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specimen size

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Image
Published: 01 January 2002
Fig. 3 Illustration showing how depth of focus is dependent on specimen pixel size and aperture size More
Image
Published: 15 January 2021
Fig. 3 Illustration showing how depth of focus is dependent on specimen pixel size and aperture size 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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001171
EISBN: 978-1-62708-219-8
... the precipitation (including reduction of carbon content, appropriate heat treatment, cold work of steel, reduction of austenitic grain size and stabilizing elements) were described. The presence of microcracks due to highly localized heat concentrations with consequent thermal expansion and considerable shrinkages...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001128
EISBN: 978-1-62708-214-3
... in the composite specimen was approximately aligned with the fusion line area to simulate the steam pipe cracking conditions. The resulting fracture morphology is shown in Fig. 2 . Dimpled fracture was found to be characteristic of fracture toughness specimens. However, the size of dimples varied...
Image
Published: 01 January 2002
reagent showing fine grain size and hydride particles (faint black needles). 200×. (e) Overheated tube specimen etched in Kroll's reagent showing large grain size and hydride particles (small needles). 200×. (f) Transverse section of overheated tube specimen at outside surface showing 0.05-mm (0.002 More
Image
Published: 01 June 2019
showing fine grain size and hydride particles (faint black needles). 200x. (e) Overheated tube specimen etched in Kroll's reagent showing large grain size and hydride particles (small needles). 200x. (f) Transverse section of overheated tube specimen at outside surface showing 0.05-mm (0.002-in.) thick More
Image
Published: 30 August 2021
tube specimen etched in Kroll’s reagent showing fine grain size and hydride particles (faint black needles). Original magnification: 200×. (e) Overheated tube specimen etched in Kroll’s reagent showing large grain size and hydride particles (small needles). Original magnification: 200×. (f) Transverse More
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
... cracks. 1 1 4 ×. (c) High-temperature (370 °C, or 700 °F) tension-test specimens: top, specimen from normally heated tube; bottom, specimen from overheated tube. (d) Normally heated tube specimen etched in Kroll's reagent showing fine grain size and hydride particles (faint black needles). 200x...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... require multiple samples Properties can be specimen-size dependent Unidirectional compression Yield strength Tensile strength Ductility Components may not be conducive to a test specimen Anisotropic materials require multiple samples Bend Ductility Bending is not a mechanical property...
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
... the specimen and notched. The specimens were soaked in liquid nitrogen and broken. The large grain size of the material was apparent on the intergranular fracture surface ( Fig. 1 ). A rust-colored oxide film was visible on the part of the fracture surface that corresponded to the cracked volume of material...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001108
EISBN: 978-1-62708-214-3
.... Fig. 5 Etched microstructure of the transverse section of the curved specimen near the outer surface. In both the curved and straight specimens, grain size was not homogeneous. Near the outer surface, the grains were smaller, reaching sizes as small as ASTM 8. Grain size increased towards...
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
... than the voids from MnS-matrix debonding) ( Fig. 13 ). Fig. 13 A dual-dimple size observed in a 4150 steel. Material was isothermally transformed at 190 °C (375 °F) and was not tempered. Tested as a Charpy V-notch specimen at 0 °C (30 °F). Source: Ref 30 There is also a particle size...
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
... carbide particles (resulting in smaller dimples than the voids from MnS-matrix debonding), as shown in Fig. 13 . Fig. 13 Dual-dimple size observed in 4150 alloy steel. Material was isothermally transformed at 190 °C (375 °F) and was not tempered. Tested as a Charpy V-notch specimen at 0 °C (32 °F...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001533
EISBN: 978-1-62708-225-9
... at a great magnification (5000×) shows that the main α phase is a fine-dispersed phase ( Fig. 1b ) with components of size 0.5 to 1 µm. At some areas of the specimen, crack formations can be seen on a β-phase crystal ( Fig. 1a ). Pores are also locally observed, which are probably gas bubbles ( Fig. 1c...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... sprayed coatings, printed circuit boards, electronic components, bone, teeth, and so on. Mounting The primary purpose of mounting metallographic specimens is for convenience in handling specimens of difficult shapes or sizes during the subsequent steps of metallographic preparation and examination...
Image
Published: 01 January 2002
Fig. 11 Structure of a specimen cut from the area near the center of the fracture of axle 2028. (a) Macrograph of specimen. Actual size. (b) Montage showing the microstructure in regions 1 and 2. 14× More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... the chemist. The key items that should be discussed are the specimen size required, turnaround time, the cost, the accuracy and precision of the analysis and whether the chemist has a proven “digestion” method for any wet analysis being contemplated. The OES and GDS methods generally require a 6 to 13 mm...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... for sectioning sintered carbides, ceramic materials, thermally sprayed coatings, printed circuit boards, electronic components, bone, teeth, and so on. Mounting The primary purpose of mounting metallographic specimens is for convenience in handling specimens of difficult shapes or sizes during...
Image
Published: 01 January 2002
Fig. 10 Structure of a specimen cut from the area near the center of the fracture of axle 1611. (a) Macrograph of specimen. Actual size. (b) Montage showing the microstructure from the fracture surface inward to just above region 3.9× More