1-20 of 36 Search Results for

porous residue

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047335
EISBN: 978-1-62708-219-8
... of cast iron pipe. Chemical analyses of the porous region had a substantial increase in carbon, silicon, phosphorus, and sulfur. The porous appearance and the composition of the soft porous residue confirmed graphitic corrosion. The selective leaching of iron leaves a residue rich in carbon, silicon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001439
EISBN: 978-1-62708-235-8
.... Metallurgical examination of the brazed joints showed them to have suffered a preferential corrosion attack. This resulted in the phosphide phase of the brazing alloy being corroded away, leaving a weak, porous residual structure. The brazing alloy was of type CP 1 as covered by BS 1845. Header and tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047332
EISBN: 978-1-62708-234-1
... areas representing graphitic residue and corrosion products that were not removed by erosion. Exposure of the pump bowl to the well water resulted in graphitic corrosion, which generated a soft, porous graphitic residue impregnated with insoluble corrosion products. Failure of the pump bowl resulted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001019
EISBN: 978-1-62708-217-4
... to extremely high temperatures, as indicated by melting in the brass components and the extreme distortion in the rollers. Microscopic examination on the crankshaft material showed it to be a good quality steel. On the other hand, the chromium plate was thick, porous, and cracked in many places, including...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001310
EISBN: 978-1-62708-215-0
... crevice attack, porous mass, and intergranular attack at the bottom of the crevice Fig. 2 SEM fractographs of the major fracture surface. (a) Typical transgranular SCC fracture. (b) intergranular attack followed by transgranular cracking. (c) Typical ductile fracture Abstract Abstract...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... the steel, i.e., it causes the precipitation of chromium carbides along the grain boundaries, with a consequent depletion of dissolved chromium in these regions and a resulting loss of corrosion resistance. In addition, the weld thermal treatment produces significant residual tensile stresses. The corrosive...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001112
EISBN: 978-1-62708-214-3
... length through the web. Detailed investigation revealed segregation of high levels of carbon, sulfur and phosphorus in the middle of the web and high residual stresses attributed to rolling during fabrication. Flame cutting caused a change in the distribution of the residual stresses, which, aided by low...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
... with a thin film of fused salt in an oxidizing gas atmosphere at elevated temperatures. This is known as high temperature or “hot” corrosion where a porous non-protective oxide scale is formed at the surfaces with sulfides in the substrate, and the mechanism of attack does not involve aqueous electrolytes [ 3...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
...) the residual SiO during induration. The corrosion problem described here is manifested on grate bars that support the charge of pellets as they pass through the high-temperature induration furnace. During the first several years of operation, the plant produced acid pellets, and the initially specified HH...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001706
EISBN: 978-1-62708-217-4
... and identify the surface residue in the corrosion pit ( Figures 12 , 13 ). The greyish areas in the Figure 12 corresponded to the aluminium-containing pigment that covered the inner and external surface of the failed truck beam. The light grey areas at the bottom of the pit shown in Figure 13 were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001179
EISBN: 978-1-62708-228-0
... and residual stresses. Connectors Drilling rigs Hydrogen sulfide Natural gas 4140 UNS G41400 Hydrogen damage and embrittlement During drilling for natural gas in the Ems region in the year 1956, considerable amounts of longitudinal cracks and transverse fractures occurred in the connecting...
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
... or metal surfaces. For example, silver nitrate tests may be performed on residues clinging to a pitted stainless steel surface to confirm the presence of chloride ions—a common cause of pitting. Wet chemical methods are often supplemented by the use of x-ray diffraction or electron probe x-ray...
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
... the layer of cadmium was porous and allowed the diffusion of hydrogen. Cadmium plating for protection against stress-corrosion cracking may not inhibit hydrogen embrittlement. Anodizing the aluminum effectively inhibits hydrogen embrittlement. The aluminum contact with stainless steel is only slightly...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001294
EISBN: 978-1-62708-215-0
... surface roughening and surface cracking. (a) 72.8 ×. (b) 560× Fig. 3 Optical micrographs of a sectioned poppet valve assembly. (a) Porous structure in the AM-355 sealing surface. 10.4 ×. (b) Porosity determined to be missing grains dislodged during polishing. 65× Fig. 4 SEM micrographs...
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
... words, the patch concrete that was installed in 1969 around the rebar was about 50% more porous than the original concrete that was removed. Surface air permeabilities were measured and are shown as a contour plot in Figure 5 . This figure shows that much of the patch concrete (at the top...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001339
EISBN: 978-1-62708-215-0
... and the white residue in the flow-impingement area Fig. 3 Weld cap at the through-wall crack location, showing branched cracking. The weld cap had a gray stain where mercury had contacted the surface. Fig. 4 Weld W-19 after it was excavated to detect the presence of mercury Fig. 5...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... becomes porous due to the formation of volatile metal chlorides. If conditions permit, evaporative weight loss can occur due to the high vapor pressures of iron and chromium chlorides. Chlorides accumulate rapidly on metallic surfaces from burning plastic waste. Typical deposits contain 21 to 27% Cl...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... 222 (a) Internal cavity or porous area along central axis Centerline or axial shrinkage B 300: Porous structures caused by numerous small cavities B 310: Cavities according to B 300, scarcely perceptible to the naked eye B 311 (a) Dispersed, spongy dendritic shrinkage within...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... cracks. Look for residual-stress indicators when sectioning ( Fig. 3 ). Document rub marks and nonuniform wear. Take care to avoid additional damage or alteration to the subject component during cleaning and sectioning. If lab-induced damage is noted, document it immediately, to minimize...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... · in./h · ft 2 · °F Calcium phosphate 3.6 25 Calcium sulfate 2.3 16 Magnetic iron oxide 2.9 20 Silicate scale (porous) 0.09 0.6 Steel 24.5–44.7 170–310 (a) Source: Ref 1 . (b) Source: Ref 3 Fig. 3 Schematic representation of the temperature profile from...