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grain size

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Published: 01 December 2019
Fig. 5 Distribution of ferrite, pearlite size, and grain size in surface and deep of sample More
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Published: 01 June 2019
Fig. 5 Photomicrograph of the new drain tube. Note small grain size with preferred orientation consistent with cold working. More
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Published: 01 June 2019
Fig. 6 Microstructure of the material with grain size reticle overlay. The grains measured between ASTM Nos. 2 and 3. Marble's Reagent. Mag. 100× More
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Published: 01 June 2019
Fig. 4 Difference in grain size of the coarse- and fine-grained zones. Magnification = 50 × More
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Published: 01 June 2019
Fig. 7 Dependence of babbit wear intensity on β-phase grain size at dry sliding More
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Published: 01 December 2019
Fig. 4 Surface of the tube showing fine grain size More
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Published: 01 December 2019
Fig. 1 Grain size versus time in the roughing process of steels with and without Nb 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 1993
Fig. 7 Results of in situ metallographic examination. (a) Grain size variations in the lower tubular portion. (b) Grain size variations in the HAZ of the upper brazed joint More
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Published: 01 December 1993
Fig. 6 Same section shown in Fig. 5 , revealing the characteristic grain size and distribution More
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Published: 01 December 1992
Fig. 12 Section from part 6, etched in Keller's reagent to show fine grain size. 345×. More
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Published: 01 December 1992
Fig. 2 (a)Macrophotograph of outboard flap support fracture. As-cast grain size can be construed from fracture surface contrast. (b) Diagram of significant features; arrows show fracture directions. Areas 1, 2, and 3 represent cleavage “flakes”. Cross-hatched area around flake 1 is overload More
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Published: 01 June 2019
Fig. 5 Influence of austenite grain side d γ and pearlite colony size d ρ on fatigue crack initiation life N i More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045988
EISBN: 978-1-62708-235-8
... specs, but hardness and grain size were different. Reheat treatment of full-width specimens showed that coarse grain size (ASTM 2 to 3) was responsible for the brittle fracture, and excessively high temperature during austenitizing caused the large grain size in the failed strap. The fact...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001266
EISBN: 978-1-62708-215-0
..., which suggested fatigue fracture. Metallographic examination of samples revealed an extremely large grain size and corroborated fatigue fracture. Chemical analysis indicated that the material conformed to the requirements for type 316L stainless steel. Substandard-size tensile bars machined from another...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048791
EISBN: 978-1-62708-234-1
... of a sectioned and oxalic acid etched sample. The grain size was found to exceed the ASTM standard. No indications of sensitization were observed during testing with practice A of ASTM A 262. Definitive evidence of contaminants to support SCC as the failure mechanism was not disclosed during analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048757
EISBN: 978-1-62708-234-1
... by subjecting the overheated tube to a flattening test that the tube no longer met ASTM B 337 specifications. Large grain size and numerous needlelike hydride particles were disclosed in the microstructure of the overheated tube. Heating to approximately 815 deg C was revealed by the presence of the flaky oxide...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048091
EISBN: 978-1-62708-224-2
... and welding. The metal was identified to be 1020 steel. It was indicated by the coarse as-rolled structure (grain size of ASTM 00 to 4) of the base metal that the weldment (stop block and guide) had not been normalized. The brittle failure was evaluated to have been initiated at a metallurgical and mechanical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... to occur. The failure was hydrogen-assisted and was attributed to stress corrosion cracking (SCC) and/or corrosion fatigue (CF). Contributing to the failure was the fact that the material grain size was approximately double the required size, most likely caused from higher than nominal temperatures during...
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
... higher than specified by the ASTM standards. The fatigue crack growth rate through this area was much faster than expected. All of these property changes resulted from increased carbon levels, higher yield strength, and larger than normal grain size. Bridges (structural) Grain size Segregation...