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stoichiometry of intermetallic phases

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005331
EISBN: 978-1-62708-187-0
... on the stoichiometry of intermetallic phases, and control of solidification conditions. The article discusses the modification and grain refinement of aluminum-silicon alloys by the use of modifiers and refiners to influence eutectic and hypereutectic structures in aluminum-silicon alloys. It provides information...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001102
EISBN: 978-1-62708-162-7
... K. (a) Tensile elongation. (b) Yield strength and fracture strength. Source: Ref 112 ) Fig. 15 Effect of stoichiometry on tensile properties of cast and extruded binary NiAl alloys. Nominal strain rate, 1.41 × 10 −3 /s. (a) Tested at room temperature. (b) Tested at 473 K. Source: Ref 106...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001348
EISBN: 978-1-62708-173-3
... ( Ref 53 ) describe bonding as being controlled by three metallurgical factors, which have been identified as bonds between solid-solution, two-phase, or intermetallic materials. Their studies involved bond-strength measurements and microstructural examination as a function of bonding conditions...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003164
EISBN: 978-1-62708-199-3
... Comparison of the creep behavior of conventional titanium alloys and titanium aluminide intermetallics Fig. 13 The binary iron-aluminum phase diagram Fig. 2 Crystal structures of nickel, iron, and titanium aluminides Fig. 1 Atomic arrangements of conventional alloys and ordered...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003837
EISBN: 978-1-62708-183-2
... to that in various intermetallic compounds. Lines are drawn for the chemical potentials for equilibrium between two phases. The equilibria between ions and insoluble oxides or hydroxides are unaltered by substrate ordering. Fig. 22 Electrochemical equilibrium diagram for nickel and aluminum showing...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003617
EISBN: 978-1-62708-182-5
... D,F R R … (Fe,Mo,Cr,Ni) 550–650 1020–1200 D Tau τ … … 550–650 1020–1200 R, R intermetallic phase. (a) Type code: A = austenitic, D = duplex, F = ferritic. (b) m.p., melting point. Source: Ref 39 Results of ASTM A 763, practice Z, on representative as-welded...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001286
EISBN: 978-1-62708-170-2
... films on oxide substrates ( Ref 27 ), or in intermetallic-forming metal-on-metal systems such as Au-Al and Al-U. In the case of Au-Al, the interdiffusion and reaction forms both Kirkendall voids and a brittle intermetallic phase termed “purple plague” that causes easy bond failure ( Ref 28 ). Table...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001768
EISBN: 978-1-62708-178-8
...). (b) The silicon (5 wt%) map shows the location of the silicate. (c) The iron (5 wt%) map reveals the metallic alloys. (d) The palladium (10 wt%) map indicates the intermetallic compound. The remaining titanate phases can be distinguished as pyrochlore by the uranium (10 wt%) map (e), hollandite...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006522
EISBN: 978-1-62708-207-5
.... , London , 1976 15. Birbilis N. and Buchheit R. , Electrochemical Characteristics of Intermetallic Phases in Aluminum Alloys and Experimental Survey and Discussion , J. Electrochem. Soc. , Vol 152 ( No. 4 ), 2005 , B140 – B151 10.1149/1.1869984 16. Altenpohl D...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001111
EISBN: 978-1-62708-162-7
.... In the case of Nb 3 Ge, additives are necessary to stabilize the A15 phase at stoichiometry. Aluminum and oxygen serve this purpose. Nb 3 (Al 0.75 Ge 0.25 ) has the highest B c2 of all the A15 compounds at 43.5 T (435 kG). A15 compounds are brittle and lack ductility. In all practical cases, the A15...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004148
EISBN: 978-1-62708-184-9
..., all the chemical additions to be discussed later are fully soluble. In the α phase there is only limited solid solution of oxygen, tin, and niobium. The transition metals (iron, chromium, and nickel) are almost nonsoluble in the α phase and form intermetallic precipitates, whose size distribution...
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
... ) … Slightly etched ( Ref 26 ) Bright gray, outlined ( Ref 26 ) … Slightly etched ( Ref 26 ) Not attacked ( Ref 5 ) … … … … … … Hardness of chosen intermetallic phases in aluminum alloys Table 19 Hardness of chosen intermetallic phases in aluminum alloys Phase Microhardness, HV (MN/m...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005574
EISBN: 978-1-62708-174-0
... the maximum solubilities of the secondary metal and oxygen in the base material. If Raoultian behavior of oxygen in the base material is assumed, the proportionality constants in Eq 5 and 6 become equal to 1. Then, knowing the stoichiometry of the oxide present and using the appropriate phase diagram...
Book Chapter

By S.L. Rohde
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001288
EISBN: 978-1-62708-170-2
... lattice expansions, increasing the internal stress of the films ( Ref 17 ). Additionally, inert-gas ion bombardment of the substrate/film couple using an applied negative-substrate bias can increase inert gas incorporation as well as alter the growth mode, stoichiometry, and properties of deposited films...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005948
EISBN: 978-1-62708-168-9
... of nickel, and, based on the stoichiometry of this phase, this depletion occurs at a ratio of three nickel atoms for every molybdenum atom. Because of its better fit with the bcc martensitic matrix, the formation of Ni 3 Mo is initially favored over that of Fe 2 Mo. As the orthorhombic Ni 3 Mo precipitates...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002473
EISBN: 978-1-62708-194-8
... in providing oxidation protection. Other high-temperature materials described include nickel and titanium aluminide intermetallics, refractory metals, and ceramics. Additional information on the oxidation resistance of other structural alloys, including chromia-forming ferrous alloys for industrial...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006421
EISBN: 978-1-62708-192-4
... In-situ interstitial Suitable for ferrous metals and titanium alloys Carbon and nitrogen used predominantly Improves tribological and fatigue properties Metallic Metallic materials alloyed on metallic substrates Immiscible metals can be cladded Hard intermetallic compounds and their fraction can...
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
... temper) 138–221 20–32 Source: Ref 37 Example of intermetallics formed during aging of wrought and cast aluminum alloys Table 5 Example of intermetallics formed during aging of wrought and cast aluminum alloys Alloys Intermetallic compounds Wrought 2 xxx Al-Cu(+Mg) CuAl...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001061
EISBN: 978-1-62708-162-7
... are typically in the T6 condition (highest strength with acceptable ductility). Fig. 1 Aluminum-silicon phase diagram and cast microstructures of pure components and of alloys of various compositions. Alloys with less than 12% Si are referred to as hypoeutectic, those with close to 12% Si as eutectic...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006287
EISBN: 978-1-62708-169-6
... containing manganese, iron and silicon also are present and form the quaternary phase Al 12 (Fe,Mn) 3 Si. There are a few intermetallic phases of binary systems that come into equilibrium with aluminum in the ternary alloys. These phases form simple, eutectiferous quasi-binary systems with aluminum...