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porosity

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140047
EISBN: 978-1-62708-335-5
...Abstract Abstract Porosity in aluminum is caused by the precipitation of hydrogen from liquid solution or by shrinkage during solidification, and more usually by a combination of these effects. Nonmetallic inclusions entrained before solidification influence porosity formation and mechanical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420429
EISBN: 978-1-62708-310-2
... on secondary dendrite arm spacing, and the factors that contribute to porosity and shrinkage. dendrite metal shrinkage porosity segregation solidification structures ALMOST ALL METALS AND ALLOYS are produced from liquids by solidification. Sometimes, the liquid metal is poured in a mold...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... due to fastener hole defects   RTD Tension Compression RT (a) 250° F (a) Out-of-round holes 50/40/10 laminate (b) … … 30/60/10 laminate –4.8 … … Broken fibers exit side of hole Severe –7.3 –8.4 –9.2 Moderate –1.4 –3.2 –4.2 Porosity around hole...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
..., gravity, micro, and inverse. The chapter also provides information on grain refinement and secondary dendrite arm spacing and porosity and shrinkage in castings. It concludes with a brief overview of six of the most important casting processes in industries: sand casting, plaster mold casting, evaporative...
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
... solidification and porosity is also discussed along with its detrimental effect on the mechanical properties of metal castings. alloying elements carbides cast metals inclusions mechanical properties microsegregation microstructure porosity solidification VIRTUALLY ALL STEEL PRODUCTS have been...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000109
EISBN: 978-1-62708-312-6
...Abstract Abstract This chapter discusses the mechanical properties of powder metal stainless steels and the extent to which they can be controlled through appropriate alloying and processing steps. It describes how process-related factors, such as porosity, interstitial content, sintering...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260119
EISBN: 978-1-62708-336-2
... homogenization, and the cause of casting defects, including cracking and splitting, segregation, porosity, and grain growth. aluminum alloys billets casting casting defects The extrusion process consists of four major components, hydraulic press, die, tooling, and billet casting. In the previous...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140055
EISBN: 978-1-62708-335-5
...Abstract Abstract Hot isostatic pressing (HIP) is a process refinement available to address internal porosity in castings. The HIP process may be used, in particular, for applications requiring very high quality and performance. This chapter discusses the principles, advantages...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130151
EISBN: 978-1-62708-284-6
...Abstract Abstract This chapter describes cast steel features that may be identified or attributed to component failure during heat treatment or subsequent processing or service, namely porosity (generated by the presence of gas as well as by shrinkage pores), decarburization, cold joint...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
..., ceramics, and porous structures and foams. Improvements in the design processes have led to the development of functional structures, controlled porosity, and bioinspired structures. Selected References Selected References • Alman D.E. , Stoloff N.S. , Bose A. , and German R.M...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... how patterns, molds, and shells are produced, discusses the practice of directional solidification, and examines an assortment of turbine components cast from nickel- and cobalt-base alloys. The chapter also addresses casting problems such as inclusions, porosity, distortion, core shift, and leaching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
... location influence measured properties. It also provides information and data on the physical and mechanical properties of superalloys, particularly tensile strength, creep-rupture, fatigue, and fracture, and discusses related factors such as directionality, porosity, orientation, elongation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220039
EISBN: 978-1-62708-259-4
...Abstract Abstract This chapter discusses the practices and procedures used to reveal and record macrostructural features such as hardening depth, weld thickness, crack size, porosity, hot folds, and machining and tooling marks. It provides information on sectioning, sample location, orientation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
..., and dimensional inspection. Casting defects including porosity, oxide films, inclusions, hot tears, metal penetration, and surface defects are reviewed. Liquid penetrant inspection, magnetic particle inspection, eddy current inspection, radiographic inspection, ultrasonic inspection, and leak testing for castings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000203
EISBN: 978-1-62708-312-6
... characterized by the presence of compounds, such as oxides, carbides, and nitrides, and various forms of corrosion. austenitic stainless steel carbides corrosion ferritic stainless steel fractograph microstructure nitrides oxides photomicrograph porosity sintering Powder Morphologies...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... taken place and showing weld crown with nonuniform curvature, 8×; and (b) inner surface with sharp ripples and deep undercuts indicating poor quality of weld, 8× Macrostructural examination also confirmed the very poor quality of the welding; gross weld porosities and deep undercuts on either...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... Compression RT (a) 250 °F (a) Out-of-round holes   50/40/10 laminate (b) — —   30/60/10 laminate –4.8 — — Broken fibers exit side of hole   Severe –7.3 –8.4 –9.2   Moderate –1.4 –3.2 –4.2 Porosity around hole   Severe (b) –10.3 –30.8   Severe...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... the weld metal and the base metal Porosity: Cavity type discontinuities formed by gas entrapment during solidification Overlap: The protrusion of weld metal beyond the toe or root of the weld Tungsten inclusions: Particles from tungsten electrodes embedded in the weld metal that result from...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780131
EISBN: 978-1-62708-268-6
... correct, although this is a relatively difficult determination to make after the epoxy has cured. If a two-part epoxy is mixed too aggressively, bubbles can form and induce porosity, resulting in a leak path. The failure analysis team can section the epoxy to determine if porosity is present. Sometimes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870333
EISBN: 978-1-62708-314-0
.... The cure process can also result in defects, the most serious being porosity and voids. If an adhesive bonding operation is involved, adhesive unbonds are some of the most serious flaws, followed closely by a large number of potential honeycomb core defects. Delaminations are the most serious type...