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interdendritic stress-rupture fracture

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001758
EISBN: 978-1-62708-241-9
... at carbides and other microconstituents, especially in single crystal castings that do not possess grain boundaries. gas turbine engine components creep deformation overheating nickel-base superalloy interdendritic stress-rupture fracture stress-rupture testing stress-rupture life Cast nickel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001687
EISBN: 978-1-62708-220-4
... boundaries properties. Grain boundary sliding and dislocation motion were enhanced, causing a local increase in the steady state strain rate and the premature failure of the tube. Grain boundary sliding Plastic deformation Spalling Voids HK UNS J94224 Creep fracture/stress rupture...
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
... extensive creep cracking. The cracking was intergranular and followed the interdendritic columnar structure adjacent to the outer surface. Butt welds Castings Furnaces Pressure Weldments Fe-0.4C-25Cr-20Ni Creep fracture/stress rupture Brittle fracture During the periodical inspection...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... of interdendritic stress-rupture fracture at the trailing edge (TE) of single-crystal turbine blade casting showing creep voids on the fracture surface. (b) Scanning electron microscopy backscatter electron image of stress-rupture cracks and wrinkled aluminide coating on concave trailing-edge side of single-crystal...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
... of intermetallic particles within the intergranular and interdendritic regions. Stress Analysis As noted earlier, the component was drawn from measurements and extrapolated dimensions ( Fig. 4 ); a FEA was subsequently performed. Figure 16 demonstrates a relative-stress grayscale map of the component...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001611
EISBN: 978-1-62708-219-8
.... The transgranular quasi-cleavage fracture that was observed had no obvious initiation site, and such a fracture would only occur in the presence of a tremendously high state of stress. It should be noted that fractographic features, such as those in Fig. 5 , are often consistent with interdendritic fracture...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... with hardnesses above approximately 40 HRC. High-strength, highly stressed parts can crack and fracture as a result of hydrogen embrittlement. Failure by hydrogen embrittlement is even more likely to occur if high residual tensile stresses are present. Hydrogen-embrittlement-related failures are brittle in nature...
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
... stresses in the material. Flame cutting caused a change in the distribution of the residual stresses, which, aided by low fracture toughness due to the poor quality of the beam, resulted in failure. The failure of the I-beam was probably caused by segregation of carbon, sulfur, and phosphorus within its...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... ) that extended over the lower-right quarter of the fracture surface. Cracking then propagated in tension through sound metal (region B, Fig. 4b ) and terminated in a shear lip at the top of the eye (region C, Fig. 4b ). The stress state that produced the fracture approximated simple tension. Conclusions...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... Example 19: Failure by Stress-Corrosion Cracking of a Duplex Stainless Steel 2205 Vessel in Caustic Solution <xref rid="a0006808-ref65" ref-type="bibr">(Ref 65)</xref> Investigation Effects of Incomplete Fusion and Incomplete Penetration Example 17: Fracture of a Chip-Conveyor Pipe at a Flange...
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
... the stresses and so separation occurs at the liquid films still remaining between the dendrites [ 3 , 4 ]. “Hot tear” surfaces develop a black scale and bear dendritic imprints. Usually radiography reveals a network of incipient tears in the region where separation has occurred [ 5 ]. To check...
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
... to the slip plane causes alternate rupture and self-healing of the interatomic bonds, resulting in permanent deformation. A normal stress applied to the body causes only continued separation of atoms and therefore brittle cleavage fracture. Fig. 2 Schematic figure showing the effect of a normal stress...
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
... to be broken to permit successive movement of a dislocation along the slip plane. Similarly, estimations of a cleavage fracture stress versus experimentally determined values indicated need for a model other than simultaneous rupture of all bonds. A contemporary view of cleavage fracture is a sequential...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... in areas susceptible to tensile stresses during cooling; surface not oxidized Cold tearing C 220 Hot cracking and tearing C 221 (a) Irregularly shaped discontinuities in areas susceptible to tension; oxidized fracture surface showing dendritic pattern Hot tearing C 222 (a) Rupture...
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
... a level of ductile behavior; otherwise, once a crack is initiated it would result in instant unstable crack growth, fracturing in a macroscopic brittle manner. Unlike ductile overload, however, fatigue most often initiates and propagates at overall stresses below the yield stress. Dimple-rupture...
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
... stress concentration OVERLOAD FAILURES, from the perspective of materials failure analysts, refer to the ductile or brittle fracture of a material when stresses exceed the load-bearing capacity of the material from either excessive applied stress or degradation of the load-bearing capacity...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001111
EISBN: 978-1-62708-214-3
... strong evidence that the abnormal network provided a preferred, weak, brittle path for crack propagation in the flange, causing it to fracture at a very low stress intensity in the presence of the 40 mm (1 1 2 in.) deep edge crack. It is noteworthy that this same network was found...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... the material is stressed above or below any ductile-to-brittle transition temperature below which relatively low-energy fractures can occur. Other degradation mechanisms, such as corrosion and oxidation; stress corrosion; erosion from flowing gases, liquids, and solids; hydrogen damage; creep and stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001489
EISBN: 978-1-62708-217-4
... (Mn, Cr, Fe)S inclusions were present along with spinels. The nondeformable, rigid oxide particles are considered more undesirable than the sulfides as far as fatigue life of the component is concerned. It has been reported that the presence of sulfides may eliminate the stresses due to oxides...