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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0092148
EISBN: 978-1-62708-235-8
...Abstract Abstract Occasional failures were experienced in spool-type valves used in a hydraulic system. When a valve would fail, the close-fitting rotary valve would seize, causing loss of flow control of the hydraulic oil. The rotating spool in the valve was made of 8620 steel and was gas...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046371
EISBN: 978-1-62708-234-1
.... The bearing had not seized, and there was no evidence of heat discoloration in the galled areas. The inner cone, made of modified 4720 steel and carburized for wear resistance, rode on an AISI type 630 (17-4 PH) stainless steel spacer. Consequently, it was desirable to determine whether the galled spots...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089646
EISBN: 978-1-62708-235-8
...Abstract Abstract Nodular cast iron crankshafts and their main-bearing inserts were causing premature failures in engines within the first 1600 km (1000 mi) of operation. The failures were indicated by internal noise, operation at low pressure, and total seizing. Concurrent with the incidence...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001799
EISBN: 978-1-62708-241-9
... the bearings led to the transfer of material. gear shaft fatigue fracture seizing high-strength low-alloy steel scoring marks deformed grains uniaxial fatigue testing macrofeatures 4145 (high-strength low-alloy steel) UNS G41450 Introduction Service History Observations and Analyses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001147
EISBN: 978-1-62708-219-8
... that the cracks were initiated and caused to grow by some combination of corrosion fatigue and stress-corrosion cracking, the former probably being predominant. Bridges Eyebars Seizing Wrought iron Corrosion fatigue Stress-corrosion cracking Introduction General Design Features Failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001575
EISBN: 978-1-62708-217-4
... discoloration too; - no seizing effect was detected. Fig. 2 Micrographic Inspection and Thermal Alteration Evaluation The evident thermal discoloration and the blockage of bushing to the gears' shafts had surely affected microstructure of base materials by overheating. It is very...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
..., whereas the cylinder of the seized valve (b) had much retained austenite that transformed to martensite in service, resulting in size distortion (growth). 500× Fig. 12 Part substitution that resulted in a distortion failure. (a) Distorted commercial cap screw that was used as a replacement...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
..., whereas the cylinder of the seized valve (b) had much retained austenite that transformed to martensite in service, resulting in size distortion (growth). Original magnification: 500× Abstract Abstract Distortion often is observed in the analysis of other types of failures, and consideration...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001363
EISBN: 978-1-62708-215-0
.... It is believed that at this time the bearing seized and spun on the inner housing; this is supported by the evidence of extreme heat exposure observed on the inner diameter and housing of the inner race, as shown in Fig. 4 and 8 . The heat generated by the seizure further elevated the temperature...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... , Tribol. Int. , Vol 38 , 2005 , p 277 – 282 10.1016/j.triboint.2004.08.011 48. “ Seizing ,” NTN Global , https://www.ntnglobal.com/en/products/care/damage/branded.html , accessed Jan 10, 2019 49. “ How to Read a Damaged Piston ,” Madsen’s Shop & Supply Inc. , http://www.tmadsens1.com...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
... in the rapid softening of these parts with subsequent plastic deformation. On occasions, if the applied torque is sufficient to overcome the inherent resistance of a seized bearing or, alternatively, causes the shaft to rotate within the inner race, the heat generated may result in temperatures approaching...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... steel. The element of time that is introduced with exposure to heat requires an assessment of the service life of the structure (or at least of the fastener) and of the amount of this life that will be spent at elevated temperature. Galling and seizing are serious considerations...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
... seized; and ensuring that the coupling contained no defects in material, geometry, or installation. The failure analyst may pursue inquiries to determine whether the machine had been loaded beyond the limits specified in the user’s manual or otherwise misused in violation of the manual. With a clear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
.... A freely rotating bore requires a good lubrication film, or seizing and galling may result. The bore used as a bearing outer race must be as hard as any standard bearing surface and is subject to all conditions of rolling contact, such as fatigue, pitting, spalling, and galling. The bore that is press fit...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006837
EISBN: 978-1-62708-329-4
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
.... Another example of such a failure is the inability of an integrated circuit to function reliably. In the next level of severity of failure, a system or component is inoperable ( Ref 13 ), such as a pump shaft fracture that causes the impeller to seize or a loss of load-carrying capability...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
..., a system or component is inoperable ( Ref 1 ), such as a pump shaft fracture that causes the impeller to seize or a loss of load-carrying capability of a structural bolt in service due to fracture. Failure analysis is a systematic, methodical process to determine the physical causes of problems...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... the deposits, and providing greater clearance. Adhesive Wear of Shafts Adhesive wear, sometimes called scoring, scuffing, galling, or seizing, is the result of microscopic welding at the interface between two mutually soluble metals, such as steel on steel. It frequently occurs on shafts where...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1