1-20 of 61 Search Results for

stacking faults

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
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006644
EISBN: 978-1-62708-213-6
... dislocation defects stacking faults X-ray topography is the general term for a family of x-ray diffraction imaging techniques capable of providing information on the nature and distribution of imperfections, such as dislocations, inclusions/precipitates, stacking faults, growth-sector...
Book Chapter

Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006292
EISBN: 978-1-62708-163-4
... tabulates the assorted structure types of metallurgical interest arranged according to Pearson symbol. It also provides information on crystal defects in all real crystals, explaining some significant ones, such as point defects, line defects, stacking faults, and twins. atom position crystal defects...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003084
EISBN: 978-1-62708-199-3
.... This article provides a brief review of the terms and basic concepts associated with crystal structures. It also discusses some of the significant defects obstructing plastic flow in real crystals, namely point defects, line defects, stacking faults, twins, and cold work. Several tables in the article...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005669
EISBN: 978-1-62708-198-6
..., diffusionless (martensitic) phase transformation as occurs with face-centered cubic to hexagonal close-packed transformation in cobalt-chromium alloys, stacking faults and twins and their role in this transformation. It also includes strengthening mechanisms that are responsible for the mechanical properties of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004018
EISBN: 978-1-62708-185-6
... surface imperfections, such as twins and stacking faults. Like dislocations, surface (planar) imperfections of a crystal lattice also occur in conjunction with the plastic deformation of metals, as briefly described in this section. In addition, planar-type crystal imperfections may influence the...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005335
EISBN: 978-1-62708-187-0
...-solution strengthening, and by grain-boundary strengthening. Stacking faults play a role in the development of properties in these alloys. Cobalt alloys are cast by several different foundry methods. Highly engineered components are usually investment cast in air or under a protective...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006284
EISBN: 978-1-62708-169-6
... expended mechanical energy being stored within the specimen. Grains are deformed and move relative to one another. The effects of the stored energy are present as point defects, dislocations, and stacking faults. Dislocations—flaws in the linear array of atoms—are generated and become rearranged due to...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004019
EISBN: 978-1-62708-185-6
... deformation. When a metal is cold worked by plastic deformation, a small portion of the mechanical energy expended in deforming the metal is stored in the specimen. This stored energy resides in the crystals as point defects (vacancies and interstitials), dislocations, and stacking faults in various forms and...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006267
EISBN: 978-1-62708-169-6
... close-packed (hcp), which occurs at a temperature of approximately 422 °C (792 °F) ( Ref 2 ). Alloying elements such as iron, manganese, nickel, and carbon tend to stabilize the fcc structure and increase stacking-fault energy, whereas elements such as chromium, molybdenum, tungsten, and silicon tend to...
Book Chapter

By Sammy Tin
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005404
EISBN: 978-1-62708-196-2
... for creep correlates better with the lower value of the self-diffusion coefficient for grain-boundary diffusion. Moreover, a dependence of the steady-state creep rate on stacking-fault energy has also been established ( Fig. 5 ) ( Ref 8 ). Based on these relationships, the steady-state creep can also...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005413
EISBN: 978-1-62708-196-2
..., oriented for single slip and deformed in tension at room temperature. The stages I, II, and III can be clearly distinguished, since silver exhibits a distinct stage II, due to its low stacking fault energy ( Ref 6 ). The corresponding curve of a fine-grained polycrystal ( Ref 7 ) exhibits stage III...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... is usually indicated by its stacking-fault energy. Dislocation cross slip is hindered by the presence of stacking faults, and a high stacking-fault energy indicates a low number of impeding stacking faults and an increased tendency to cross slip and hence gall. Nickel and aluminum have poor galling...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005657
EISBN: 978-1-62708-198-6
... from fcc to hexagonal close-packed phases. The high work-hardening rates that characterize cobalt-base alloys are attributed to extremely low stacking-fault energies. Given ample slip systems due to their low stacking-fault energies and metastable fcc crystal structure, overload fractures in cobalt...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003995
EISBN: 978-1-62708-185-6
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006655
EISBN: 978-1-62708-213-6
... possible to determine that the average misorientation from (111) was less than 0.25°. However, extensive twinning was found in the crystal. Twinning in this type of crystal structure is caused by stacking faults. The normal sequence of planes in an fcc (111) stacking is ABCABC. That is, every third...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006670
EISBN: 978-1-62708-213-6
... crystals lack internal two-dimensional (2D) defects such as grain boundaries; however, some systems such as gallium nitride may exhibit stacking faults. Dislocations, one-dimensional (1D) defects, may occur within the bulk of a material or at interfaces. Dislocations and stacking faults contain a variety...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005403
EISBN: 978-1-62708-196-2
... is very efficient (i.e., in metals where high stacking-fault energy favors dislocation mobility), the initial grains can undergo quite large strains without losing their individualities. In the absence of a nucleation mechanism, the new grain structure results from the progressive fragmentation of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004029
EISBN: 978-1-62708-185-6
... ( Ref 16 ), see Fig. 11 , which may be a stacking-fault energy effect. Similar trends can be attributed to decreasing the grain size ( Ref 17 ) (decreasing the reheat temperature), see Fig. 12 , and to increasing the cooling rate ( Ref 15 ). Fig. 10 The effect of compositional and processing...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006285
EISBN: 978-1-62708-169-6
... rearrangement of dislocations. These processes are achieved by glide, climb, and cross slip of dislocations. Aluminum has a high stacking-fault energy, and this limits dislocation dissociation during deformation and leads to relatively easy dislocation climb and recovery during annealing. Climb is usually the...
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
... mechanisms of precipitation hardening have in common the method in which dislocations are impeded through the particle and matrix and the description of that motion. Six primary mechanisms of precipitation hardening have been described in the literature: chemical strengthening, stacking-fault strengthening...