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aluminum-silicon eutectic system

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Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006225
EISBN: 978-1-62708-163-4
.... The article describes the aluminum-silicon eutectic system and the lead-tin eutectic system. It discusses eutectic morphologies in terms of lamellar and fibrous eutectics, regular and irregular eutectics, and the interpretation of eutectic microstructures. The article examines the solidification of a binary...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005212
EISBN: 978-1-62708-187-0
... Abstract This article illustrates the equilibrium phase diagram for an aluminum-silicon system, showing the metastable extensions of liquidus and solidus lines. It describes the classification and microstructure of the aluminum-silicon eutectic. The article presents the theories...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005215
EISBN: 978-1-62708-187-0
...-copper and aluminum-silicon; binary peritectic systems: copper-zinc; multicomponent eutectic systems: Al-Si-Cu-Mg; and for systems with both eutectic and peritectic reactions: Fe-C-Cr and nickel-base superalloy. microsegregation nickel-base superalloy solute redistribution equilibrium...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003727
EISBN: 978-1-62708-177-1
... Abstract The most common aluminum alloy systems are aluminum-silicon, aluminum-copper, and aluminum-magnesium. This article focuses on the grain structure, eutectic microstructure, and dendritic microstructure of these systems. It provides information on microsegregation and its problems...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005301
EISBN: 978-1-62708-187-0
... Abstract This article focuses on aspects that are important for the commercial production of castings. It discusses the modification process in hypoeutectic and eutectic alloys that differ only in the relative volume fraction of primary aluminum and aluminum-silicon eutectic. The article...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003124
EISBN: 978-1-62708-199-3
... structural alloys. Silicon This element is also a ubiquitous impurity in commercial aluminum alloys. Two ternary phases, cubic αAl 12 Fe 3 Si and monoclinic β-Al 9 Fe 2 Si 2 , form by a eutectic reaction. At low silicon contents, almost all of the iron is present as Al 3 Fe. With increasing silicon...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003769
EISBN: 978-1-62708-177-1
... to determine the maximum levels for ancillary element additions of certain elements to prevent the crystallization of coarse primary particles. Eutectic Reaction The aluminum-copper diagram ( Fig. 3 ) and the aluminum-silicon diagram ( Fig. 6 ) are two examples of simple eutectic systems. Using...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003790
EISBN: 978-1-62708-177-1
... eutectic is often entrapped within the primary solid phase. This phenomenon is clearly seen in Fig. 16 ( Ref 14 ). This microstructure is typical of a 356 aluminum alloy formed using an indirect semisolid metalworking process. The structure consists of primary α-aluminum particles in an aluminum-silicon...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006496
EISBN: 978-1-62708-207-5
.... Table 1 lists the freezing range of a number of important alloys. Most aluminum casting alloys contain silicon as the major alloying element, because silicon forms a eutectic with aluminum at 11.7% Si. Typical silicon levels and freezing ranges of popular casting alloys are: In long-freezing-range...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005211
EISBN: 978-1-62708-187-0
... the second half of the 20th century have enabled improvements in the processing of eutectic metallic systems. Presently, commercially important metallic alloy systems used for casting engineering components are predominantly eutectic systems. Aluminum-silicon, aluminum-copper, and iron-carbon systems...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005190
EISBN: 978-1-62708-187-0
... that increase T st and decrease T met , such as silicon, aluminum, nickel, and copper ( Fig. 17 ) Weak graphitizers that decrease both T st and T met but increase the T st − T met interval overall, such as phosphorus and arsenic ( Fig. 17 ) Strong carbide stabilizers that decrease T st...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003085
EISBN: 978-1-62708-199-3
... such as iron and cementite; or several metals such as aluminum, magnesium, and manganese. These substances constitute the components comprising the system and should not be confused with the various phases found within the system. A system, however, also can consist of a single component, such as an element...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006388
EISBN: 978-1-62708-192-4
... hardening), to modify the eutectic structures (e.g., the silicon eutectic morphology in aluminum-silicon alloys), and to refine the grain structure. The effects of the main alloying elements are listed as follows. Boron (B) Boron (B) is generally added for grain-refinement purposes. It can be used...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005903
EISBN: 978-1-62708-167-2
... the pouring properties and reduces shrinkage during solidification. Magnesium provides good grinding and polishing properties and improved resistance to corrosion. Copper raises strength and hardness, particularly together with magnesium and zinc. Fig. 27 Aluminum-silicon system. Source: Ref 34...
Image
Published: 01 January 1990
Fig. 35 Projection of the eutectic lines on the 1200 °C (2190 °F) isothermal section of the titanium-aluminum-silicon system. Source: Ref 284 More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005230
EISBN: 978-1-62708-187-0
... that will not dissolve completely in the matrix. Thermal modification often results in fragmentation and subsequent spheroidization of phases that are present in excess of their solid solubility limit. For example, in the case of common aluminum-silicon-base cast alloys, the large, unmodified eutectic silicon flakes...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001450
EISBN: 978-1-62708-173-3
... or the physical removal of the oxide layer. Brazing Filler Metals Brazing filler metal alloy compositions can be grouped into four categories. The first and largest group is eutectic-type alloys that have aluminum, nickel, cobalt, or copper as a base, to which silicon/boron (in the case of aluminum...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006295
EISBN: 978-1-62708-179-5
... Metast. Stable Metast. Stable Metast. Stable Silicon –10 to –15 +2.5 8 0–30 –10 to –20 +4 –3.25 10.91 –12.1 +5.4 Copper –2 5.2 … –10 –2.3 5 –3.32 8.41 –2.9 +6.4 Aluminum –14 8 10 10 –15 8 –7.74 0.91 +4.8 +44.4 Nickel –4.8 4 –20 –30 –6 4 –1.33 6.5...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006551
EISBN: 978-1-62708-210-5
... of aluminum can be improved by microconstituents (such as ceramics or primary silicon in aluminum-silicon casting alloys). Alloys containing greater-than-eutectic silicon concentrations have a primary-silicon phase that imparts excellent wear resistance. Wear resistance in these alloys occurs with a large...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006509
EISBN: 978-1-62708-207-5
... intensifies the age-hardening response Aluminum-magnesium-silicon systems with strengthening from GP zones and transition precipitates of the Mg 2 Si equilibrium phase Aluminum-zinc-magnesium systems with strengthening from GP zones and transition precipitates (η′) of the MgZn 2 (η) equilibrium phase...