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Grain boundaries

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045918
EISBN: 978-1-62708-235-8
... cleaning procedures to remove any trace of the cleaning acids be used. Auger electron spectroscopy Contaminants Grain boundaries Rocket nozzles Scanning electron microscopy Nb-106 Stress-corrosion cracking Intergranular fracture Since electron microscopy for the evaluation of fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001217
EISBN: 978-1-62708-235-8
... Abstract In a housing made of cast steel GS 20MoV12 3, weighing 42 tons, precipitates were found on the austenitic grain boundaries during metallographic inspection. According to their shape and type they were recognized as carbides that precipitated during tempering. In addition, a much...
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Published: 01 June 2019
Fig. 4 Micrograph showing grain boundaries and grain boundary attack. More
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Published: 01 June 2019
Fig. 2 Copper showing cuprous oxide at grain boundaries. × 320. More
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Published: 01 June 2019
Fig. 7 Crack and precipitates at primary grain boundaries. Unetched longitudinal section. 100 × More
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Published: 01 June 2019
Fig. 6 Oxide precipitates at austenitic grain boundaries 3 mm under surface, etch: Nital.200 × More
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Published: 01 June 2019
Fig. 8 MnS inclusions and ferrite network at the austenite grain boundaries in longitudinal section through the starting point of the weld seam, Etch: picral. 500 × More
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Published: 01 June 2019
Fig. 4 Preferential attack along grain boundaries. (×50) More
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Published: 01 June 2019
Fig. 5 Grain boundaries adjacent to pits shown by electrolytic etching (×100) More
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Published: 01 June 2019
Fig. 19 Optical micrograph showing an apparent darkening at the grain boundaries in the highest-dose region of the shell 1 More
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Published: 01 June 2019
Fig. 7 Precipitates in grain boundaries and planes, unetched section of outer zone of flange disk. 1500 × More
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Published: 01 June 2019
Fig. 8 Precipitates in grain boundaries and planes, unetched section of outer zone of flange disk. 1500 × More
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Published: 01 December 1992
Fig. 3 Microstucture of defective tube surface, showing grain boundaries outlined by carbides, with oxide attack at surface. Vilella's reagent. 250×. More
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Published: 01 December 1993
Fig. 5 Intergranular cracks propagating along prior-austenite grain boundaries (etch: picric acid + wetting agent). 630× More
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Published: 01 December 1993
Fig. 7 Micrograph showing grain boundaries with carbide precipitates and a homogeneous precipitation of gamma phase. inside the grains. More
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Published: 01 June 2019
Fig. 2 Copper in scale deposits and along grain boundaries. (×300). More
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Published: 01 June 2019
Fig. 16 Showing fissures located at grain boundaries × 500 More
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Published: 01 June 2019
Fig. 18 Decarburisation proceeding from grain boundaries × 1000 More
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Published: 01 June 2019
Fig. 19 Decarburisation proceeding from grain boundaries × 1000 More
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Published: 01 June 2019
Fig. 3 Showing copper in scale and along grain boundaries adjacent to rupture. (×100). More