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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001094
EISBN: 978-1-62708-214-3
... acceptable performance for the intended application. It was recommended that use of the 410 screws be discontinued in preference to the case-hardened carbon steel screws. Skyscrapers Steel construction 140 UNS S41000 Hydrogen damage and embrittlement Intergranular fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001619
EISBN: 978-1-62708-225-9
... approximately 140 mm (5.5 in.) in the unsplined section and was made of 4340 Ni-Cr-Mo alloy steel heat treated to a uniform hardness of HRC 31. Cracks from at least seven different origins had coalesced to produce the single large crack that resulted in failure. The origins of these cracks were on the flanks of...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0046160
EISBN: 978-1-62708-224-2
.... Axial shift of the crane wheel during operation, because of insufficient interference fit, was the major cause of fatigue cracking. Recommendations included redesigning the axle to increase the critical diameter from 140 to 150 mm (5.5 to 6 in.) and to add a narrow shoulder to keep the drive wheel from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001524
EISBN: 978-1-62708-221-1
... Abstract A 140 ft. (42.7 m) long boom on a dragline crane used in coal strip-mining operations failed. One of the principal load-bearing longitudinal beams or chords of the trussed boom had fractured adjacent to a bolt hole at a location about halfway along the length of the boom. Over the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0091402
EISBN: 978-1-62708-234-1
... C (50 to 60 deg F) and outlet temperature was 50 to 60 deg C (120 to 140 deg F). The pH of the water was 6.9. Investigation (visual inspection, chemical analysis, and 67x nital etched micrographs) supported the conclusion that the elbows had been given the usual annealing and normalizing treatment...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001400
EISBN: 978-1-62708-235-8
... −22 140 122 −18 HAZ 161 150 −11 140 140 0 3 8 in. from Weld (a) 133 132 −1 Plate Material (C) General 155 131 −24 141 130 −11 HAZ 154 138 −16 149 135 −14 3 8 in. from Weld (a) 140 124 −16 (a) corresponding to location...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089459
EISBN: 978-1-62708-235-8
... hardness of the four rods, as measured at various points with a Rockwell tester, was equivalent to 140 HB— substantially lower than the specified hardness of 160 to 205 HB. The fractures in the two failed rods were in areas of the transition regions that had been rough ground to remove flash along the...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001056
EISBN: 978-1-62708-214-3
... itself. Experimental work has confirmed the presence of fluctuations in a coolant zone with stratified temperature layers. These fluctuations are associated with variations in moderator flow, which allow thermal fatigue to be induced. Stratification is caused by the ingress of relatively cold (140 °C...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001841
EISBN: 978-1-62708-241-9
... 11 shows an SEM image of the fracture surface and revealed a fatigue-related failure. However, the source of the cyclic stress was unclear. It was noted that prior to crimping, an ultrasonic cleaning procedure had been employed. The ultrasonic cleaner was known to operate at approximately 140 kHz...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048261
EISBN: 978-1-62708-225-9
... as a result of through hardening. Dimensions given in inches The ring gear, machined from a forged blank made of 4817 steel, had been gas carburized at 925 °C (1700 °F), cooled to 815 °C (1500 °F), press quenched in oil at 60 °C (140 °F), then tempered at 175 °C (350 °F) for 1 1 2 h to...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001090
EISBN: 978-1-62708-214-3
... , Vol 11 , ASM Handbook , ASM International , 2002 , p 700 – 727 10.31399/asm.hb.v11.a0003544 A double-flanged, 80 mm (3 in.) ID stainless steel flexible pump connector failed after 48 h of service with internal water pressure ranging from 140 to 550 kPa (20 to 80 psi). The connector was...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091678
EISBN: 978-1-62708-217-4
... top was the initial fracture; arrow indicates location of a tiny region of pitting corrosion (on back side of lug) at which failure originated. Final fracture is at left. (b) Micrograph of an etched (Keller's reagent) section through surface of initial fracture showing branched cracking. 140×. A...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001282
EISBN: 978-1-62708-215-0
... solution of 10 to 20% HNO 3 , 2 to 3% HF, and water at 60 °C (140 °F) for 20 min and passivated in a solution of 10 to 20% HNO 3 and water at 60 °C (140 °F) for 30 min ( Ref 1 ). Soon after the surface treatment, component B developed severe pitting attack on both the inside and outside surfaces, but no...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047010
EISBN: 978-1-62708-234-1
... H19 tool steel 1 586 85 552 80 5 627 91 558 81 10 607 88 558 81 25 586 85 531 77 Udimet 630 1 993 144 1000 145 5 965 140 965 140 10 979 142 972 141 25 1013 147 979 142 René 41 1 683 99 696 101 5 724 105 690 100 10 690...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001246
EISBN: 978-1-62708-224-2
... the decarburized layer was about 140 kgf/mm 2 , that of the core about 197 kgf/mm and that of the solid solution varied between 266 kgf/mm 2 and 434 kgf/mm 2 at a load of 10 gf. The outer zone could be a solid solution containing carbon or the carbide Fe 3 ZnC. This layer is obviously brittle and...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001123
EISBN: 978-1-62708-214-3
... with an air pressure of 140 kPa (20 psi). Failure was indicated by leakage of the system. Fig. 1 Solenoid valve seat assembly, showing extensive cracking. The valve seat alloy was specified to be ZAMAK 3. Table 1 compares the specified composition with the actual composition of the valve...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001105
EISBN: 978-1-62708-214-3
... . mol/h) of gases were conveyed at 965 kPa (140 psig) and 635 °C (1176 °F). Three different components of the joint were submitted for investigation. Each of the components—tie rod, nut, and bellows—underwent chemical analysis. A good portion of the bar was selected for tensile testing. Portions of...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001072
EISBN: 978-1-62708-214-3
... points, which were apparently near the outer diameter. The cracks nucleated in the badly pitted and corroded areas. The disk and cover material were to be heat treated to a minimum ultimate tensile strength of 965 MPa (140 ksi), or approximately 31 HRC. This did not apply to the vanes or the fillet...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001052
EISBN: 978-1-62708-214-3
... temperature of 205 °C or 400 °F); maximum pressure of 140 kPa (20 psi) (normal pressure of 14 to 20 kPa, or 2 to 3 psi); turbine speed, 62000 rev/min; vane pass frequency, 13,433 cycles/s. The bellows material contained an abnormally high degree of titanium-base stringers. Excessive amounts of...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091318
EISBN: 978-1-62708-217-4
... welds at the outlet and HAZs be removed by abrasive blast cleaning and that the interior of the completed tanks be passivated, using either 22% HNO 3 at 60 °C (140 °F) or 50% HNO 3 at 50 °C (125 °F). Three rinse cycles of water immersion and drainage were stipulated, to be followed by final rinsing...