1-20 of 38 Search Results for

inert gas fusion analysis

Sort by
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006766
EISBN: 978-1-62708-295-2
... covers the operating principles, applications, advantages, and disadvantages of optical emission spectroscopy (OES), inductively coupled plasma optical emission spectroscopy (ICP-OES), X-ray spectroscopy, and ion chromatography (IC). In addition, information on combustion analysis and inert gas fusion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047641
EISBN: 978-1-62708-235-8
... Abstract A Ti-6Al-4V alloy pressure vessel failed during a proof-pressure test, fracturing along the center girth weld. The girth joints were welded with the automatic gas tungsten arc process utilizing an auxiliary trailing shield attached to the welding torch to provide inert-gas shielding...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... exist in all AM parts from processing defects such as lack of fusion and porosity. The porosity levels observed in correctly printed parts are currently understood to be from entrapped inert gas in gas-atomized powder feedstock. Powder porosity can be transferred into AM parts if the short melting times...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001839
EISBN: 978-1-62708-241-9
... sources of hydrogen are considered as are remedial measures for controlling hydrogen content in steels. steel coils delayed hydrogen cracking austenitic stainless steel grain facets stepwise microcracking inert gas fusion analysis stacking fault energy 0.1%C-14.7%Cr-9.3%Mo-0.2%Si (low nickel...
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
... laboratory. Any sacrifice in the quality of the microstructural information obtained is undesirable. This paper will focus on the equipment and procedures used in an on-site metallographic analysis of two gas tungsten-arc welded, large diameter, titanium alloy (Ti-6Al-4V) cylinders. In this case, a blue...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... may cause density variations on a radiograph. When possible, they should be removed before a weld is radiographed; when impossible to remove, they must be considered during radiography interpretation. Subsurface Discontinuities Subsurface discontinuities detectable by radiography include gas...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... commonly used purge gas, but helium, argon, air, and oxygen can also be used for specific purposes. Often, two consecutive heating runs are performed to evaluate a sample. A controlled cooling run is performed after the initial analysis to erase the heat history of the sample. The first heating run...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001815
EISBN: 978-1-62708-241-9
..., microvoid dimple morphology of a lab-induced failure from a service pin Chemical analyses were conducted on multiple service-fractured, lab-fractured, and good stock pins by electrolytic plating and inert gas fusion techniques. The sample chemistries were all found consistent with C11000 copper...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... include: Underbead cracks Gas porosity Inclusions—slag, oxides, or tungsten metal Incomplete fusion Inadequate penetration Solidification cracks, liquation cracks Failure to meet strength, ductility, or toughness requirements is another cause for rejection of weldments. Details...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001041
EISBN: 978-1-62708-214-3
... fatigue strength improvement techniques have been developed, such as toe grinding ( Fig. 19 ) and tungsten-inert gas (TIG) dressing ( Fig. 20 ). These techniques remove the microscopic intrusions at the weld toe. Other techniques, such as hammer peening, shot peening, or overloading, rely...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
.... The weight of the evaluated material can decrease due to volatilization or decomposition or increase because of gas absorption or chemical reaction. Thermogravimetric analysis can provide valuable information regarding the composition and thermal stability of polymeric materials. The obtained data can...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006931
EISBN: 978-1-62708-395-9
..., attenuated total reflectance, and combined technologies such as gas chromatography FTIR and thermogravimetric analysis (TGA)/FTIR; solution and solid-state nuclear magnetic resonance (NMR) spectroscopy; ultraviolet-visible spectroscopy; mass spectroscopy; and Raman spectroscopy. Only the characterization...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
... to be related to the MWD of but with different types of dependence for various regions of behavior ( Ref 31 ) Liquid Chromatography Liquid chromatography (LC) allows determination of MW and MWD of polymers. The methods are referred to as GPC and HPLC. The analysis of polymers by conventional gas...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... effects are of significant concern in failure analysis and prevention. Microbially induced corrosion problems afflict water-handling operations and manufacturing processes in oil and gas production, pipelining, refining, petrochemical synthesis, power production, fermentation, waste water treatment...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... reaction occurs in which hydrogen gas is evolved and the zinc dissolves, forming an acidic aqueous solution of zinc chloride (ZnCl 2 ): (Eq 1) Zn + 2 HCl → Zn Cl 2 + H 2 Because the chloride ion is not involved in the reaction, this equation can be written in a simplified form...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001690
EISBN: 978-1-62708-226-6
... composition (by a Shimadzu X-ray fluorescence spectrometer, Thermo Jarrell Ash plasma atomic emission spectrometer-ICP, LECO direct combustion analyzer, Shimadzu flame atomic absorption spectrophotometer-AAE, and LECO inert gas fusion determinator). Femoral Compression Plates Both femoral compression...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... Most common in Comments Hydrogen embrittlement High-strength steels and heavily cold-worked low-carbon steels, ambient temperatures Needs sustained stress. Not relevant for impact-induced cracking Hydrogen-induced blistering Low-strength steels at ambient temperatures Hydrogen forms gas...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... temperatures Needs sustained stress. Not relevant for impact-induced cracking Hydrogen-induced blistering Low-strength steels at ambient temperatures Hydrogen forms gas-filled blisters Cracking from precipitation of internal gaseous hydrogen Heavy steel sections Induced by high-temperature exposure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... and, if necessary, fill it with an inert gas. Desiccants or vapor-phase corrosion inhibitors can also be added, and the heat exchanger can then be sealed until start-up. After start-up, consideration must be given to the many unscheduled shutdowns that generally affect the early life of any new plant. Suitable...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... it with an inert gas. Desiccants or vapor-phase corrosion inhibitors can also be added, and the heat exchanger can then be sealed until startup. After startup, consideration must be given to the many unscheduled shutdowns that generally affect the early life of any new plant. Suitable precautions must be taken...