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grain structure

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Published: 01 December 1992
Fig. 4 Grain structure after etching, showing network of prior-austenite grain boundaries and presence of carbides in grain structure. 71×. More
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Published: 01 June 2019
Fig. 2 Grain structure, transverse section, etch: 1% Nital. 500 ×. Cylindrical part. More
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Published: 01 June 2019
Fig. 3 Grain structure, transverse section, etch: 1% Nital. 500 ×. Flattened part. More
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Published: 15 January 2021
Fig. 46 Composite micrograph showing the grain structure of aluminum alloy 7075-T6 plate. Source: Ref 8 More
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Published: 30 August 2021
Fig. 9 Microstructure of a binder jet part showing isotropic grain structure More
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Published: 01 December 2019
Fig. 7 Typical coarse transverse grain structure of a good stock pin. Original magnification 50× More
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Published: 01 December 2019
Fig. 2 Macroetched turbine blades showing characteristic grain structure for equiaxed (EQ), directionally solidified (DS), and single crystal (SX) castings. Off-axis grain boundaries in DS and SX castings significantly improve creep resistance and overall stress rupture life compared to an EQ More
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Published: 01 December 2019
Fig. 11 ( a ) Parent microstructure, Plate A; equiaxed austenitic grain structure characteristic of Grade 316L; indication of cold work (typical Plates A and B), ( b ) cracks developed in Plate A at leak location; crack formation branched and transgranular, ( c ) crack developed in Plate More
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Published: 01 December 1992
Fig. 9 Typical elongated grain structure in longitudinal cross section through severe bend area of unfractured bolt. Nital etch. More
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Published: 01 December 1992
Fig. 5 Micrograph of unaffected areas, showing the composite grain structure. Etched with glyceregia. 32×. More
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Published: 01 December 2019
Fig. 10 Optical micrographs showing typical lath martensitic structure with grain boundary decohesion at prior austenite grain boundaries (magnification 1000×) More
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Published: 01 December 1993
Fig. 14 Fine tempered martensitic structure in a vendor A bolt. ASTM grain size 9 to 10. Vilelia etch, 67× More
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Published: 01 December 1992
Fig. 5 Grain-boundary precipitation in the structure of the segment. The matrix is tempered martensite with secondary carbides. Nital etched. 310×. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... of the aluminum alloy coupling nuts was caused by stress corrosion. Contributing factors included use of a material that is susceptible to this type of failure, sustained tensile stressing in the presence of a marine (chloride-bearing) atmosphere, and an elongated grain structure transverse to the direction...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047199
EISBN: 978-1-62708-234-1
... should be preferred to extruded bar stock. Differences in grain structure of the forgings, as induced by differences in thermal-mechanical history of the forged material, can have a significant effect on susceptibility to exfoliation corrosion. Regarding thermal treatment, the results show conclusively...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001200
EISBN: 978-1-62708-221-1
... Abstract During the operation of tractors with cantilevered body, the lateral wall of the hypoeutectic cast iron cylinder blocks cracked repeatedly. Three of the blocks were examined. The grain structure of the thick-walled part consisted of uniformly distributed graphite of medium flake size...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001135
EISBN: 978-1-62708-219-8
... used in structural applications. Testing showed an increase in hardness and weight percent carbon and manganese in the banded region. Further testing revealed that the area containing the segregation and coarse grain structure had a lower than expected toughness and a transition temperature 90 deg F...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047541
EISBN: 978-1-62708-217-4
... that were within the HAZ of the adjacent weld deposit. The heat of welding had generated a coarse-grain structure with a weak grain-boundary network of ferrite that had not been corrected by postweld heat treatment. The combination of the cracks and this unfavorable microstructure provided a weakened...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001665
EISBN: 978-1-62708-231-0
... that some copper was accidentally left in the mold when the casting was poured. Liquid copper, carrying with it oxygen in solution, penetrated the austenite grain boundaries as the steel cooled. The oxygen reacted with the steel producing a network of scale outlining the austenite grain structure. When...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001475
EISBN: 978-1-62708-234-1
... initiated in the region of the tube where the dark fracture surface and columnar grain structure were evident. These features indicated the presence of a defective zone or progressive cracking which had occurred during service. Microscopic examination of sections through the zone revealed extensive creep...