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recrystallization nuclei

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Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005432
EISBN: 978-1-62708-196-2
... is not enforced across element boundaries. Source: Ref 20 with permission from The Royal Society and the author Fig. 5 Recrystallization modeling. (a) Original undeformed cellular automaton (CA) grain structure in gray and the recrystallized grains in black. (b) Ratio of the recrystallization nuclei...
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
... specimen prepared parallel to the rolling plane. Compare with Fig. 14(a) . Original magnification 14,740× Fig. 14 Electrolytic copper, cold rolled 99.5%. (a) Annealed at 100 °C (212 °F) for 625 min. Recrystallization nuclei formed among microbands are shown. Original magnification 17,100×. (b...
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
..., recrystallization (or primary recrystallization) occurs by the nucleation and growth of new grains, which are essentially strain-free, at the expense of the polygonized matrix. During incubation, stable nuclei are formed by the coalescence of subgrains, leading to the formation of high-angle boundaries. From...
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
... recrystallization nuclei compiled from four orientation microscopy scans on a sample containing a recrystallized volume fraction of<5%. φ 2 =45°. Levels: 1-2-4-6-8-11 Abstract Abstract The processing of steel involves five distinct sets of texture development mechanisms, namely, austenite deformation...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003743
EISBN: 978-1-62708-177-1
... in subsequent examples. Following recovery, recrystallization (or primary recrystallization) occurs by the nucleation and growth of new grains, which are essentially strain-free, at the expense of the polygonized matrix. During incubation, stable nuclei are formed by the coalescence of subgrains, leading...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005401
EISBN: 978-1-62708-196-2
...” are energy-level distributions used in Fig. 9 . MU, model lattice units. Source: Ref 34 Fig. 9 Monte Carlo simulation predictions of the effect of initial stored-energy distribution on recrystallization, assuming randomly oriented nuclei. (a) Recrystallized fraction X . (b) Corresponding Avrami...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005408
EISBN: 978-1-62708-196-2
... of interstand recrystallization after the first hot rolling pass Fig. 6 Cold-rolled AA 3104-H19. (a) Texture. (b) Various earing profiles. h is the cup height (symmetrized). RD, rolling direction; TD, transverse direction Fig. 10 Simulation of (a) temperature and (b) dislocation density...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009002
EISBN: 978-1-62708-185-6
.... and Gobel I.R. , “Simulation of Recrystallization by Cellular Automata,” Acta Metall. Mater. , Vol 39 , 1991 , p 2135 26. Davies C.H.J. , “Growth of Nuclei in a Cellular Automaton Simulation of Recrystallization,” Scr. Mater. , Vol 36 , 1997 , p 35 27. Goetz R.L...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004027
EISBN: 978-1-62708-185-6
... of three variables: subgrain size, δ, misorientation across subgrain boundaries, θ, and dislocation density inside subgrains, ρ i . These variables, and their distributions, enter equations for flow stress, density of recrystallization nuclei, and stored energy, which determines growth rate. By considering...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005459
EISBN: 978-1-62708-196-2
... is complete before a second generation of nuclei appears in the first recrystallized grains ( Fig. 5b ). The various factors that control dynamic recrystallization, from dislocation generation and recovery to nucleation and grain-boundary migration, are thermally activated. Therefore, an increase...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006250
EISBN: 978-1-62708-169-6
... rate decreases much faster than the growth rate. Therefore, N ˙ / G ˙ decreases with decreasing deformation. Fig. 12 Nucleation and growth rates during recrystallization of aluminum annealed at 350 °C (660 °F). Source: Ref 13 This supports the idea that nuclei form...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003971
EISBN: 978-1-62708-185-6
... are a result of both dislocation glide and dynamic recrystallization. Texture evolution can be quantified by mechanisms such as oriented nucleation and selective growth. In the former mechanism, recrystallization nuclei are formed in those grains that have suffered the least shear strain (i.e., dislocation...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005428
EISBN: 978-1-62708-196-2
.... , Interfaces in Crystalline Materials , Oxford Science Publications , Oxford, U.K. , 1995 16. Holm E.A. , Miodownik M.A. , and Rollett A. , On Abnormal Subgrain Growth and the Origin of Recrystallization Nuclei , Acta Mater. , Vol 51 , 2003 , p 2701 – 2716 17. Mullins...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003744
EISBN: 978-1-62708-177-1
...⟩ Recrystallization after wiredrawing fcc ⟨111⟩ + ⟨100⟩; also ⟨112⟩ bcc ⟨110⟩ hcp  Be ⟨10 1 0⟩  Ti, Zr ⟨11 2 0⟩ Ortho, U ⟨431⟩ + ⟨100⟩ Uniaxial compression fcc ⟨100⟩ bcc ⟨111⟩ + ⟨110⟩ hcp  Mg, Co (?) [0001]  Hf, Ti [0001] 10–30° from compression axis...
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
... ¯ . If DDRX leads to grain refinement (more precisely, if D 0 ≥ 2 D ¯ ), the initial microstructure contains few nucleation sites (on the grain boundaries). The recrystallization process is associated with necklace formation until new nuclei appear, which prevents synchronization...
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
..., but are beneficial for two reasons: they allow additional suppression of recrystallization by preventing migration of austenite grain subboundaries, and they provide a large number of nuclei in the deformed austenite for the formation of fine ferrite particles during cooling. Phosphorus is often regarded...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005414
EISBN: 978-1-62708-196-2
... 0.5 = 9.95 × 10 − 3 ⋅ d 0 0.1 [ ε ˙ ⋅ exp ⁡ ( 278 , 772 R T ) ] 0.145 Published models for static recrystallization kinetics and recrystallized grain size Table 3 Published models for static recrystallization kinetics...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001286
EISBN: 978-1-62708-170-2
...Abstract Abstract This article describes eight stages of the atomistic film growth: vaporization of the material, transport of the material to the substrate, condensation and nucleation of the atoms, nuclei growth, interface formation, film growth, changes in structure during the deposition...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003723
EISBN: 978-1-62708-177-1
...) and the cementite carbide (c). Formation of the pearlite morphology, consisting of alternating plate crystals of ferrite and Fe 3 C, is dominant at the higher transformation temperatures. The nucleation rates of pearlite are low at temperatures near A 1 , but nuclei growth is enhanced by diffusion of constituents...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006304
EISBN: 978-1-62708-179-5
...Free energy of formation of possible compounds in spheroidal graphite nuclei Table 1 Free energy of formation of possible compounds in spheroidal graphite nuclei Compound Δ G , J/mol Compound Δ G , J/mol Compound Δ G , J/mol Complex oxides Oxides Nitrides 2MgO·2CaO...