Controlling mechanical and physical properties of Al-Si alloys by controlling grain size through grain refinement and electromagnetic stirring

2013 ◽  
Vol 220 (1) ◽  
pp. 139-150 ◽  
Author(s):  
V. Metan ◽  
K. Eigenfeld
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Grain Refinement ◽  
Electromagnetic Stirring ◽  
Mechanical And Physical Properties

Mechanical and Physical Properties of Nano-Metals

2010 ◽  
Vol 654-656 ◽  
pp. 1110-1113
Author(s):  
Małgorzata Lewandowska ◽  
Andrzej Zagórski ◽  
Krzysztof Jan Kurzydlowski
Keyword(s):  
Thermal Stability ◽  
Physical Properties ◽  
Grain Refinement ◽  
Single Phase ◽  
Wide Spectrum ◽  
Corrosion And Wear ◽  
Aluminium Copper ◽  
Mechanical And Physical Properties ◽  
Extensive Research Program ◽  
Fatigue Corrosion

In the present work, an extensive research program has been undertaken to characterise a wide spectrum of properties of nano-metals. In particular, the effect of grain refinement on such properties as fatigue, corrosion and wear resistance, conductivity and thermal stability has been studied for various nano-metals (aluminium, copper and iron alloys). The results have revealed that nano-grain refinement also improves physical properties of single phase metals. A disadvantageous effect of large (micron sized) particles, which do not undergo refinement during the processing, has been also recognized.

Effect of Vertical Electromagnetic Stirring on the Grain Refinement of A356 Aluminum Alloy Inoculated by Al-5Ti-B

2006 ◽  
Vol 116-117 ◽  
pp. 344-349 ◽  
Author(s):  
Zhao Yang ◽  
J.W. Bae ◽  
C.G. Kang
Keyword(s):  
Grain Size ◽  
Grain Refinement ◽  
A356 Alloy ◽  
Electromagnetic Stirring ◽  
A356 Aluminum Alloy ◽  
X Ray ◽  
Stirring Time ◽  
A356 Aluminum ◽  
Tib2 Particles ◽  
Aluminum Phase

In this paper, the influence of electromagnetic stirring on the grain size of A356 alloy inoculated by Al-5Ti-B was investigated. It is found that when stirring is applied at the same time with Al-5Ti-B, the inoculation effect will be disabled. X-ray determination and SEM observation show that stirring hinders the deposition of TiB2 particles; consequently hinder the formation of TiAl3 particles, which were proved to be the nucleus of primary α aluminum phase. If the stirring time is short, the grain size will be abnormally coarse. This experiment also confirms that the grain refinement of rheocasting is caused by dendrite fracture instead of modified nucleation.

Effects of AlN Particles and Electromagnetic Stirring on As-Cast Structure of AZ31 Alloys

2011 ◽  
Vol 675-677 ◽  
pp. 771-774 ◽  
Author(s):  
Song Wei Gu ◽  
Hai Hao ◽  
Can Feng Fang ◽  
Shou Hua Ji ◽  
Xing Guo Zhang
Keyword(s):  
Grain Size ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Grain Growth ◽  
Magnesium Alloys ◽  
Electromagnetic Stirring ◽  
Grain Refiner ◽  
Cast Structure ◽  
Fine Grain ◽  
Refinement Mechanism

A fine grain size generally leads to improved structural uniformity of magnesium alloys. AlN has been identified as a potential grain refiner and electromagnetic stirring may have great effects on microstructure and grain growth. This study will be focused on the effects of AlN particles and electromagnetic stirring on the as-cast structure of AZ31 alloys.The grain refinement mechanism of both methods on magnesium alloy and their interaction effects are also discussed.

Grain size control in Al–Si alloys by grain refinement and electromagnetic stirring

2009 ◽  
Vol 487 (1-2) ◽  
pp. 163-172 ◽  
Author(s):  
V. Metan ◽  
K. Eigenfeld ◽  
D. Räbiger ◽  
M. Leonhardt ◽  
S. Eckert
Keyword(s):  
Grain Size ◽  
Grain Refinement ◽  
Size Control ◽  
Electromagnetic Stirring ◽  
Grain Size Control

Study of the Grain Refinement Technology by Electromagnetic Stirring for IN100 Superalloy Vacuum Investment Casting

2011 ◽  
Vol 189-193 ◽  
pp. 3789-3794 ◽  
Author(s):  
Wen Zhong Jin ◽  
Wei Zhang ◽  
Ting Ju Li ◽  
Guo Mao Yin
Keyword(s):  
Grain Size ◽  
Tensile Properties ◽  
Grain Refinement ◽  
Investment Casting ◽  
Room Temperature ◽  
Optical Microscope ◽  
Electromagnetic Stirring ◽  
Structures And Properties ◽  
Equiaxed Grains ◽  
Equiaxed Grain

The effects of rotating electromagnetic stirring and inoculants on the solidification structures and properties of IN100 superalloy vacuum investment casting was studied with XRD, SEM and optical microscope. The results show that by initiating the 50Hz, 150A rotating electromagnetic stirring as soon as the molten metal was poured into the mould, which was coated with inoculant CoAl2O4, the average equiaxed grain size of IN100 superalloy vacuum investment casting can be refined to 95μm and the fraction of equiaxed grains can be increased to 99 %. On condition that the grain size of K417 superalloy vacuum investment casting were refined to 95μm, the tensile properties at room temperature, the morphology of （γ＋γ′）eutectic and the morphology of dendrites can be greatly improved.

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

HAYNES ALLOY No. 625SQ

Alloy Digest ◽  
2003 ◽  
Vol 52 (8) ◽  
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Fatigue Resistance ◽  
Heat Treating ◽  
Temperature Performance ◽  
Haynes Alloy

Abstract Haynes 625SQ alloy is a modification of Haynes 625 alloy (see Alloy Digest Ni-354, January 1988) with tighter controls on chemistry and a finer grain size for fatigue resistance up to 680 deg C (1250 deg F). This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance as well as heat treating. Filing Code: Ni-612. Producer or source: Haynes International Inc.

BLACK DIAMOND STANDARD

Alloy Digest ◽  
1975 ◽  
Vol 24 (1) ◽  
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tool Steel ◽  
Electric Furnace ◽  
Heat Treating ◽  
Case Depth ◽  
Specialty Metals ◽  
Lower Carbon

Abstract BLACK DIAMOND STANDARD is an electric-furnace-melted, water-hardening carbon tool steel with an excellent reputation for use as the standard in general shop tools requiring extreme toughness and resistance to shock and impact. In the lower carbon ranges (0.50-0.70% carbon), it is used primarily for tools such as pins, punches, hammers and sledges. Black Diamond may be expected to give uniform and consistent results, although no definite limits of case depth or grain size are regularly guaranteed. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-281. Producer or source: Crucible Specialty Metals Division, Colt Industries.

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