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crystallographic texture

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048403
EISBN: 978-1-62708-226-6
... a zone of heavily deformed grains at the fracture edge. The microstructure and the hardness of the screw corresponded to the standards. Fig. 1 Mechanically forced shearing fracture of type 316LR stainless steel screw. (a) Fracture surface with typical spiral deformation texture. SEM. (b) Close-up...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001366
EISBN: 978-1-62708-215-0
... in Fig. 6 , showing highly crystallographic morphology. Coarse-textured area is a fresh fracture created in the laboratory. Fig. 8 Scanning electron micrograph of fracture surface, with EDX results. The mud-cracked area consists primarily of base metal oxides. Microstructural Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048423
EISBN: 978-1-62708-226-6
... crystallographic fracture patterns. Grain A ( Fig. 4b ) has a relatively flat texture, but also shows crystallographically oriented structures. Grain B ( Fig. 4c ) is characterized by a staircase pattern. Material separation occurred on preferred slip planes. The fine parallel line structures that run diagonally...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001715
EISBN: 978-1-62708-219-8
... microstructure of the wire. Corrosion on the outside surface of the wire progressed into the wire along a more or less planar front, as shown in Figure 4 . The corrosion grew more rapidly around the circumference of the wire than into the wire, due to the strong crystallographic texture of the microstructure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
.... Ductile shearing fractures are characterized by a spiral texture of the fracture surface, flow lines at the fracture edges, overload dimple structure on the fracture surface, and heavily deformed microstructure at the fracture edge in longitudinal sections. Occasionally, screw heads can be sheared off...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... and K Issc Decreased resistance to fatigue crack growth Crystallographic texture in α-β titanium alloys Preferred orientation of the hexagonal α phase in microstructures with individual α and β grains Crack blunting, branching and irregularity depend on texture Complex and strong...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001660
EISBN: 978-1-62708-236-5
... fracture [ 2 ]. The mechanism for this type of fracture is theorized to be a pile-up of dislocations in a narrow band of crystallographic planes forming a dislocation channel. In the present case, channel formation (shear band) is probably related to tool geometry and deformation texture induced during...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001825
EISBN: 978-1-62708-241-9
... the outer surface of the tube. In all three transverse cracks adjacent to the header, the microscopic fracture features consisted of a feathery, crystallographic morphology. This morphology is consistent with a fatigue fracture mechanism [ 1 ]. Faint microscopic striations observed in a few areas...
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
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
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... uses the distance between crystallographic planes, that is, d -spacing, as a strain gage. This method can only be applied to crystalline, polycrystalline, and semicrystalline materials ( Ref 1 , 27 ), where thousands of grains are sampled in a typical measurement. When the material is in tension...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... in direction consistent with applied loads• Dull, fibrous fracture• Shear lips • Little or no distortion• Flat fracture• Bright or coarse texture, crystalline, grainy• Rays or chevrons point to origin • Flat progressive zone with beach marks• Overload zone consistent with applied loading direction• Ratchet...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
... to crystallographic texturing of the steel during processing. This causes the steel to exhibit secondary fractures in the plane of the plate in a brittle mode under the influence of triaxial stress created as the primary ductile fracture propagates. One characteristic of a separated fracture surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001617
EISBN: 978-1-62708-227-3
... ). For inboard couplings, on the other hand, there were generally little or no signs of corrosion on fracture surfaces, and x-ray photoelectron spectroscopy of fracture surfaces did not reveal any evidence of residual contaminants. For longitudinal cracks, the texture of the fracture surface reflected...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... Creep Visual, 1 to 50× (fracture surface) • Necking or distortion in direction consistent with applied loads • Dull, fibrous fracture • Shear lips • Little or no distortion • Flat fracture • Bright or coarse texture, crystalline, grainy • Rays or chevrons point to origin • Flat progressive zone...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... a well-defined crystallographic plane, which should not be confused with a cleavage plane, although it has the same brittle appearance. There are usually no fatigue striations associated with a stage I fracture surface. In some cases, depending on the material, environment, and stress level, a stage I...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... on the surface of a sample, as well as the ability to determine the composition of the sample and crystallographic information. Thus, the SEM provides the user with an unparalleled ability to observe and quantify the surface of a sample. Development of Scanning Electron MicroscopeTechnology Operation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
... relief, induction hardening, service temperature, thermal strains, etc.) X-Ray Diffraction Theory and Residual Stress Measurement The XRD technique uses the distance between crystallographic planes, that is, d -spacing, as a strain gage. This method can only be applied to crystalline...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1