An experimental study of porosity formation in long-freezing-range A206 alloy plate and taper castings

Cast Metals ◽  
1995 ◽  
Vol 8 (1) ◽  
pp. 21-26
Author(s):  
Sen-Tien Kao ◽  
Edward Chang ◽  
S. C. Horng
Keyword(s):  
Experimental Study ◽  
Freezing Range ◽  
Porosity Formation ◽  
Alloy Plate ◽  
A206 Alloy

Study of Solidus Velocity on Porosity Formation in A201 Aluminum Alloy Castings

2013 ◽  
Vol 705 ◽  
pp. 223-227
Author(s):  
Y.S. Kuo
Keyword(s):  
Aluminum Alloy ◽  
Silica Sand ◽  
Systematic Change ◽  
Porosity Formation ◽  
Alloy Plate ◽  
Aluminum Alloy Plate ◽  
Alloy Castings ◽  
Different Thickness

The purpose of the present study was to discuss the effects of solidus velocity on porosity formation of A201 aluminum alloy plate castings. With systematic change in the riser size, together with variation of thickness and length, were cast in sand molds. The sand molds with end chill for the plate castings were made of 100% silica sand. The porosity content of A201 aluminum alloy was affected by the solidus velocity in this study. The correlation between porosity content and solidus velocity is found to be split into 2 bands, each being associated with one of the different thickness of plate castings.

Study of Solidification Time and Solidus Velocity on Porosity Formation in High Strength Aluminum Alloy Castings

2014 ◽  
Vol 575 ◽  
pp. 442-445
Author(s):  
Yeong Sant Kuo
Keyword(s):  
Aluminum Alloy ◽  
High Strength ◽  
Solidification Time ◽  
Local Solidification Time ◽  
Silica Sand ◽  
Systematic Change ◽  
Porosity Formation ◽  
Alloy Plate ◽  
High Strength Aluminum Alloy ◽  
Alloy Castings

The purpose of the present study was to discuss the effects of local solidification time and solidus velocity on porosity formation in high strength aluminum alloy casting. With systematic change in the riser size, together with variation of thickness and length, A201 aluminum alloys were cast in 100% silica sand molds. The porosity content of A201 aluminum alloy was affected by the local solidification time and solidus velocity in this study. The correlation between porosity content and solidification time is found to be split into 2 bands, each being associated with one of the two thicknesses of plate castings. The longer the solidification time, the more the porosity content was measured in the A201 aluminum alloy plate casting. And the faster the solidus velocity, the more the porosity content in this study. The porosity content of A201 aluminum alloy was influenced by both of solidification time and solidus velocity at same time in this study. Basically, shorter local solidification time with slow solidus velocity seems get lower porosity content in A201 aluminum alloy castings.

Experimental Study of Bond Behavior on Aluminum Alloy Plate-to-Concrete Interface

2014 ◽  
Vol 501-504 ◽  
pp. 805-810 ◽  
Author(s):  
Ji Hua Zhu ◽  
Liang Liang Wei ◽  
Miao Chang Zhu ◽  
Wei Wen Li ◽  
Feng Xing
Keyword(s):  
Experimental Study ◽  
Aluminum Alloy ◽  
Bond Strength ◽  
Bond Length ◽  
Failure Modes ◽  
Coupling Effect ◽  
Experimental Program ◽  
Alloy Plate ◽  
Aluminum Alloy Plate ◽  
Concrete Interface

This paper presents an experimental study on the bond performance of aluminum alloy plate-to-concrete interface via a series of simple shear test. The parameters examined include the bond length and width of the aluminum alloy plates. Two types of failure modes were observed through the experimental program. The test results demonstrate the bond strength of the aluminum plate-to-concrete interface depends strongly on the coupling effect of bond length and width. The variation of the aluminum strain distribution along the bond length against the applied load clearly illustrates the existence of an effective bond length. The load-slip curves show that the bond width has more sensitive effect to the bond strength.

Study of Thermal Gradient on Porosity Formation in A201 Aluminum Alloy Plate Castings

2012 ◽  
Vol 248 ◽  
pp. 9-13
Author(s):  
Yeong Sant Kuo
Keyword(s):  
Aluminum Alloy ◽  
Thermal Gradient ◽  
System Change ◽  
Porosity Formation ◽  
Alloy Plate ◽  
Aluminum Alloy Plate

This study is to with system change the riser size and the casting geometry to find out the relation between thermal gradient and porosity formation in A201 aluminum alloy plate casting, which is discussed in this study. The results show that the porosity content was found to be relevant to the thermal gradient and riser system. The larger the thermal gradient (G), the lower the porosity content was found in this study.

Experimental study on Ti alloy plate fabrication by vacuum selective laser melting

2016 ◽  
Author(s):  
Yuji Sato ◽  
Masahiro Tsukamoto ◽  
Yorihiro Yamashita ◽  
Shinichiro Masuno ◽  
Nobuyuki Abe
Keyword(s):  
Experimental Study ◽  
Selective Laser Melting ◽  
Ti Alloy ◽  
Laser Melting ◽  
Alloy Plate

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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