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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001448
EISBN: 978-1-62708-229-7
..., embrittlement of this type was the primary cause of the breaking off of the type rivet heads. Nothing was observed in the course of the examination that suggested caustic cracking. Aging Boiler plate Rivets Rimming steel Brittle fracture When the lagging was removed from the longitudinal seam...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... for glass/vinyl ester pultruded rods immersed in porewater solution at three different temperatures Abstract Accelerated life testing and aging methodologies are increasingly being used to generate engineering data for determining material property degradation and service life (or fitness...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006920
EISBN: 978-1-62708-395-9
... General catalytic cycle of a hindered amine light stabilizer Abstract This article describes the processes involved in photochemical aging and weathering of polymeric materials. It explains how solar radiation, especially in the UV range, combines with atmospheric oxygen, driving photooxidation...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006932
EISBN: 978-1-62708-395-9
... and high thermal expansion properties, and the variation of mechanical properties with temperature. It discusses the combined effects of thermal stresses and orientation that result from processing conditions. The article also describes the effect of aging on properties of plastics. It explains the use...
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Published: 01 June 2019
Fig. 4 Behavior of bolts with different aging treatments was studied under varying loads (see table). Permanent plastic deformation occurs at a load slightly above 11,000 lb regardless of heat treatment. Failure was in the threaded portion. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001452
EISBN: 978-1-62708-232-7
... embrittlement had developed following plastic straining and service at a temperature of 260 deg C (500 deg F) suggested that failure resulted from strain-age embrittlement. Brackets Ovens Rimming steel Brittle fracture A bracket which formed part of the carrier of a chain conveyor system used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001590
EISBN: 978-1-62708-228-0
... Abstract This case study demonstrates that Alloy 601 (UNS N06601) is susceptible to strain-age cracking. The observation illustrates the potential importance of post weld heat treatment to the successful utilization of this alloy in certain applications. Steam reforming Inconel 601 UNS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091640
EISBN: 978-1-62708-229-7
... (1600 psi). The valve stem was reported to have been solution heat treated at 1040 +/-14 deg C (1900 +/-25 deg F) for 30 min and either air quenched or oil quenched to room temperature. The stem was then reportedly aged at 550 to 595 deg C (1025 to 1100 deg F) for four hours. Investigation (visual...
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Published: 01 June 2019
Fig. 2 TGA scans for the automotive part at three ages and for the two control samples. More
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Published: 01 June 2019
Fig. 3 DSC scans for a control sample and the automotive part at three ages. More
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Published: 01 June 2019
Fig. 1 Stress-corrosion cracking of a solution-treated and aged Ti-6Al-4V Apollo service propulsion system (SPS) fuel pressure vessel during a system checkout test. Fluid test medium was methanol. (a) Cross section adjacent to weld in cracked vessel. 65×. (b) Another crack near the same weld More
Image
Published: 01 June 2019
Fig. 7 Microstructure (with cleavage crack) of an aged notched bar impact test specimen. Normalized at 900° C, 10% deformed and aged 1 2 h at 250° C. 500 × More
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Published: 01 June 2019
Fig. 8 Ductility versus hydrogen content for aged uranium-0.8 titanium tested at two strain rates. More
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Published: 01 June 2019
Fig. 27 Comparison of bend tests showing brittleness resulting from strain-ageing More
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Published: 01 December 2019
Fig. 2 Stages of graphitization of a medium carbon steel aged at constant temperature, showing the effect of temperature during aging More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001455
EISBN: 978-1-62708-234-1
... are mostly produced by extrusion. Some material processed this way has been prone to exfoliation corrosion. Extended aging for 24 h at a temperature of 185 deg C (365 deg F) virtually suppresses the tendency for exfoliation corrosion to develop. Also, the use of a sprayed coating, either of aluminum or Al...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001263
EISBN: 978-1-62708-224-2
.... In addition, the nature of the fracture and the results of the notched bar impact tests showed that in spite of the high C-content, the eye bolt had become brittle as a result of aging. Cleavage Eyebolts Materials selection Strain aging St 37-2N Brittle fracture After several years' use...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001727
EISBN: 978-1-62708-225-9
... vehicle failed at Cape Kennedy ( Fig. 2 ). They were made of 17-4 PH in the H900 condition — a martensitic, age-hardening alloy. In the H900 condition (solution treated and aged 1 hr at 900 F), the material had nominal strengths of 180,000 psi yield and 200,000 psi tensile. The alloy's composition: 0.07 C...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001583
EISBN: 978-1-62708-217-4
... at the required aging temperature and follow-up mechanical testing. Army aviation Flight safety critical component Metallurgical investigation PH 13-8Mo UNS S13800 Heat treating-related failures Metalworking-related failures Background The U.S. Army Aviation and Missile Command (AMCOM...
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
... of the appropriate implants and operation technique, not only the type of fracture and its location but also the condition of the soft tissue, the structure and consistency of the bone, the age and condition of the patient, and any present complication must be considered. Even when the best possible reconstruction...