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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001560
EISBN: 978-1-62708-217-4
... logarithmic current converter interface, and a H.P. 7044 x-y recorder comprised the test equipment. ASTM standard G-59-78 entitled “Standard Practice for Conducting Potentiodynamic Polarization Resistance Measurements” was followed as the test procedure, with the exception that the three electrodes were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048840
EISBN: 978-1-62708-220-4
..., nickel, copper, and chromium indicated no abnormality. The steel was not required to be fine grained; in addition, the soluble aluminum content responsible for controlling grain size and reducing susceptibility to strain aging varied among the plates, but was very low for three of the plates (<0.005...
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
... be classified into three broad categories: planar imperfections, volumetric imperfections, and geometrical imperfections. These spatial categories, as discussed subsequently, all have distinct mechanical characteristics in terms of weld reliability and performance. Fig. 2 Schematic of defects...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001820
EISBN: 978-1-62708-241-9
...Abstract Abstract A group of control valves that regulate production in a field of sour gas wellheads performed satisfactorily for three years before pits and cracks were detected during an inspection. One of the valves was examined using chemical and microstructural analysis to determine...
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
.... Typically, hydrogen content is measured using a dedicated instrument, and nitrogen and oxygen content are measured using another dedicated instrument, although commercial instruments with all three analytes are available. Fusion parameters for hydrogen analyses are significantly different from the other two...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001702
EISBN: 978-1-62708-219-8
... was cut 5.6 m (18.5 ft) shy of abutment No. 1. Once at ALRC, the 14.4 m (47 ft) beam was cut approximately in half and three 0.3 m (1 ft) slices were cut from the center of the beam for cathodic polarization experiments and chloride migration studies that will be the subject of a future report. Steel H...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001065
EISBN: 978-1-62708-214-3
... specimens were machined, six each from the piping material, the elbow material, and the weld material. All of the subsized specimens were machined in accordance with ASIM E 23, “Standard Methods for Notched Bar Impact Testing of Metallic Materials.” Three of each group of six specimens were tested at room...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001507
EISBN: 978-1-62708-217-4
... investigation determined that the four-bladed propeller from the left inboard engine had separated in flight, subsequently impacting the left outboard engine, causing its propeller to separate also. Three years later, the left inboard propeller hub was recovered. All four blades had separated through the shank...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001769
EISBN: 978-1-62708-241-9
... coupons of 1 × 1 cm dimension with an extended stem of 15-cm length were used for polarization and impedance studies. Specimens were polished to mirror finish using emery paper 1/0 down to 4/5. The specimens were also finally degreased with trichloroethylene, followed by deionized water. Three specimens...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046044
EISBN: 978-1-62708-235-8
... in the metal of the three cracked components. Bend tests verified the conclusion that the most likely mechanism of delayed quench cracking was isothermal transformation of retained austenite to martensite under the influence of residual quenching stresses. Recommendations included modifying the quenching...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... the susceptibility to pitting and crevice corrosion of metals and alloys coupled in chloride solutions. In addition, this technique is valuable in predicting galvanic corrosion among three or more coupled metals or alloys. Polarization measurements can be made by generating stepped potential or potentiodynamic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047512
EISBN: 978-1-62708-219-8
... attached to the column wall by intermittent fillet welds. Two short lengths of angle beam that span the joint were welded to the walls of the column. Three butts, two triangular and one rectangular, were made in this region to remove samples for investigation. Study of the samples established...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048814
EISBN: 978-1-62708-229-7
... spaced striations typical of fatigue are evident. Three samples were also taken from cracked regions of another steam generator. They exhibited similar features, including varying degrees of pitting at the origin of the cracks ( Fig. 3 ). Examination of the leading edges of the cracks by EDS...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... techniques and critical potentials are used to measure the susceptibility to pitting and crevice corrosion of metals and alloys coupled in chloride solutions. In addition, this technique is valuable in predicting galvanic corrosion among three or more coupled metals or alloys. Polarization measurements...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001580
EISBN: 978-1-62708-229-7
... is back-filled with helium and welded closed. The Gas Tungsten Arc Welding (GTAW) autogenous process is used to close the canister. The canister is clamped in place and the GTAW electrode is moved around the outside of the canister. Before the continuous weld is started, three tacks approximately 90...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
... stresses for the three assumed flaw lengths. The predicted failure pressure for the corroded area is based on treating the loss of metal as a part-through or surface flaw in the pipe ( Ref 3 ). A grid is drawn on the corroded area, and remaining wall-thickness measurements are made from which a contour...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... vibration, which induces the formation and collapse of cavities in the fluid, and synergistic corrosion attack. Figure 4(e) illustrates a rubber wheel abrasion tester, which can be used to perform abrasion-corrosion tests (three-body abrasion) in accordance with ASTM G 105 ( Ref 30 ) using a sand...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001433
EISBN: 978-1-62708-235-8
... From the remaining uncracked portion of the butt weld, two strips were taken for bend tests, these being tested over a radius of three times the wall thickness with the root in tension. Both fractured through the weld before reaching an angle of 90°. Examination of the fracture faces, which were...
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
...Abstract Abstract A nozzle in a wastewater vaporizer began leaking after approximately three years of service with acetic and formic acid wastewaters at 105 deg C (225 deg F) and 414 kPa (60 psig). The shell of the vessel was weld fabricated from 6.4 mm (0.25 in.) E-Brite stainless steel plate...
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
...) (a) Determined by combustion methods. (b) Determined by gravimetric methods. (c) Determined by x-ray diffraction. (d) Layer too thin and fragile to measure its thickness Results of longitudinal tensile test Table 3 Results of longitudinal tensile test Specimen Yield strength, 0.2...