scholarly journals Study on refine and morphology change of AlFeSi phase in A380 alloy by K addition

2020 ◽  
Vol 185 ◽  
pp. 04060
Author(s):  
Meng Wang
Keyword(s):  
Mechanical Property ◽  
Aluminum Alloys ◽  
Die Casting ◽  
Intermetallic Phases ◽  
Morphology Change ◽  
Casting Alloys ◽  
A380 Alloy ◽  
A380 Alloys ◽  
Aluminum Silicon

Aluminum-Silicon (Al-Si) alloys are one of the most widely used aluminum alloys. But iron can severely deteriorate the mechanical property of Al-Si diecasting alloy because its presence leads to the precipitation of different AlFeSi intermetallic phases which damage the ductility of alloys. Thus controlling the fraction and morphology of AlFeSi phase, especially the β-AlFeSi phase is important way to refine the ductility of Al-Si die casting alloys. In this article, K element was added into A380 alloys to study the effect of K on the morphology change of AlFeSi phase. The results show that a certain level of K addition 0.05-0.1 wt% will refine β-AlFeSi and transform β-AlFeSi phase to α-AlFeSi. In addition, K addition can better refine AlFeSi at high ccoling rates. The mechanism of refinement of K on AlFeSi phase is analyzed.

The Effect of Alloying Elements on Thermal Conductivity of Aluminum Alloys in High Pressure Die Casting

2013 ◽  
Vol 813 ◽  
pp. 175-178 ◽  
Author(s):  
Cheol Woo Kim ◽  
Jae Ik Cho ◽  
Se Weon Choi ◽  
Young Chan Kim
Keyword(s):  
Thermal Conductivity ◽  
Aluminum Alloys ◽  
Die Casting ◽  
Pure Aluminum ◽  
High Thermal Conductivity ◽  
Alloying Elements ◽  
Alloying Element ◽  
Casting Alloys ◽  
Pressure Die Casting ◽  
Effect Of Alloying

Recently, demand of aluminum alloys for manufacturing in components with high thermal conductivity application increases. However, the most aluminum die casting alloys exhibit very lower thermal properties, about only a half of pure aluminum. In die casting alloys, alloying elements are essential to obtain sufficient fluidity and mechanical strength, therefore, in this study, the effect of alloying elements, Si, Cu, Mg, Fe and Mn, on thermal conductivity, die casting characteristics and mechanical properties were analyzed and the appropriate amount of each alloying element were investigated. The results showed that Mn had the most deleterious effect in thermal conductivity and Si and Fe contents were important to improve fluidity and strength. The alloy with 1.5~2.0wt.%Si and 0.6wt.%Fe showed very good combination of high thermal conductivity and sufficient casting characteristics.

Optimization of Aluminium Die Casting Alloys for Enhanced Properties

2009 ◽  
Vol 618-619 ◽  
pp. 601-605 ◽  
Author(s):  
L. Wang ◽  
Diran Apelian ◽  
M.M. Makhlouf
Keyword(s):  
Chemical Composition ◽  
Quality Index ◽  
Die Casting ◽  
Casting Alloy ◽  
Alloy Development ◽  
Compositional Range ◽  
Casting Alloys ◽  
A380 Alloy ◽  
Wide Range ◽  
Development Processes

Selecting an aluminum die casting alloy for a particular application often poses a challenge to designers and engineers. It is often difficult and sometimes not possible to find an alloy that meets all the requirements of the application; and in other times the alloy can be found, but it has a wide specified compositional range, and thus it exhibits a large variation in properties. Therefore, there is always a need to optimize existing alloys or to develop new alloys so that they meet the requirements of a given application. In order to help with the alloy selection and alloy development processes, we developed an electronic database for aluminum die casting alloys – i-Select-Al. This software can help its user to quickly select an alloy for a specific application from a comprehensive list of commercial alloys. Alternatively, it can help its user with the design of a new alloy to meet the requirements of the application. This paper presents a study in optimizing A380 alloy with the help of i-Select-Al. A380 alloy is the most commonly used die casting alloy, but it has a wide compositional range and therefore a wide range of properties. In this study, we optimized the mechanical properties of A380 alloy by optimizing its chemical composition. The Quality Index was used to quantify the changes in the alloys’ properties in response to changes in chemical composition. Two alloys were designed: one has a composition within the A380 alloy specification, and the other has a composition slightly outside the A380 alloy specification. Both alloys showed significant improvements in room temperature tensile properties and a substantial increase in the Quality Index over a commercially available A380 alloy.

Effects of Physical Melt Treatments on Microstructural Evolution and Anodizing Characteristics of Al-Si Casting Alloys

2011 ◽  
Vol 695 ◽  
pp. 243-246 ◽  
Author(s):  
Je Sik Shin ◽  
Bong Hwan Kim ◽  
Sang Mok Lee
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
Aluminum Alloys ◽  
Die Casting ◽  
Microstructural Feature ◽  
Casting Alloys ◽  
Melt Treatment ◽  
Twin Screw ◽  
A356 Aluminum ◽  
Pressure Die Casting

In order to investigate the effects of physical melt treatment on microstructural feature and anodizing characteristics of Al-Si system casting alloys, A380 and A356 aluminum alloys were chosen and a twin-screw melt-shearing process was utilized before high pressure die casting. In order to refine and homogenize the microstructure of the diecast Al-Si alloys, the melt-shearing process parameters were controlled and T6 heat treatment was carried out.

Evolution of Intermetallic Phases in Soldering of the Die Casting of Aluminum Alloys

2016 ◽  
Vol 47 (6) ◽  
pp. 2609-2615 ◽  
Author(s):  
Jie Song ◽  
Xiaoming Wang ◽  
Tony DenOuden ◽  
Qingyou Han
Keyword(s):  
Aluminum Alloys ◽  
Die Casting ◽  
Intermetallic Phases

scholarly journals Hypoeutectic Al-Si Alloy with Cr, V and Mo to Pressure Die Casting

2017 ◽  
Vol 17 (1) ◽  
pp. 153-156
Author(s):  
T. Szymczak ◽  
G. Gumienny ◽  
I. Stasiak ◽  
T. Pacyniak
Keyword(s):  
Crystallization Process ◽  
Die Casting ◽  
Intermetallic Phases ◽  
Casting Alloys ◽  
Large Size ◽  
Master Alloys ◽  
Dta Curves ◽  
Die Castings ◽  
Pressure Die Casting ◽  
Made In

Abstract This paper presents the results of hypoeutectic 226 grade alloy as well as prepared on its basis Al-Si alloy containing Cr, V and Mo. The additives tested were added as AlCr15, AlV10 and AlMo8 master alloys. Alloys tested were poured into DTA sampler as well as using pressure die casting. An amount of Cr, V and Mo additives in alloy poured into DTA sampler comprised within the range approximately 0.05-0.35%. Alloys to pressure die casting contained 0.05-0.20% Cr, V and Mo. The crystallization process was examined using the derivative thermal analysis (DTA). The microstructure of castings made in the DTA sampler as well as castings made with use of pressure die casting were examined. The basic mechanical properties of castings made using pressure die casting were defined too. It has been shown in the DTA curves of Al-Si alloy containing approximately 0.30 and 0.35% Cr, Mo, and V there is an additional thermal effect probably caused by a peritectic crystallization of intermetallic phases containing the aforementioned additives. These phases have a morphology similar to the walled and a relatively large size. The analogous phases also occur in pressure die casting alloys containing 0.10% or more additions of Cr, V and Mo. The appearance of these phases in pressure die casting Al-Si alloys coincides with a decrease in the value of the tensile strength Rm and the elongation A. It has been shown die castings made of Al-Si alloys containing the aforementioned additives have a higher Rm and A than 226 alloy.

ALUMINUM 360 and A360

Alloy Digest ◽  
1961 ◽  
Vol 10 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Aluminum Alloys ◽  
Die Casting ◽  
Heat Treating ◽  
Good Corrosion Resistance ◽  
Casting Alloys ◽  
Temperature Performance ◽  
Aluminum Company

Abstract Aluminum Alloys 360 and A360 are die casting alloys having good strength, good corrosion resistance, and excellent castability. Alloy A360 is a purer form of Alloy 360, having lower impurity maximums. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: Al-103. Producer or source: Aluminum Company of America.

COPPER ALLOY No. 878

Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Copper Alloy ◽  
Die Casting ◽  
Heat Treating ◽  
Casting Alloys ◽  
Copper Zinc ◽  
Die Castings ◽  
Very High

Abstract Copper Alloy No. 878 is a copper-zinc-silicon alloy for die castings. Among the brass die-casting alloys, it has the highest strength, hardness and wear resistance; however, it is the most difficult to machine. It is used where very high requirements must be met for strength and wear resistance. Its many applications include tools, pump impellers, gears and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-386. Producer or source: Copper alloy producers.

AS41A, AS41B

Alloy Digest ◽  
2018 ◽  
Vol 67 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Die Casting ◽  
Good Combination ◽  
Casting Alloys

Abstract AS41A and AS41B are die casting alloys with a good combination of ductility and strength. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as casting and joining. Filing Code: Mg-82. Producer or source: Multiple producers.

AISI TYPE P20

Alloy Digest ◽  
1982 ◽  
Vol 31 (1) ◽  
Keyword(s):  
Low Temperature ◽  
Tool Steel ◽  
Die Casting ◽  
Heat Treating ◽  
High Quality ◽  
Medium Carbon ◽  
Casting Alloys ◽  
Steel Mills ◽  
Aisi Type ◽  
Quality Tool

Abstract AISI Type P20 is a chromium-molybdenum tool steel of medium carbon content. It usually is supplied in the prehardened condition (about 300 Brinell) so that the cavity can be machined and the mold or die placed directly in service; however, for some uses further treatments are employed. It is produced to high-quality tool-steel standards to permit a high luster to be achieved on the surface of the polished die cavity. P20 is used for molds for plastics and for die-casting dies for zinc and other low-temperature casting alloys. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: TS-393. Producer or source: Tool steel mills.

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