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hexagonal systems

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Published: 01 January 2005
Fig. 4 Illustration of slip planes, slip directions, and slip systems in hexagonal close-packed (hcp), face-centered cubic (fcc), and body-centered cubic (bcc) structures. Source: Ref 2 More
Image
Published: 01 December 2009
Fig. 3 Common slip systems for hexagonal close-packed (alpha) titanium crystals. (a) Basal < a >. (b) Prism < a >. (c) Pyramidal < c + a > More
Image
Published: 01 November 1995
Fig. 36 Structure of borides. Source: Ref 81 , 82 , 83 Formula Metal Crystal system and structural type Arrangement of boron atoms M 4 B Pd, Pt Cubic, Pt 4 B-type Isolated atoms M 2 B Ta, Cr, Mo, W, Fe, Ni, Co Tetragonal, CuAl 2 -type Isolated atoms M 5 B 3 More
Image
Published: 15 January 2021
Fig. 1 Embrittlement and nonembrittlement couples in solid/liquid systems. hcp, hexagonal close-packed; bcc, body-centered cubic; fcc, face-centered cubic. Source: Ref 5 More
Image
Published: 01 August 2013
Fig. 8 Arrhenius plot of diffusivity of various metal systems. bcc, body-centered cubic; hcp, hexagonal close-packed; fcc, face-centered cubic. Adapted from Ref 12 More
Book Chapter

Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0006544
EISBN: 978-1-62708-183-2
... in metallic systems that they are often identified by three-letter abbreviations that combine the space lattice with the crystal system. For example, bcc is used for body-centered cubic (two atoms per unit cell), fcc for face-centered cubic (four atoms per unit cell), and cph for close-packed hexagonal (two...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006467
EISBN: 978-1-62708-190-0
... hexagonal bars. (a) Normal-beam method to detect flaws deep inside bar. (b) Angle-beam method to detect surface and near-surface flaws. Source: Ref 1 Specifications of an ultrasonic flaw-detection system for cold-drawn hexagonal bars Table 2 Specifications of an ultrasonic flaw-detection system...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003037
EISBN: 978-1-62708-200-6
... other resin systems can be used. Ideally, the resin content should be approximately 50%. Therefore, a range of ribbon thicknesses must be available to make cores of various densities, while maintaining the resin content as close to 50% as possible. To date, honeycomb has been produced from more than...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003716
EISBN: 978-1-62708-182-5
... in gases has been primarily a problem in combustion systems. Thus, the gas-metal reactions are usually referred to as oxidation in its broad chemical sense, whether the reaction is with pure oxygen, water, sulfur dioxide (SO 2 ), or whatever the gas might be. The corrosion product (oxide layer) is termed...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003084
EISBN: 978-1-62708-199-3
...-centered cubic (four atoms per unit cell), and cph for close-packed hexagonal (two atoms per unit cell). (The latter space-lattice/crystal system is also commonly referred to as hexagonal close-packed, hcp, in metallurgical literature.) It should be noted that in the schematic representations shown...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003735
EISBN: 978-1-62708-177-1
... interface has been established, although some controversy still surrounds this issue. Massive transformations occur in a wide array of materials, both in pure metals and in alloys. A short list of model binary systems is shown in Table 1 , although it should be noted that this list is not meant...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003165
EISBN: 978-1-62708-199-3
...% tensile elongation) at room temperature, which is attributed to a large covalent component in its atomic bonding in the c -axis direction and to its hexagonal close-packed (hcp) crystal structure, which is limited at room temperature to only one slip direction on two crystal planes, basal and prism...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003588
EISBN: 978-1-62708-182-5
... of the standard Gibbs energy change of formation of oxides and the corresponding dissociation pressures of the oxides as a function of temperature. It demonstrates the Kellogg diagram which shows stability range in more complicated multioxidant systems. The article explains the determination of partial pressures...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001106
EISBN: 978-1-62708-162-7
... are usually alkali, alkaline earth metals, or compounds. Cubic boron nitride can be grown from a variety of solvent/catalysts, including metal systems similar to those used for diamond synthesis ( Ref 8 ). Because the pressure-temperature conditions for the conversion of hexagonal boron nitride (HBN) to CBN...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003059
EISBN: 978-1-62708-200-6
..., with cations residing in available interstices. An illustration of the cubic and hexagonal close-packed lattices indicating the positions of tetrahedral and octahedral interstices is shown in Fig. 1 . Summary of ceramic crystal structures Table 1 Summary of ceramic crystal structures Class Name...
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
... letters preceded by a , m , o , t , h , and c to denote, respectively, six crystal systems: triclinic (anorthic), monoclinic, orthorhombic, tetragonal, hexagonal, and cubic. The 14 space (Bravais) lattices and their Hermann-Mauguin and Pearson symbols Table 2 The 14 space (Bravais) lattices...
Book Chapter

Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003722
EISBN: 978-1-62708-177-1
..., each with a specified equality or inequality to others of axial lengths and interaxial angles. These are the basis of the following crystal systems—triclinic (anorthic), monoclinic, orthorhombic, tetragonal, hexagonal, rhombohedral (trigonal), and cubic—employed in the classification of crystals...
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.9781627081887
EISBN: 978-1-62708-188-7
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0005701
EISBN: 978-1-62708-188-7
... spniy deposition FMS flexible manufacturing system AC adaptive control CVD chemical vapor deposition ft foot ACC adaptive control with constraints CVN Charpy V-notch (impact test or GAC - geometric adaptive control ACI Alloy Casting Institute gal. gallon ACO adaptive control with optimization specimen...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006375
EISBN: 978-1-62708-192-4
... fresh surfaces are produced continuously by a counterfacing material. It also applies in vacuum tribology to wear-resistant components used in aerospace mechanisms, semiconductor processing equipment, machine tool spindles, and other systems experiencing sliding or rolling contact at low pressures...