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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001283
EISBN: 978-1-62708-215-0
... Abstract During the preproduction stages of forging, an initial batch of 50 mm (2 in.) diam Al-4Cu alloy (L77) extruded bar stock material was found to be cracking randomly. Failure analysis was conducted to determine the metallurgical factors underlying the phenomenon. Microexamination...
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Published: 01 January 2002
Fig. 14 A local area of fatigue striations on an extruded 2024 aluminum alloy component More
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Published: 01 January 2002
Fig. 36 (a) Central bursting during extruding of AISI 4615 alloy steel specimen was promoted by (b) the presence of bainite and martensite (arrows point to microcracks in the martensite) in the as-rolled stock. Specimen etched with 4% picral, followed by 2% nital More
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Published: 01 January 2002
Fig. 2 Buckled flange (lower arrow) of an extruded aluminum section deliberately loaded with a lateral force (upper arrow). Source: Ref 3 . More
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Published: 01 January 2002
Fig. 47 AISI H13 mandrel used to pierce and extrude brass that failed after 298 pushes, about 30% of its expected life. The disk shown below, cut from the mandrel, was macroetched (10% aqueous nitric acid), revealing a heavily decarburized surface. The decarburization occurred during service. More
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Published: 01 June 2019
Fig. 1 Extruded right-hand side rail of aluminum alloy 6061-T6 that failed from ductile overload fracture. Dimensions given in inches More
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Published: 01 June 2019
Fig. 3 Blistering on 2024-T4 extruded section after chemical milling. ×12. More
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Published: 15 January 2021
Fig. 14 Local area of fatigue striations on an extruded 2024 aluminum alloy component More
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Published: 15 January 2021
Fig. 2 (a) Buckled flange (lower arrow) of an extruded aluminum section deliberately loaded with a lateral force (upper arrow). Source: Ref 4 . (b) Medium-length tube tested to buckling instability on special-purpose-designed test machine. Source: Ref 3 More
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Published: 15 January 2021
Fig. 45 (a) Central bursting during extruding of AISI 4615 alloy steel specimen was promoted by (b) the presence of bainite and martensite (arrows point to microcracks in the martensite) in the as-rolled stock. Specimen etched with 4% picral, followed by 2% nital More
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Published: 01 December 2019
Fig. 7 Variation of die life cycles (number of billets extruded) with temperature ( a ) and strain rate ( b ) More
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Published: 01 December 2019
Fig. 8 Variation of die life cycles (number of billets extruded) with die bearing length ( a ) and die fillet radius ( b ) More
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Published: 01 December 2019
Fig. 9 Variation of die life cycles (number of billets extruded) with extrusion ratio ( R ) based on failure data of 50 dies collected from extrusion industry. Die life corresponding to R = 25 is shown by dashed line More
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Published: 01 December 1993
Fig. 6 SEM micrograph of a satisfactorily heat-treated Al-4Cu alloy extruded bar, showing absence of black, segregated particles. More
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Published: 30 August 2021
Fig. 47 AISI H13 mandrel used to pierce and extrude brass that failed after 298 pushes, approximately 30% of its expected life. The disk, cut from the mandrel, was macroetched (10% aqueous nitric acid), revealing a heavily decarburized surface. The decarburization occurred during service. More
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Published: 15 May 2022
Fig. 2 Typical extruder hardware More
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Published: 30 August 2021
Fig. 14 Centerline chevron cracks in an extruded bar. Courtesy of Bharat Forge Limited, Pune, India More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0090436
EISBN: 978-1-62708-233-4
... couplings contained a significant level of contamination, polypropylene and nylon 6/6. The source of the polypropylene was likely the purging compound used to clean the compounding extruder. The origin of the nylon 6/6 resin was unknown but may represent a previously compounded resin. Contaminants...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001617
EISBN: 978-1-62708-227-3
... Abstract Failures of various types of hydraulic couplings used to connect pipes in a naval vessel are described and used to illustrate some of the general procedures for failure analysis. Cracking of couplings, which were manufactured from nickel-aluminum- bronze extruded bar, occurred in both...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001650
EISBN: 978-1-62708-230-3
... Abstract Several air heat exchangers failed in service in a pulp and paper operation. The tubes were made from AISI 316 stainless steel with an extruded aluminum fin mechanically bonded to the outside. Originally, the failures were blamed on poor tube to header welds. The units were sent back...