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metal flow

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0089617
EISBN: 978-1-62708-232-7
... the molten metal, flowing through a trough, was poured into the mold beginning at the bell end and ending with the spigot end being poured last. After the pipe had cooled, it was pulled out from the bell end of the mold, and the procedure was repeated. Investigation supported the conclusion that failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047745
EISBN: 978-1-62708-235-8
... (better brazeability) brazed with a larger torch tip (wider heat distribution) and AWS type 3B flux (better filler-metal flow) were recommended for radar coolant-system assembly. Brazing fluxes Cooling systems Radar equipment Torch brazing 321 UNS S32100 Surface treatment related failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001601
EISBN: 978-1-62708-235-8
...Abstract Abstract Flow forming technology has emerged as a promising, economical metal forming technology due to its ability to provide high strength, high precision, thin walled tubes with excellent surface finish. This paper presents experimental observations of defects developed during flow...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046469
EISBN: 978-1-62708-229-7
... water that flowed through the tubes was generally sanitary (chlorinated) well water; however, treated recirculating water was sometimes used. Analysis (visual inspection, 9x and 75x unetched micrographs, and spectrochemical analysis) showed a thick uniform layer of porous, brittle copper on the inner...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0045992
EISBN: 978-1-62708-225-9
...Abstract Abstract After two weeks of operation, a poppet used in a check valve to control fluid flow and with a maximum operating pressure of 24 MPa (3.5 ksi) failed during operation. Specifications required that the part be made of 1213 or 1215 rephosphorized and resulfurized steel. The poppet...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001199
EISBN: 978-1-62708-235-8
... and this has been confirmed by Marchck and Draper 2 . The latter workers found that maladjustments of accumulator pressure, flow valve opening or oil level in the accumulator all contribute to the formation of metal waves. Bosley 5 has suggested that metal waves are produced by high local die...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001615
EISBN: 978-1-62708-235-8
... in the intermediate stage of the forging preform, which subsequently increased in the final stage. A high upset strain during forging, especially in the final stage, accentuated the center burst by high lateral flow of the metal. It was concluded that the center burst of the axle forging resulted from a high...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001284
EISBN: 978-1-62708-215-0
... present at the site where fracturing occurred on the other risers. Cold shuts occur during the casting process as metal flows into the mold and fails to fuse at local sites. This lack of fusion can be caused by cold metal, cold molds, and/or metal flow patterns in the mold cavity. Often, one location...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... segregation cold formed parts cracking cracks forging grain flow heat treatment hydrogen content imperfections ingot pipe laminations metalworking nonmetallic inclusions pits porosity scabs seams sheet metal forming unmelted electrodes workability WROUGHT FORMS are produced by a wide...
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
... markings showing direction of liquid metal flow (light alloys) Flow marks D 120: Surface roughness D 121 Depth of surface roughness is approximately that of the dimensions of the sand grains Rough casting surface D 122 Depth of surface roughness is greater than that of the sand...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001292
EISBN: 978-1-62708-215-0
...).∼2.34× Propagation features in the initial area of cracking revealed a strong association with the metal flow in the forging; these features included high relief, a crack shape that appeared to follow the forging flow lines, and an average plane of propagation that varied from approximately 90...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001822
EISBN: 978-1-62708-180-1
... and torsional rupture metal flow. Figure 10 shows an etched section from the central region of axle 1611 and a montage of the microstructure. The temperature in regions 1 and 2 was high enough to reaustenitize the steel. Region 3 was heated into the two-phase region, while the lower portion of the sample...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001908
EISBN: 978-1-62708-235-8
... cavities and gas holes, and most failed to meet the required mechanical properties. Heat checks are most often located on surfaces corresponding to areas in the die that are subject to high thermal stresses or where the liquid metal flows at high speeds, causing erosion of the mold or die cavity. 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001597
EISBN: 978-1-62708-236-5
... the location, direction, and nature of the segregation is further altered by the metal flow and distribution during forging. The steel supplier has claimed that this microstructural segregation containing a high carbon matrix and sulfides is typical of continuous cast material they supply. Others think...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... The numerical simulation of extrusion process and dynamic die stress state during the process provides a systematic approach for simultaneous modeling of billet deformation behavior and die stress and strain distribution during the forming process. From the point of view of metal-forming process, the flow...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
...; that is, direction the surface metal is flowing Fig. 15 A scanning electron micrograph of the details of a hole drilled with a new, sharp drill bit. Note the clean hole with only a minor amount of damage to the hole periphery. Fig. 16 A scanning electron micrograph of a hole drilled with a worn...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... without removal of material, from the wearing surface of a part or component. Similar to the other forms of failure, there are several well-defined wear failure types. The wear of metal parts is commonly classified into two categories: abrasive wear and adhesive wear, as described in the section “General...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... Light micrograph showing a very large shrinkage gap between the phenolic resin mount (PM) and a specimen of 6061-T6 aluminum etched with aqueous 0.5% hydrofluoric acid. Note the metal flow at the specimen edge (revealed using Nomarski DIC illumination) and the water stains (arrows on the aluminum...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... Flame impingement Humidity (wet/dry cycles) Galvanic differences Moisture Liquid metal Flow/flow rate Erosion Cavitation Hydrogen content Biological agents This list shows many of the environmental factors that must be kept in mind during the design process, before any...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
... that the implant was broken at the stem. Segregation, inclusions, and microconstituents are aligned and elongated in directions determined by the metal flow, resulting in mechanical fibering. Centerline segregation in the ingot caused center cracks in forging operations, and this acted as a stress concentrator...