1-20 of 128 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 August 1999
Fig. 11.15 (Part 3) (g) Shape of a typical weld pool and the direction of growth of columnar grains of weld metal as the pool moves in the direction indicated. More
Image
Published: 01 March 2002
Fig. 8.39 Very-low-carbon motor lamination steel sheet showing columnar grains growing from the sheet surface and equiaxed ferrite grains in the center. Beraha’s reagent. 75× More
Image
Published: 01 December 1996
Fig. 6-3 Schematic illustration of the formation of columnar grains. (From same source as Fig. 6-2 ) More
Image
Published: 01 November 2007
Fig. 15.6 Development of columnar grain structure and equiaxed grain structure during solidification. CET, columnar-to-equiaxed transition More
Image
Published: 01 March 2002
Fig. 5.12 Evolution of grain structure as seen in a polycrystalline, columnar grain directionally soldified, and single crystal directionally solidified blade More
Image
Published: 01 March 2002
Fig. 13.23 Cross-section sketch illustrating the strain-tolerant columnar grain ZrO 2 microstructure of EBPVD zirconia thermal barrier coatings More
Image
Published: 01 August 2018
Fig. 8.50 Transition from fine equiaxial zone (FE) to columnar growth zone. Grains with favorable crystallographic orientation with respect to the heat extraction directions will grow faster and dominate the structure. Adapted from Ref 5 More
Image
Published: 01 December 2000
Fig. 9.1 Columnar beta grains in a spot weld of alpha-beta alloy Ti-6Al-4V. (a) 10×. (b) 240× More
Image
Published: 01 December 2000
Fig. 9.2 Macrograph showing columnar beta grains in a Ti-6Al-4V laser beam weld. 13× More
Image
Published: 01 July 1997
Fig. 1 Macrograph showing columnar beta grains in a Ti-6Al-4V laser-beam weld. 13×. Courtesy of The Welding Institute More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
... of grain structure, as in columnar-grained alloys, or by the elimination of grain boundaries as with single-crystal superalloys. dispersion strengthening precipitation hardening solid-solution hardening superalloys SUPERALLOYS ARE STRENGTHENED through three principal mechanisms: solid...
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...
Image
Published: 01 August 2018
Fig. 8.53 Micrograph of a sample of stainless steel AISI 316 subjected to unidirectional solidification in the direction indicated by the arrow. Columnar grains from solidification are evident. Dendrite images are clearly visible because this steel initially solidifies as austenite 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
... into long columnar shapes extending inward from the wall. Meanwhile, the liquid ahead of the advancing columnar grains is cooling, and it is possible that small particles of solid can nucleate within this cooling liquid, especially if small foreign particles are present in this liquid. The foreign particles...
Image
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
Image
Published: 01 August 2013
Fig. 2.9 Typical structure of a cast ingot with many small grains at the surface and columnar grains extending into the interior. Source: Ref 2.1 More
Image
Published: 01 March 2002
Fig. 3.8 Macrostructure of three turbine blades: polycrystalline (left), columnar grain directionally solidified (center), and single crystal directionally solidified (right) More
Image
Published: 01 March 2002
Fig. 3.29 Microstructure of an AISI/SAE 1045 steel billet showing a decarburized layer of uniform thickness (a zone of complete decarburization) consisting of columnar grains of ferrite. The microstructure below decarburized layer is ferrite and pearlite. 2% nital and 4% picral etch. 32× More
Image
Published: 01 March 2002
Fig. 15.5 Increases in temperature-strength capability of cast nickel-base superalloys for airfoils of large utility gas turbines as a function of year of availability (about 1950–1990). Results referenced to IN-738, showing advances for polycrystalline (PC), columnar grain (CG), and single More
Image
Published: 01 March 2002
Fig. 5.4 (a) Schematic of typical directional solidification (DS) practice, (b) schematic cutaway showing cooling and metal growth in a columnar grain DS process, and (c) schematic of methods used in single-crystal DS process. (1) Use of helical mold section, (2) use of a right-angle mold More