1-20 of 97 Search Results for

single-crystal cleavage models

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 Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... concepts. bending brittle fracture compression failure deformation ductile crack nucleation ductile fracture ductility fractography manufacturing imperfections metals microvoid coalescence notched specimen plastic flow root cause failure analysis single-crystal cleavage models specimen...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... is the specific surface energy of the crack faces, c is the crack length, and a is the interatomic spacing of the fracture planes. This expression becomes equal to the Griffith criterion when the crack-tip radius becomes equal to the interplanar spacing. Single-Crystal Cleavage Models It is best...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... mechanisms are influenced by crystal structure, microstructure, loading rate, and temperature, as briefly discussed later in this article and in more detail in the article “Mechanisms and Appearances of Ductile and Brittle Fracture in Metals” in this Volume. Fig. 10 Dimpled rupture created...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006323
EISBN: 978-1-62708-179-5
... before the advent of cleavage. Cleavage takes place along the lowest-packing-density planes of a crystal because fewer bonds need to be broken and the spacing between planes is greater. In the case of body-centered cubic (bcc) crystals, as ferrite in Fe-C alloys, cleavage takes place along {100} planes...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... ) and the distinctive river lines of cleavage for brittle cracking ( Fig. 10 ). The occurrence and appearances of these TG cracking mechanisms are influenced by crystal structure, microstructure, loading rate, and temperature, as briefly discussed later in this article and in more detail in the article “Mechanisms...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001760
EISBN: 978-1-62708-178-8
... in the sample. Any departure from a perfectly smooth surface, such as that caused by cleavage steps, leads to shadowing, as illustrated in the topographs of a magnesium oxide (MgO) single crystal shown in Fig. 9 , which also displays the characteristic features of a hardness impression. Fig. 8 Camera...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002349
EISBN: 978-1-62708-193-1
... ( Ref 13 ), and Polanyi ( Ref 14 ). But these observations do not completely answer the question, and we are led to search for other reasons for weakness. In looking for points of weakness, we begin by noting that pure metals by definition contain no alloying constituents (and may be single crystals...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001769
EISBN: 978-1-62708-178-8
... in Fig. 11 are from cleaved GaAs, producing a (110) surface. However, cleavage is limited to a few crystals and a few surfaces. Samples not cleaved in vacuum must be cut from a single crystal, polished, and oriented carefully to the desired surface using a Laue diffraction camera. Standard polishing...
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
... to ambient atmospheric contamination. The diffraction patterns shown in Fig. 11 are from cleaved GaAs, producing a (110) surface. However, cleavage is limited to a few crystals and a few surfaces. Samples not cleaved in vacuum must be cut from a single crystal, polished, and oriented carefully...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003254
EISBN: 978-1-62708-176-4
...), or hexagonal close-packed (hcp) (e.g., titanium, magnesium, zinc) structures as the unit cell structure. In very specific applications, materials can be used as single crystals where an entire component is fabricated with one spatial orientation repeating throughout. More often than not, however, engineering...
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
... and metallurgical properties, material processing and fabrication, structural applications, mechanical behavior, environmental embrittlement, alloying effects, and crystal structure of aluminides of nickel, iron, titanium, and silicides. It describes the cleavage and intergranular fracture in trialuminides...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002351
EISBN: 978-1-62708-193-1
... Abstract This article reviews the basic processes of fracture and fatigue and shows how these processes occur in materials. It presents an overview of the fatigue mechanisms and some related models for appropriate classes of materials, such as carbon and alloy steels, aluminum alloys...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... or brittle overload failures and the resultant fracture morphology are influenced by various material factors from the atomic level to the bulk material level. The inherent macroscopic ductility of crystalline materials, for example, depends on factors such as the specific crystal lattice that is present...
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
... Abstract This article introduces various techniques commonly used in the characterization of semiconductors, namely single-crystal, polycrystalline, amorphous, oxide, organic, and low-dimensional semiconductors and semiconductor devices. The discussion covers material classification...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003633
EISBN: 978-1-62708-182-5
... on mechanisms describe the physical process involved in crack initiation and propagation. The article also includes information on dissolution models and mechanical fracture models. stress-corrosion cracking time-dependent crack growth crack initiation crack propagation mechanical fracture STRESS...
Book Chapter

By Bruce Craig
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003634
EISBN: 978-1-62708-182-5
..., nickel, and molybdenum in order to produce stainless steels alter the crystal structure, microstructure, and subsequently the heat treatment requirements and therefore the hydrogen embrittlement behavior of this group of ferrous alloys. Stainless Steels The response of stainless steels to hydrogen...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003058
EISBN: 978-1-62708-200-6
... governs crack propagation. In single crystals and in polycrystalline materials at the microscopic level, strong cleavage tendencies also play a role, particularly in the direction of propagation. Fracture Surfaces in Various Glass and Ceramic Materials Glass Glass is an ideal material...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
... in crystal lattice orientation, such as possible mismatch of the low-index planes across grain or subgrain boundaries, produce distinct cleavage fracture surface features, such as cleavage steps, river patterns, feather markings, chevron (herringbone) patterns, and tongues ( Ref 7 ). As shown...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003635
EISBN: 978-1-62708-182-5
... , 9 ) and single crystals ( Ref 10 , 11 ) has been observed. Single crystals of zinc and cadmium exhibited brittle cleavage fracture as a result of LMIE ( Fig. 3 ). These are but a few of the manifestations of LMIE. Fig. 3 Cleavage fracture of cadmium monocrystals at 25 °C (75 °F) following...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... under certain circumstances. For example, during the process of cleavage (elastic) fracture, the fracture crosses a grain on a particular crystal plane, but it can progress further along grain boundaries containing segregates. Intergranular Brittle Cracking Causes of IG brittle fracture include...