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shrinkage porosity

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005222
EISBN: 978-1-62708-187-0
... Abstract This article provides a detailed discussion on the causes of formation of shrinkage porosity and gas porosity along with the methods involved in eliminating them. It discusses the process of porosity formation and the factors affecting porosity formation, including alloy composition...
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Published: 01 January 2002
Fig. 60 Dendritic shrinkage porosity in aluminum alloy A356. Shrinkage porosity is a common imperfection in cast components and also a common location for fracture initiation. (a) Fracture surface from a fatigue specimen. 30×. (b) Same specimen as in part (a) but at lower magnification (13 More
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Published: 15 January 2021
Fig. 60 Dendritic shrinkage porosity in aluminum alloy A356. Shrinkage porosity is a common imperfection in cast components and a common location for fracture initiation. (a) Fracture surface from a fatigue specimen. Original magnification: 30×. (b) Same specimen as in part (a) but at lower More
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Published: 01 December 2008
Fig. 1 (a) Gas porosity and (b) shrinkage porosity in an AA 5182 remelt secondary ingot More
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Published: 01 January 1986
Fig. 17 Typical defects observable using optical microscopy. (a) Shrinkage porosity in an aluminum alloy 5052 ingot. Note angularity. 50×. (b) Coarse primary CrAl 7 crystal in aluminum alloy 7075 ingot. 100×. (c) Oxide stringer inclusion in a rolled aluminum alloy 1100 sheet. 250×. All More
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Published: 01 January 1990
Fig. 6 Dendritic structure present in the surface shrinkage porosity of an as-cast Ti-6Al-4V component More
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Published: 01 December 2004
Fig. 10 An 18 k white-gold (75Au-10Cu-15Pd) casting showing shrinkage porosity. 50× More
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Published: 01 December 2004
Fig. 35 Microstructure of clip showing shrinkage porosity. 80× More
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Published: 31 August 2017
Fig. 14 SEM fractograph showing shrinkage porosity (dendrites) in a G3000 gray iron brake housing. Original magnification: 50×. Courtesy of M.C. Kim and L.W. McFarland, Caterpillar Inc. More
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Published: 01 December 2008
Fig. 9 Forms of shrinkage porosity in the sand castings of alloys that freeze in a pasty manner More
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Published: 01 August 2018
Fig. 24 Radiographic appearance of gross shrinkage porosity (arrow) in an aluminum alloy 319 manifold casting. Radiograph was made at 85 kV with 1 min exposure. More
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Published: 01 January 2002
Fig. 3 Shrinkage porosity at bolt-hole bosses in a ductile-iron cylinder head More
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Published: 01 January 2002
Fig. 5 Wire-stretching jaws that broke because of shrinkage porosity and low ductility of case and core. The jaws, sand cast from low-alloy steel, were used to stretch wire for prestressed concrete beams. (a) Two pairs of movable jaws. 0.7×. (b) Two pairs of stationary jaws. 0.7×. (c) and (d More
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Published: 15 January 2021
Fig. 31 (a) Aluminum casting exhibiting shrinkage porosity. (b) Scanning electron microscope image of shrinkage porosity More
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Published: 01 June 2016
Fig. 5 (a) Interdendritic shrinkage and (b) porosity in an EN AB 46000 (AlSi 9 Cu 3 ) alloy die casting. Source: Ref 15 More
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Published: 01 December 2008
Fig. 12 (a) Porosity caused by interdendritic shrinkage during the solidification of a cast 4340 steel. The post-HIP microstructure of this component, shown in (b), provides evidence that HIP eliminated the microporosity. These two micrographs also show the potential for HIP to alter More
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Published: 30 September 2015
Fig. 4 Effect of pressing pressure on shrinkage factor and porosity in the sintered part More
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006327
EISBN: 978-1-62708-179-5
...), graphite clusters, exploded graphite, slag inclusions, shrinkage porosity, eutectic chill and secondary carbides, and cold shuts. The article reviews the tensile, fatigue, impact, and wear properties of TWDI castings. It provides information on the production and applications of TWDI castings...
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Published: 01 December 2004
Fig. 44 Micrographs of porosity in a cast aluminum-silicon alloy. (a) Gaseous porosity. 100×. (b) Dispersed shrinkage porosity. 50×. (c) Cluster of shrinkage pores. 50×. Source: Ref 38 More
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Published: 01 December 2008
Fig. 15 Just below the casting surface the fracture shows features indicative of shrinkage porosity. The microstructure at the porosity consists of tempered martensite, whereas the remainder of the section is upper bainite and ferrite. More