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lattice parameter

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240625
EISBN: 978-1-62708-251-8
...Abstract Abstract This appendix explains how to calculate atomic packing factors, lattice parameters, and coordination numbers for cubic crystal structures, including simple, body-centered, and face-centered cubic systems. It also addresses hexagonal close-packed systems. atomic packing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420363
EISBN: 978-1-62708-310-2
.... Source: Ref A.1 Fig. A.3 Primary bonding mechanisms. Source: Ref A.1 Abstract Abstract This appendix provides a detailed overview of the crystal structure of metals. It describes primary bonding mechanisms, space lattices and crystal systems, unit cell parameters, slip systems...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.9781627082518
EISBN: 978-1-62708-251-8
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240631
EISBN: 978-1-62708-251-8
...) The Miller indices for the plane shown in Fig. C.2(c) would be: Since the plane passes through the origin, the plane must be moved. By moving it one lattice parameter on the y -axis, x = ∞, y = −1, z = ∞. Reciprocals 1 x = 0 ,   1 y = − 1 ,   1 z = 0...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420239
EISBN: 978-1-62708-310-2
... temperature. This process generates less thermal stress in the samples, making lattice parameter measurements more accurate. Homogenization is achieved through diffusion, thus the annealing time and temperature are two important factors. Because the diffusion coefficient increases greatly with temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
... the matrix (γ) and the precipitate (γ′, γ″) due to the difference in their lattice parameters 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860295
EISBN: 978-1-62708-348-5
.... , and Sully A. H. ( 1937 ). An x-ray investigation of pure iron–nickel alloys. Part 4: The variation of lattice-parameter with composition . Proc. Phys. Soc. (London) 49 , 315 – 322 . 10.1088/0959-5309/49/3/313 Owen W. S. and Wilson E. A. ( 1965 ). A note on massive structures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410063
EISBN: 978-1-62708-265-5
... Martensite Embrittlement , Metall. Trans. A , Vol 9A , 1978 , p 439 – 450 10.1007/BF02646396 5.16 Roberts C.S. , Effect of Carbon on the Volume Fractions and Lattice Parameters of Retained Austenite and Martensite , Trans. AIME , Vol 197 , 1953 , p 203 – 204 10.1007/BF03397477...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730069
EISBN: 978-1-62708-283-9
... Fig. 7.5 The ratio of the c lattice parameter to the a lattice parameter increases with carbon content. With no carbon, the lattice parameters are the same so the structure is cubic. Source: Ref 7.4 Martensite is harder than pearlite. Its hardness depends only on the carbon content...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410017
EISBN: 978-1-62708-265-5
... in steel is bcc. Source: Ref 3.1 The lattice parameter of alpha iron at room temperature is 0.286 nm (2.86 Å) ( Ref 3.5 ). The body diagonals of the unit cell, corresponding to the <111> directions, are the directions in which the iron atoms are in contact in the bcc structure. Figure 3.2...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220001
EISBN: 978-1-62708-259-4
... and physically distinct) of iron are stable at different ranges of temperature and pressure ( Fig. 1.2 ). Fig. 1.2 (a) Body-centered cubic (BCC) structure. The lattice parameter for pure iron at room temperature is 2.86 Å. (b) Face-centered cubic (FCC) structure. The lattice parameter for pure Fe at room...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000025
EISBN: 978-1-62708-313-3
... superalloy phases is presented in Table 4.1 . As may be seen from the table, some phases in superalloys are beneficial and others degrade alloy properties ( Ref 1 ). Phases observed in superalloys Table 4.1 Phases observed in superalloys Phase Crystal structure Lattice parameter, nm Formula...
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
... with the long-range order parameter, when the degree of short-range order is 0 (σ = 0), a disordered alloy is present, and when σ = 1, the alloy is completely ordered. At elevated temperatures, the CuAu alloy is a disordered solution with a fcc lattice, where copper and gold atoms are randomly located...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230151
EISBN: 978-1-62708-298-3
.... The lattice parameter of beta (bcc) beryllium is 0.2549 nm. The alpha (hcp) phase of beryllium has lattice parameters of a = 0.2285 nm and c = 0.3585 nm. The hcp lattice parameters give an axial ratio of 1.5688, which is less than the ideal value of 1.632. At the alpha-to-beta transformation, the bcc phase...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240303
EISBN: 978-1-62708-251-8
... are those properties that can be measured or characterized without application of force and without changing the material identity. They are relatively insensitive to structure. Common physical properties include density, lattice parameter, electrical properties such as conductivity and dielectric...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240003
EISBN: 978-1-62708-251-8
... edge lengths and axial angles are unique for each crystalline substance. The unique edge lengths are called lattice parameters. Axial angles other than 90° or 120° can also change slightly with changes in composition. When the edges of the unit cell are not equal in all three directions, all unequal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230027
EISBN: 978-1-62708-298-3
..., respectively [ Stonehouse et al. 1965 ]. The first and second ionization potentials are 9.320 and 18.206 eV. The valence is 2. The variation of the two lattice parameters (a- and c-axes) of α-beryllium with temperature is given in Table 4.2 . Note that the c/a ratio decreases as the crystal (lattice) expands...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420339
EISBN: 978-1-62708-310-2
..., β, or I) and usually a different lattice parameter than the parent phase. This general type of phase change is different from reactions at the invariant points of phase transformation (e.g., a eutectic or peritectic), where any change in temperature or composition results in complete transformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190001
EISBN: 978-1-62708-296-9
...Characteristics of aluminum and silicon crystals Table 1.1 Characteristics of aluminum and silicon crystals Element Crystal lattice Elementary cell Interatomic bonds α sJ ( Ref 4 ) Crystallization front topography System Pearson symbol symmetry Bravais lattice Strukturbericht...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270031
EISBN: 978-1-62708-301-0
... and the lattice parameter of its constituents, an estimate of the time and temperature of exposure of the component to the oxidizing service environment can be obtained, knowing the kinetics of oxide growth on the material. Thus, oxide layer characterization provides yet another technique for failure analysis...