◽  
Compressive Properties ◽  
Porous Aluminum ◽  
Proof Strength ◽  
Compressive Tests

A porous aluminum alloy was fabricated by joining pure aluminum pipes and Al-13mass% Si melt through continuous casting. Compressive tests were carried out with test specimens of the porous aluminum alloy fabricated by this method, non-porous aluminum alloy fabricated by continuous casting using Al-Si melt, and porous aluminum alloy consisting of only Al-Si fabricated by drilling non-porous Al-Si bar. From the compressive tests, it was confirmed that specific proof strength of the porous aluminum alloy fabricated by joining pipes and melt can be described by rule of mixture of Al-Si base metal, pure aluminium pipes and pores.

Research Advance in Harmful Effects and Removal of Impurity Fe from Al and Al Alloys

2011 ◽  
Vol 295-297 ◽  
pp. 751-759 ◽  
Author(s):  
Hua Shen ◽  
Wei Dong Yang ◽  
He Liang ◽  
Guang Chun Yao
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloys ◽  
Pure Aluminum ◽  
Al Alloys ◽  
Precipitation Method ◽  
Filtration Method ◽  
Purification Methods ◽  
Research Advance ◽  
Harmful Effects

The presence of Fe and harmful effects on mechanical properties of pure aluminum and aluminum alloys are introduced. Several purification methods are reviewed, but all of them are of definite limitations. It is effective that precipitation method, filtration method and centrifugal division method are integrated.

Dissimilar Metal Welding of Steel to Al-Mg Alloy by Spot Resistance Welding

2006 ◽  
Vol 15-17 ◽  
pp. 381-386 ◽  
Author(s):  
I.H. Hwang ◽  
Takehiko Watanabe ◽  
Y. Doi
Keyword(s):  
Intermetallic Compound ◽  
Base Metal ◽  
Joint Strength ◽  
Pure Aluminum ◽  
Compound Layer ◽  
Interfacial Microstructure ◽  
Mg Alloy ◽  
Intermetallic Compound Layer ◽  
Commercially Pure ◽  
Insert Metal

We tried to join steel to Al-Mg alloy using a resistance spot welding method. The effect of Mg in Al-Mg alloy on the strength and the interfacial microstructure of the joint was investigated. Additionally, the effect of insert metal of commercially pure aluminum, which was put into the bonding interface, on the joint strength was examined. The obtained results were as follows. The cross-tensile strength of a joint between SS400 steel and commercially pure aluminum (SS400/Al) was high and fracture occurred in the aluminum base metal. However, the strength of a joint between SS400 and Al-Mg alloy was remarkably low and less than 30% of that of the SS400/Al joint. An intermetallic compound layer developed so thickly at the bonded interface of the SS400/Al-Mg alloy joint that the joint strength decreased. The intermetallic compound layer developed more thickly as Mg content in the Al-Mg alloy increased. Using insert metal of commercially pure aluminum containing little Mg successfully improved the strength of the SS400/Al-Mg alloy joint and the strength was equivalent to that of the base metal.

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