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Boundary sliding

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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
... 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 The petrochemical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001011
EISBN: 978-1-62708-229-7
... transfer zone of the coil. It showed that many damage mechanisms may combine in the transition from fracture initiation to final failure. The presence of grain boundary sliding as an indication of creep damage was useful in the characterization of the stress level as high and showed that the process of...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001736
EISBN: 978-1-62708-220-4
... mechanism, namely grain boundary sliding, relating to the periodic nature of the loading, with high residual stresses being present. Grain boundary sliding Petrochemical equipment Transfer piping Welded joints 316 UNS S31600 Creep fracture/stress rupture Leakage was detected at the welds...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001291
EISBN: 978-1-62708-215-0
... Abstract Examination of several fighter aircraft main landing gear legs revealed unusual cracking in the hard chromium plating that covered the sliding section of the inner strut. The cracking was associated with cracks in the 35 NCD 16 steel beneath the plating. A detailed investigation...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001816
EISBN: 978-1-62708-241-9
.... structural components superplastic deformation boundary sliding dislocation creep high-strength low alloy steel decohesions traction testing grain size elongation Ti-Nb microalloyed ultrafine-grained steel (UGS steel, general) high-strength low-alloy steel (HSLA steel, general) A...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001004
EISBN: 978-1-62708-229-7
... RTE fracture, initiation and propagation of microcracks are rate controlling while at high temperatures the nucleation and growth of creep cavitation, dislocation mobility and grain boundary sliding are important. Wilkinson et al ( 6 ) observed that the ductility of P-doped 1 1 4 Cr1Mo...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001675
EISBN: 978-1-62708-220-4
... external cracks by grinding. Fig. 6 Details (three views at increasing magnification) of remnant external cracks adjacent to the repair weld (unetched material). The grain boundary creep pore was formed by grain boundary sliding. Fig. 7 Details of cracking shown in Figure 5 with the...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001848
EISBN: 978-1-62708-241-9
... thermal fatigue crack network. Another zone of the die surface showed the appearance of a thermal fatigue network with plastic deformation. In this region of the die surface, characterized by short sliding distances and local stress concentrations, temperature gradients during heating and cooling within...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001801
EISBN: 978-1-62708-241-9
... Annealed Figures 2 and 3 showed the fractured rods and their mating surfaces. The general location of the crack initiation sites were indicated by black arrows. Rod “A” exhibited a large amount of rubbing/sliding as one broken end moved out of place and slid over the other end that was fixed in...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
... radial crack progression; note the presence of ratchet marks indicating multiple-origin surface crack initiation and ( b ) detail of ( a ); note the presence of fatigue progression marks (beach marks) Optical examination of the surface (roll surface) of the fragment revealed a sliding wear pattern...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001786
EISBN: 978-1-62708-241-9
... chuck), bed, saddle (cross slide, swivel top slide, and apron) and tailstock as shown in Fig. 1 . The main spindle has a range of 18 spindle speeds from 10 to 500 RPM ( Table 1 ). Fig. 1 Short Bed Heavy Duty Lathe Table 1 Specifications of the lathe Specification Value...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001710
EISBN: 978-1-62708-229-7
... L-Reactor basin, an attempt was made to lift one of the four racks coupled together out of the basin using a chain and hoist arrangement. A T-bar and grooved channel coupled the racks together on each side. The rack did not freely slide in the channel connecting the two racks and the remaining racks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001527
EISBN: 978-1-62708-224-2
... arrangement or construction. Unlike most other metallic components, rope wires are stressed alternately in tension, compression, torsion, and shear. The wires and strands are designed to slide in relation to each other, distributing the complicated applied stresses more effectively. For this reason, wire rope...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
... intergranular Fig. 14 A distinct transition from IG fracture to quasi cleavage could be observed at the boundary of the thumbnail Fig. 15 The case core/core fracture transition in axle #3 exhibits no stretch zone or crack tip ductility. Core fracture was by cleavage Steel axle #4...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001817
EISBN: 978-1-62708-241-9
.... They concluded that poor inspection and fatigue due to decarburized cracks were responsible for the failure. Mapelli and Barella [ 5 ] studied the failure of a cable way rope. They found that the failure was initiated from excessive pressure applied on the rope and consequently, sliding between inner...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001451
EISBN: 978-1-62708-224-2
... of 3 4 in. diameter. As work hardening by pressure alone did not simulate the conditions to which the surface of the hook had been subjected in service, where abrasion due to sliding of steel ropes, rings, etc., over the wearing surface of the hook plays an important part, the ball was...