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Equiaxed grains

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Published: 01 December 2001
Fig. 2 Photomicrographs comparing (a) the fully recrystallized, equiaxed grains in undoped tungsten wire to (b) the “interlocked” recrystallized grain structure of doped tungsten wire and to (c) the recrystallized structure of mixed grain size due to ThO 2 particles (black dots) in thoriated More
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Published: 01 November 2007
Fig. 15.6 Development of columnar grain structure and equiaxed grain structure during solidification. CET, columnar-to-equiaxed transition More
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Published: 01 March 2006
Fig. 2 Typical equiaxed grain structure in a type 316L austenitic stainless steel that was solution annealed at 955 °C (1750 °F) and etched with (a) waterless Kalling’s and (b) Beraha’s tint etch. Source: Ref 4 More
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Published: 01 December 2016
Fig. 1.12 Conditions for equiaxed grain nucleation ahead of solidification front. Source: Ref 27 More
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Published: 31 December 2020
Fig. 9 Typical equiaxed grain structure in a type 316L austenitic stainless steel that was solution annealed at 955 °C (1750 °F) and etched with (a) waterless Kalling’s and (b) Beraha’s tint etch. Source: Ref 8 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
... that a metal cast into a mold can have: a chill zone, a zone containing columnar grains, and a center-equiaxed grain zone. Since the way in which alloys partition on freezing, it follows that all castings are segregated to different categories. The different types of segregation discussed include normal...
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Published: 01 January 2015
Fig. 17.26 Evolution of recrystallized equiaxed ferrite grains in tempered martensite of a 0.12% C steel tempered at 675 °C (1250 °F) for (a) 1 h, (b) 1.33 h, (c) 1.67 h, and (d) 4 h. Source: Ref 17.45 More
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Published: 01 January 2015
Fig. 7.7 Ti-13V-11Cr-3Al. Equiaxed beta (metastable) grains resulted from heating specimen from Fig. 7.5 at 790 °C (1450 °F) for ½ h and water quenching. Etchant: 2%HF-4%HNO 3 . Original magnification: 250× More
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Published: 01 January 2015
Fig. 7.21 Ti-5Al-2.5Sn sheet. Equiaxed alpha grains and beta spheroids produced by heating at 845 °C (1550 °F) for ½ h and cooling in air. Etchant: 10%HF-5%HNO 3 . Original magnification: 250× More
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Published: 01 June 2008
Fig. 25.3 Oxygen-free copper hot rolled bar with large, equiaxed, twinned grains. Original magnification: 100×. Source: Ref 4 More
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Published: 01 January 2015
Fig. 10.25 Structure of improperly forged material showing equiaxed beta grain. Equiaxed grains indicate insufficient working after heating in the beta field. Etchant: 10%HF-10%HNO 3 -80%H 2 O. Original magnification: 8x More
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Published: 01 November 2012
Fig. 43 Schematic illustrating intergranular fracture along grain boundaries. (a) Decohesion along grain boundaries of equiaxed grains. (b) Decohesion through a weak grain-boundary phase. (c) Decohesion along grain boundaries of elongated grains. Source: Ref 18 More
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Published: 01 January 2015
Fig. 2.3 Solidification of ingots and large castings involves nucleation, growth of small surface grains, preferred growth of columnar grains, and finally, growth of smaller equiaxed grains. Reprinted with permission from Ref 2.5 More
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Published: 01 December 2016
Fig. 1.6 Schematic presentation of the microstructure evolution during transitions. (a) Plane to cellular (P-C), cellular to dendrite (C-D), dendrite to equiaxed grains (D-E). Source: Ref 14 . (b) Solidification front morphology as affected by the temperature-concentration field. P, plane; K More
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Published: 01 December 2016
Fig. 1.2 Cast part cross section showing macrostructure and morphology of crystallites. K, columnar dendrites, exogenous solidification; E, equiaxed grains, endogenous solidification; F, zone of the small frozen grains. Source: Ref 6 , 7 More
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Published: 01 December 2004
Fig. 10 Typical Gleeble curve of reduction of area versus test temperature for an aircraft structural steel (AF 1410). At the PDT, dynamic recrystallization occurs leading to an equiaxed grain structure. Fracture appearance is ductile. More
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Published: 01 December 2016
Fig. 1.5 Local temperature field at a particular crystallite growth front. (a) Zone of the directional dendrite solidification, heat transfer by solid phase, positive temperature gradient in the liquid alloy. (b) Zone of solidification of the equiaxed grains, heat transfer by liquid phase More
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Published: 01 August 2018
Fig. 16.23 The effect of the presence of TiN on ferrite nucleation in austenitic stainless steel. (a) No TiN addition, typical vermicular structure of ferrite (the micrograph is taken in a plane parallel to the primary axis of the dendrites). (b) Ti and N addition. Equiaxed grains of ferrite More
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Published: 01 January 2015
, (c) hydrogenated then compacted, and (d) hydrogenated in the compacted state. The conditions in (c) and (d) are after dehydrogenation, both showing a refined alpha microstructure: (c) equiaxed grains and (d) fine alpha laths. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140165
EISBN: 978-1-62708-264-8
... front and carry them out into the liquid. When this occurs, the dendrites play an important role in controlling grain size and shape, but otherwise they do not.) Fig. 15.6 Development of columnar grain structure and equiaxed grain structure during solidification. CET, columnar-to-equiaxed...