1-20 of 55 Search Results for

spinodal decomposition

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 December 2004
Fig. 2 Regions of spinodal decomposition and classical nucleation and growth of precipitates. (a) Phase diagram with a miscibility gap. (b) Variation in free energy with composition for the system shown in (a) at temperature T ′. Source: Ref 2 More
Book Chapter

Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006229
EISBN: 978-1-62708-163-4
... decomposition has been particularly useful in the production of permanent magnet materials, because the morphologies favor high magnetic coercivities. It also describes the theory of spinodal decomposition with a simple binary phase diagram. alloy phases binary phase diagram chemical composition...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003732
EISBN: 978-1-62708-177-1
...Abstract Abstract Spinodal transformation is a phase-separation reaction that occurs from kinetic behavior. This article discusses the theory of spinodal decomposition, and outlines the methods used in the characterization of spinodal structures in metal matrices. microstructure spinodal...
Image
Published: 01 December 2004
Fig. 7 Backscatter scanning electron micrograph of an iron-copper alloy that was rapidly solidified after undergoing liquid-phase spinodal decomposition. Source: Ref 5 More
Image
Published: 01 December 2004
Fig. 1 Two sequences for the formation of a two-phase mixture by diffusion processes. (a) Classical nucleation and growth. (b) Spinodal decomposition. Source: Adapted from Ref 1 , 2 More
Image
Published: 01 December 2004
Fig. 4 Miscibility gap. Region 1: homogenous α is stable. Region 2: homogenous α is metastable, only incoherent phases can nucleate. Region 3: homogeneous α metastable, coherent phases can nucleate. Region 4: homogeneous α unstable, spinodal decomposition occurs. Source: Ref 4 More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003730
EISBN: 978-1-62708-177-1
... nucleation and growth (e.g., spinodal decomposition). To further complicate the classification of the transformations, crystallography influences most transformations (e.g., pearlite, bainite, martensite, and precipitation). Christian ( Ref 1 ) has classified solid-state transformations according...
Image
Published: 01 January 1996
Fig. 21 Electron micrographs of aged type 308 weld. (a) Aged at 475 ° C for 1000 h, showing mottled structure indicative of spinodal decomposition of the δ-ferrite and extensive G-phase precipitation. (b) Aged at 475 °C for 4950 h, showing M 23 C 6 carbides at austenitic-ferrite interface More
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001763
EISBN: 978-1-62708-178-8
... for interpreting the scattering from multicomponent materials undergoing phase separation depends on the assumed mechanism, that is, nucleation and growth versus spinodal decomposition. Because nucleation involves the formation of nuclei and growth at random locations within the material, Eq 4 can be used...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000619
EISBN: 978-1-62708-181-8
... by quasi-cleavage. SEM, 600× Fig. 906 Tensile-overload fracture in a fracture-toughness specimen of 64Cu-27Ni-9Fe alloy that underwent spinodal decomposition during heat treatment for 10 h at 775 °C (1425 °F). The surface contains many intergranular facets with intervening regions of dimpled...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006250
EISBN: 978-1-62708-169-6
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006276
EISBN: 978-1-62708-169-6
..., are hardenable by spinodal decomposition, a mechanism that provides high strength and good ductility through the homogeneous formation of a periodic array of coherent, fcc solid-solution phases. Each of these alloys, including the beryllium-coppers, can be thermomechanically processed to provide unique...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006277
EISBN: 978-1-62708-169-6
... the β-phase matrix ( Ref 7 , 8 , 9 ), pseudospinodal decomposition ( Ref 7 , 8 , 9 ), and spinodal decomposition of intermediate α phase obtained via congruent β → α transformation ( Ref 10 ). These TPs provide ample opportunities to engineer desired microstructures in terms of size, shape...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005410
EISBN: 978-1-62708-196-2
..., this transformation cannot proceed through the continuous development of growing infinitesimal perturbations delocalized in the whole phase, that is, by spinodal decomposition ( Ref 13 , 14 ). Such perturbations in a metastable state increase the free energy. As a consequence, they can appear because of thermal...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001772
EISBN: 978-1-62708-178-8
... of such phenomena as surface and interface segregation, ordering, clustering, precipitation, and spinodal decomposition. However, their interpretation necessitates care because of the three-dimensionality of the sample. This is illustrated in Fig. 19 , with reference to analysis across an interphase interface...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002404
EISBN: 978-1-62708-193-1
... °F (474 °C) embrittlement, which is common to ferritic steels with high chromium ( Ref 102 ), is operative in the δ-ferrite because its composition is similar to that of a ferritic steel. This mechanism, also known as α′ embrittlement, results from the spinodal decomposition of δ-ferrite into low...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003731
EISBN: 978-1-62708-177-1
...-ray diffraction studies). Guinier-Preston (GP) zones are solute-rich clusters resulting from phase separation or precipitation within a metastable miscibility gap in the alloy system. They may form by homogeneous nucleation and grow at small undercoolings or by spinodal decomposition at large...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006274
EISBN: 978-1-62708-169-6
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001094
EISBN: 978-1-62708-162-7
... in stages to maximize directional magnetic properties in the final shape. The nature of the phase diagram, the periodicity of the microstructure and x-ray diffraction effects all support the view that the magnetic structure develops by spinodal decomposition. The coercive force can be accounted...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003721
EISBN: 978-1-62708-177-1
... and resistant to microstructural coarsening. Structures in which Each Phase is Closely Interconnected Structures in which each phase is closely interconnected can result from spinodal decomposition (see the article “Spinodal Transformation Structures” in this Volume). The scale of these spinodal...