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deoxidation

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Published: 01 December 1992
Fig. 3 Area of possible fatigue interaction observed on sample A after deoxidation treatment. 12×. More
Image
Published: 01 December 1992
Fig. 5 Low-magnification SEM micrograph of sample B after deoxidation; circles represent areas of EDS scans. 6.2×. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001256
EISBN: 978-1-62708-218-1
... of foreign bodies, resulting from steel making/deoxidizing/teeming stages. The occasionally globular nature of the foreign particles suggested these were formed at the liquid condition of the steel. The ratio of Mn-Si as seen on electron probe microanalysis also suggested the globules high in Mn content...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0090974
EISBN: 978-1-62708-235-8
... and mechanical properties of the casting did not satisfy the design requirements. Recommendations included exerting better composition control, primarily with regard to melting, deoxidation, and nitrogen control. Better deoxidation practice was recommended to generate the more desirable Mn-S inclusion morphology...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001254
EISBN: 978-1-62708-225-9
... Abstract The specified elongation of 10% could not be achieved in several hollow pinion gear shafts made of cast Cr-Mo steel GS 35 Cr-Mo 5 3 that were heat treated to a strength of 90 kp/sq mm. The steel was melted in a basic 3 ton arc furnace and deoxidized in the furnace and in the pan...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001180
EISBN: 978-1-62708-219-8
... cracking. Although copper is not susceptible in the pure state, it is prone to stress-corrosion cracking under tensile stress in the presence of other elements in a damp ammoniacal atmosphere. The material was not defective, but a phosphorus-deoxidized copper type. The residual phosphorus combined...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0091699
EISBN: 978-1-62708-219-8
... Abstract Eddy-current inspection was performed on a leaking absorber bundle in an absorption air-conditioning unit. The inspection revealed crack-like indications in approximately 50% of the tubes. The tube material was phosphorus-deoxidized copper. Investigation (visual inspection, chemical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001251
EISBN: 978-1-62708-235-8
... cast tensile specimens and some forcibly-broken pieces of the flanges of armature yokes made of cast steel GS C 25 according to DIN 17 245 were investigated. Microscopic examination showed that the cause of damage was the superabundant use of aluminum as deoxidizer. According to recommendations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001252
EISBN: 978-1-62708-235-8
... with 42 kg of 75% ferrosilicon and 12 kg aluminum additions, alloyed with 160 kg of 80% ferromanganese, and finally deoxidized in the ladle with 42 kg calcium silicon. For metallographic examination a plate approximately 100 mm thick was cut parallel to one of the eight planes. Platelet-like particles...
Image
Published: 01 January 2002
-deoxidized 0.5% Mo cast steel to nodular graphite. More
Image
Published: 15 January 2021
-deoxidized 0.5% Mo cast steel to nodular graphite. More
Image
Published: 01 January 2002
for graphitization is for conversion of one-half of the carbon in aluminum-deoxidized 0.5% Mo cast steel to nodular graphite ( Ref 10 ). More
Image
Published: 30 August 2021
Fig. 9 Austenite grain growth in a fine-grained 0.5% C hypoeutectoid steel (aluminum deoxidized). 0.43C-0.23Si-0.75Mn (wt%). (a) Austenitized for 1 h at 850 °C, cooled at 300 °C/h. Austenite grain size: ASTM No. 7, 180 HV. Picral. 100x. (b) Austenitized for 1 h at 900°C, cooled at 300 °C/h More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001051
EISBN: 978-1-62708-214-3
... a tight, black adherent oxide, was transgranular, and had a woodlike appearance. Five various EDS scans were made on the fracture. No definite corrodants were found, but traces of copper, sulfur, tin, and silicon were present, in addition to the normal metallic constitutents. After deoxidation treatment...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001326
EISBN: 978-1-62708-215-0
... and ladle refractories, furnace and ladle slags, and deoxidants containing calcium. Refractories normally contain a large MgO content; the absence of magnesium in the inclusions indicates that the refractories did not play a role. Deoxidants containing calcium normally contain significant amounts of silicon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001217
EISBN: 978-1-62708-235-8
... . The Institute was asked to test them. The steel for the casting in question had been deoxidized in the laddle with 0.29 kg aluminum per ton of raw steel. The casting had been cooled to 300° C in the mold, which took approximately two weeks. Of this time the cooling from 12001 to 900° C, i.e. through...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001489
EISBN: 978-1-62708-217-4
... that the former precipitate out during cooling from high-temperature silicates. 7 Cristobalite has been reported to exist in high siliceous deoxidation products. 6 The presence of aluminum along with Ca and Si in some inclusions indicated that aluminum-bearing calcium silicide probably had been used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001175
EISBN: 978-1-62708-231-0
... a lye-resistant steel should be used. The “Izett”-steel, developed by A. Fry in the Fried. Krupp works in Essen at the beginning of the 1920s, which was deoxidized (denitrated) with aluminium, has a high resistance against intercrystalline stress corrosion, which can even further be improved...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001259
EISBN: 978-1-62708-233-4
... as those of shipments S1 and S2 ( Figs. 8 , 9 , 10 ). The tendency to stronger decarburization is therefore caused already by the melting and deoxidation process. The case structure as well as the core structure of the wires of shipment G was finer grained after decarburization annealing than those...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001338
EISBN: 978-1-62708-215-0
... compared with the tube that leaked. The microstructure was typical of phosphorus-deoxidized copper in the annealed or lightly cold-worked condition, with an average grain diameter of 0.045 mm (0.002 in.). Discussion Figures 1 , 2 , 3 , 4 , 5 show the very extensive pitting damage observed...