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casting voids

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
... dispersed shrinkage voids and no-fill defects. All of these factors make zirconium metal a much more difficult material to cast than other more common materials of construction. Zirconium casting uses two melting methods: vacuum arc skull melting and induction melting (either vacuum or skull). Both...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... nucleation and propagation. In cast alloys, the presence of both microscale interdendritic porosity and macroscale shrinkage cavities provide “holes” for crack nucleation. There is little difference in void growth from shrinkage porosity and a hole containing an unbonded inclusion. The incipient crack...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006323
EISBN: 978-1-62708-179-5
.... On the other hand, when voids are formed easily or are already present in the matrix, the progress of fracture is controlled by the growth and coalescence of voids. This appears to be the case for cast irons, where graphite particles appear to have weak bonds with the metal matrix. As voids grow and stress...
Book Chapter

Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006338
EISBN: 978-1-62708-179-5
... carbides and steadite in a pearlitic matrix. All etched in nital and shown at original magnification of 400×. Courtesy of the American Foundry Society, Cast Iron Division, Quality Control Committee Fig. 23 Microshrinkage in a thin section of a gray iron casting. (a) Void at arrow that developed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... geometry stress raisers stress-strain behavior twinning unnotched specimen void growth ALTHOUGH FRACTURE can be apparently brittle at the macroscale (without visible distortion), the fracture process at the microscale can be brittle, ductile, alternating, or mixed, as discussed in the preceding...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000614
EISBN: 978-1-62708-181-8
... the horizontal boundary between these two types of fracture. See also Fig. 800 and 801 . 1300× Fig. 800 View of the shear-lip region of the fracture surface in Fig. 798 . Microvoid coalescence here has produced shear dimples with characteristic elongated shape. Note the large voids, which formed...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009072
EISBN: 978-1-62708-177-1
... methods and when each is advantageous Sample clamping—no mold Cavity mold—casting resin Hand mount Automated polishing X X … Hand polishing … X X Fragile features … X … Length/volume of specimens X z … Multiple amples per mount X z z Quick preparation X … X...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009083
EISBN: 978-1-62708-177-1
... light, phase contrast, 40× objective. (b and c) Transmitted light, phase contrast, 20× objective Fig. 4 Solvent-generated voids in the prepreg skins and fillet areas of a honeycomb sandwich structure composite. (a and b) Bag side. (c) Tool side. Epi-bright-field illumination, 5× objective...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
...-bearing capability may be reduced ( Fig. 28 ). Fig. 28 8650 alloy steel with ferrite only on surface, gradually changing to martensite. Nital etch Gas porosity is indicated by rounded voids caused by precipitation of gas bubbles in molten material during casting ( Fig. 30 ). Fig. 30...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005341
EISBN: 978-1-62708-187-0
...A partial list of automotive part types and materials amenable to PCRT Table 1 A partial list of automotive part types and materials amenable to PCRT Category Parts type Cast steel, engine Investment cast steel rocker arms Stamped/brazed steel, engine Stamped and brazed steel...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001350
EISBN: 978-1-62708-173-3
...Abstract Abstract Diffusion bonding is only one of many solid-state joining processes wherein joining is accomplished without the need for a liquid interface (brazing) or the creation of a cast product via melting and resolidification. This article offers a qualitative summary of the theory...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... of interdendritic stress-rupture fracture at the trailing edge (TE) of single-crystal turbine blade casting showing creep voids on the fracture surface. (b) Scanning electron microscopy backscatter electron image of stress-rupture cracks and wrinkled aluminide coating on concave trailing-edge side of single-crystal...