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antiphase boundaries

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420171
EISBN: 978-1-62708-310-2
... goes on to identify the most common superlattice structures and their corresponding alloy phases. It also discusses the factors that limit the formation of superlattices along with the kinetics of spinodal decomposition and its effect on microstructure development. antiphase boundaries...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
.... Strengthening by precipitate particles is related to many factors; the intrinsic strength and ductility of the precipitate are most important factors, but there are other important factors, such as: Coherency of γ′ or γ″ precipitates with the γ matrix Antiphase boundary (APB) energy in the ordered γ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
... Antiphase-boundary (APB) energy in the presence of an ordered precipitate (γ′, γ″). The APB represents the energy needed for the dislocation to cut through the ordered precipitate, because cutting could result in disordering between the matrix and precipitate. Volume fraction of the precipitate (γ′, γ...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000059
EISBN: 978-1-62708-313-3
...′ lattice mismatch, γ′ volume fraction, diffusion rates, antiphase-boundary energy, and stacking fault energy. Surface stability improvement is achieved through the formation of a protective surface oxide scale composed largely of chromium and/or aluminum oxides. Reactive elements yttrium, cerium, hafnium...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240041
EISBN: 978-1-62708-251-8
... domains will grow until they impinge on or intersect each other and form antiphase boundaries (APBs). Antiphase boundaries are boundaries between two ordered domains where the periodicity of the ordered structure in one domain is out of step with the other. This can be seen in Fig. 3.7 , which is a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280025
EISBN: 978-1-62708-267-9
... (ordering) for individual atoms increases the amount of energy required to pass deformation elements (dislocations) through a precipitate. The ordered precipitates possess an energy (antiphase domain boundary or APB) representing the extra energy associated with ordered atom positions versus normal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170290
EISBN: 978-1-62708-297-6
... phase, γ′ antiphase-domain-boundary (APB) energy, γ′ morphology, and γ′ stability. A related phase, η, is an ordered ( D 0 24 ) hexagonal phase of composition Ni 3 Ti that may exist in a metastable form as γ′ before transforming to η. Other types of intermetallic phases, such as δ, orthorhombic Ni 3 Nb...