1-20 of 319 Search Results for

Columnar grains

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
Image
Published: 01 December 2004
Fig. 24 Macrograph of the cross section of a steel casting showing columnar grains. Etched in hot 50% HCl + 50% water. Scale is 6 cm. More
Image
Published: 01 December 2004
Fig. 35 Columnar grains of single-phase solid solution of melt-spun Ag-28%Cu alloy (eutectic composition). Section of full ribbon cross section. Chill (wheel) side is at bottom. Etched with: 20 mL NH 4 OH, 10 mL 3% H 2 O 2 , 10 mL H 2 O (used fresh). Magnification: 2000×. Source: Ref 18 More
Image
Published: 31 August 2017
Fig. 4 Macrostructure of 30 mm (1.2 in.) diameter bars showing columnar grains (primary austenite dendrites). Source: Ref 9 More
Image
Published: 31 October 2011
Fig. 10 Illustration of the epitaxial growth of columnar grains of the weld deposit from the fusion line of a stainless steel weld. After Honeycombe and Gooch, reprinted from Ref 5 More
Image
Published: 15 June 2020
Fig. 9 Columnar grains in the microstructure of a copper-zinc alloy produced by laser powder-bed fusion More
Image
Published: 30 August 2021
Fig. 20 Fracture surface morphologies. (a) Fracture along columnar grains. (b) Fracture along equiaxed grains. (c) Fracture morphology observed with high magnification. (d) Transgranular morphology at high magnification (scanning electron microscopy) More
Image
Published: 01 June 2016
Fig. 5 Comparison of creep resistance of polycrystalline (PC) and columnar grain directionally solidified (CGDS) castings. (a) Creep behavior of PC and CGDS cast alloys IN-100, B-1900, and MAR-M-200 at 980 °C (1800 °F) and 207 MPa (30 ksi). (b) Typical stress for 100 h rupture of MAR-M-200 More
Image
Published: 30 June 2023
Fig. 5 Typical columnar grain structure of Al-7075 manufactured by laser powder-bed fusion. Source: Ref 18 More
Image
Published: 01 November 2010
Fig. 4 Schematic illustration of the columnar-to-equiaxed transition. Grains nucleating in the undercooled region ahead of the columnar front, with a nucleation temperature ( T N ) that is comprised between the columnar tip temperature ( T C ) and the liquidus temperature ( T L ), can block More
Image
Published: 01 January 1993
Fig. 4 Columnar beta grains in a Ti-6Al-4V spot weld. (a) 10×. (b) 240×. Courtesy of The Welding Institute More
Image
Published: 01 January 1993
Fig. 5 Macrograph showing columnar beta grains in a Ti-6Al-4V laser-beam weld. 13×. Courtesy of The Welding Institute More
Image
Published: 01 December 2004
Fig. 3 Orientation image (obtained by mapping of automated electron backscatter diffraction data) of a columnar grain formation during solidification of a nickel-base alloy. The small grains at image bottom are solidification nuclei with the extended columnar grains growing into the melt More
Image
Published: 01 December 2004
Fig. 20 6 xxx alloy extrusion billet. (a) Transverse cross section showing fine equiaxed grain structure. Original, 0.75×. (b) Billet showing coarse grain structure and massive twin columnar grains on upper right side. Original, 1×. (c) Extrusion billet with massive twin columnar grains More
Image
Published: 01 December 2008
Fig. 6 Three types of as-cast structures seen in centrifugally cast ferrous alloys. (a) Fine columnar skin, large welloriented columnar grains, and equiaxed area. (b) Completely equiaxed structure sometimes observed in ferritic steels. (c) Equiaxed bands of varying grain size. This type More
Image
Published: 01 December 2004
Fig. 27 Computer processed image of the macrostructure of a Ti-6Al-4V ingot. (a) Longitudinal section with coarse equiaxed grains in the center (light), columnar grains (gray), and fine equiaxed grains on the surface. (b) Cross section with reverse coloration More
Image
Published: 01 December 2004
Fig. 2 High-purity lead (99.99% Pb), as-cast. Transverse section through a pig showing large equiaxed and columnar grains. Large grains result from the absence of grain-nucleating impurities and alloying elements (such as copper). Ammonium molybdate reagent. Actual size More
Image
Published: 01 January 2024
Fig. 24 Optical metallographs (Klemm's I tint etch) from a kabuto sample showing (a) columnar grains at the fracture surface and a duplex grain structure and (b) intragrain and grain-boundary carbide precipitates. (b) is a detail of (a). Courtesy of George Vander Voort, Vander Voort Consulting More
Image
Published: 01 August 2013
Fig. 12 Scanning electron micrograph of fractured surface of plasma spray coating showing columnar grains More
Image
Published: 01 December 2004
Fig. 10 25 mm (1.0 in.) type 304 stainless steel plate, shielded metal arc weld. Heat input: 1.0 MJ/m. Macrograph shows epitaxial grain growth resulting in continuous columnar grains occurring through successive passes in a multiple-pass weld. Etchant: 10% oxalic acid electroetch More
Image
Published: 01 December 2004
Fig. 15 Directionally solidified titanium-aluminum ingots with rotation of each columnar grain. Source: Ref 44 More