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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001142
EISBN: 978-1-62708-228-0
...Abstract Abstract Several newly developed liquid propane gas (LPG) cylinders made from Fe-0.13C-0.42Mn steel failed, each fracturing in the longitudinal direction. One of the cylinders was thoroughly analyzed to determine the cause. Deep-drawing flaws were observed on the inner wall...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001446
EISBN: 978-1-62708-234-1
...Abstract Abstract A 2 ft. diam 20 ft. long cylinder with a wall thickness of 1 in. used for the transportation of a compressed gas failed by cracking. The cylinder was forged in a low ally steel. The working pressure was 3000 psi and it had been in service for about seven years. A longitudinal...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001318
EISBN: 978-1-62708-215-0
...Abstract Abstract Failure of three C22000 commercial bronze rupture discs was caused by mercury embrittlement. The discs were part of flammable gas cylinder safety devices designed to fail in a ductile mode when cylinders experience higher than design pressures. The subject discs failed...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001373
EISBN: 978-1-62708-215-0
.... Second-phase lead particles also allow it to be easily machined. These valves are typically installed on compressed gas cylinders. There are two outlet ports: one feeds the regulator and the other is connected to a pressure relief fitting. Both are normally machined with external threads. Upon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0047263
EISBN: 978-1-62708-218-1
... section through the defect indicated shrinkage porosity. This defect was found to interconnect the water jacket and the exhaust gas flow chamber. No cracks were found by magnetic-particle inspection. The gray iron cylinder head had a hardness of 229 HRB on the surface of the bottom deck...
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
... carburized. The cylinder in which the spool fitted was made of 1117 steel, also gas carburized. Investigation (visual inspection, low magnification images, 400x images, metallographic exam, and hardness testing) supported the conclusion that momentary sliding contact between the spool and the cylinder wall...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001667
EISBN: 978-1-62708-235-8
... of engineering materials, is presented. As an example, the materials and metallographic techniques employed in an actual on-site investigation of a gas tungsten-arc weldment joining two large diameter Ti-6Al-4V alloy cylinders are discussed in depth to illustrate what can be accomplished. Cylinders Field...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047297
EISBN: 978-1-62708-235-8
... predominated ( Fig. 3c ). The matrix structure consisted of pearlite, with approximately 70% ferrite ( Fig. 4a ). At the region of the observed gas defect, carbides were observed in the microstructure ( Fig. 4b ). Fig. 2 Microstructures of the cracked door-closer cylinder casting. (a) Fracture region...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001140
EISBN: 978-1-62708-227-3
... be determined employing the “leak-before-break” design philosophy, developed using fracture mechanics, to eliminate the possibility of catastrophic ruptures. Gas cylinders Sea water Al-5Mg Mixed-mode fracture Stress-corrosion cracking Introduction Failure Analysis Characterization of Cracking...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001440
EISBN: 978-1-62708-235-8
... a welded-on patch plate or to employ one of the high-strength, non-metallic adhesives. Explosions Gas cylinders Soldered joints Tensile stress 50Pb-50Sn Plate steel Intergranular fracture Liquid metal induced embrittlement Reference is made in other cases in this series of Reports...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001488
EISBN: 978-1-62708-236-5
... that the explosion took place. The cylinder used by the operator for re-charging the receiver contained not air but oxygen. Compressed air Diesel engines Oxygen Gas cylinder steel (Other, miscellaneous, or unspecified) failure While an attempt was being made to start the diesel engine of a dragline...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091362
EISBN: 978-1-62708-220-4
.... Fourth, a manifold gas system should not be used to supply shielding and backing gas. Individual argon gas cylinders have been found to provide optimal performance. A weld button spot test should be performed to confirm the integrity of the argon cylinder and all hose connections. In this test, the weld...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... by mercury embrittlement. The discs were part of a flammable gas-cylinder safety device designed to fail in a ductile mode when cylinders experience higher-than-design pressures. The subject discs failed prematurely ( Fig. 2 ) below design pressure in a brittle manner. Fractographic examination using SEM...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... failures are relatively rare. One report is provided in Ref 11 , which describes the failure of three C22000 commercial bronze rupture discs by mercury embrittlement. The discs were part of a flammable-gas cylinder safety device designed to fail in a ductile mode when cylinders experience higher-than...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... natural gas (CNG) type. As a result, the mean power of the engine increased from 100 to 110 kW, which can be a cause of higher thermal stresses. Fig. 1 Cracked zone on the cylinder head The bolt type that was tightened in the hole was DIN-906 which has a conical shape. In Fig. 2...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001707
EISBN: 978-1-62708-217-4
... and cleavage like features. The cracking was followed by fatigue in one case and catastrophic failure in the other. Hydrogen embrittlement was identified as the most likely mechanism of failure. Aircraft components Cylinders Ejector pistons Landing gear PH 13-8Mo UNS S13800 Mixed-mode fracture...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001844
EISBN: 978-1-62708-241-9
.... This oversight combined with the observation of intergranular fracture surfaces and the presence of secondary microcracks in the case layer point to hydrogen embrittlement as the primary cause of failure. It is likely that hydrogen absorption occurred during the gas carburizing process. cylindrical spiral...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001408
EISBN: 978-1-62708-220-4
...Abstract Abstract Initially, two vertical double-acting two-stage compressors delivering chlorine gas at a pressure of 100 psi appeared to be running satisfactorily. About six months later the LP piston-rod of the No. 2 compressor failed due to burning, the compressor being worked double-acting...
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
..., causing loss of flow control of the hydraulic oil. The rotating spool in the valve was made of 8620 steel and was gas carburized. The cylinder in which the spool fitted was made of 1117 steel, also gas carburized. Visual examination disclosed that the side-rail extrusions, which had the I-beam shape...
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
... thousand miles of operation. When the engine was dismantled, it was found that the outer spring on one of the exhaust valves was too short to function properly. The short steel spring and an outer spring taken from another cylinder in the same engine (both shown in Fig. 6 ) were examined in the laboratory...