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high-integrity castings

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Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006826
EISBN: 978-1-62708-329-4
.... The base metal transformed to a rehardened and subsequently overtempered zone because of the high localized heating ( Fig. 4b ). The part failed in service at the hole. Metallographic examination revealed that the fracture initiated at the bottom of the hole. Before applying surface integrity...
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
... the liquid metal flows at high speeds, causing erosion of the mold or die cavity. 1 These defects can also be caused by extended mold usage or die wear and are open to the surface, resulting in decreased structural integrity. Gas holes (porosity) are generally formed by an excessive amount of gas...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001129
EISBN: 978-1-62708-214-3
..., untempered martensite in Fig. 11 . 2% nital etch. 315×. Chemical Analysis/Identification Spectrochemical analysis confirmed that the material was a medium-carbon steel containing chromium, nickel, and molybdenum. A high silicon content suggested that it was cast. Mechanical Properties...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091761
EISBN: 978-1-62708-229-7
... deg F). Additionally, it was suggested that fuel delivery, handling, and treatment be high quality, to maintain fuel contamination within design limits, and inlet air filtration must be designed for the coastal site. Also, changing the bucket tip by increasing its thickness and changing the casting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001602
EISBN: 978-1-62708-229-7
... corrosion conditions. The buckets are fabricated by conventional investment casting (equiaxial grains) and uncoated. One of the controlled elements that has a direct influence on the bucket behavior at high temperature is the grain size. 1 Typically, the maximum size of the grain, and sometimes...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001681
EISBN: 978-1-62708-234-1
... Casting alloys Coal gasification Co-29Cr-19Fe High-temperature corrosion and oxidation In some coal gasification processes [ 1 ], the reactor burner nozzle is a crucial component. Through it coal slurry and oxygen are injected into the reaction chamber where they react exothermically producing...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
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
... grain dimensions Severe roughness, high pressure molding defect D 130: Grooves on the casting surface D 131 Grooves of various lengths, often branched, with smooth bottoms and edges Buckle D 132 Grooves up to 5.1 mm (0.2 in.) in depth, one edge forming a fold which more or less...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001781
EISBN: 978-1-62708-241-9
... Abstract A commercial hybrid-iron golf club fractured during normal use. The club fractured through its cast aluminum alloy hosel. Optical analysis revealed casting pores through 20% of the hosel thickness. Mechanical properties were determined from characterization results, then used...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... to perform without failure. Castings are integral parts of many components and, like wrought components, they rarely fail to perform their intended functions. The failures that do occur result from service conditions, improper design and/or materials selection, manufacturing deficiencies, potential...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001307
EISBN: 978-1-62708-215-0
... to prevent these from forming. The safety of the driver of the tractor-trailer combination depended on the integrity of this spring hanger. Once broken it should have been discarded and replaced by a new one. It is not possible to achieve ductility in a malleable cast iron repair weld using a cast iron...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0006548
EISBN: 978-1-62708-180-1
... temperature at which austenite begins to form on heating Ac3 temperature at which transformation of ferrite to austenite is completed on heating ABS acrylonitrile-butadiene-styrene ACI Alloy Casting Institute AES Auger electron spectroscopy AGMA American Gear Manufacturers Asso- ciation AISI American Iron...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
...-working and hot-working applications. It reviews problems introduced during mechanical design, materials selection, machining, heat treating, finish grinding, and tool and die operation. The brittle fracture of rehardened high-speed steels is also considered. Finally, failures due to seams or laps...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
.... These high hardness requirements are needed to resist anticipated service stresses and to provide wear resistance. However, the steels must also be tough enough to accommodate service stresses and strains without cracking. Premature failure due to cracking must be avoided, or at least minimized, to maintain...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
... integrity. In this section, ways in which damage can interact at high and low temperatures are pointed out, and microstructurally based models are developed and put into parametric form. A more detailed discussion is provided in Ref 5 and 6 . These examples are meant to be illustrative...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... assembly was modified by the manufacturer, which integrated the cover plates and blade into a single casting. Example 8: High-Cycle Fatigue Failure of a Steam Turbine Blade A steam turbine, driven by a coal-fired boiler, experienced a failure from the low-pressure section of the turbine at the final...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... in design and processing was required. However, with the heightened awareness of efficient design, optimized performance, economic competition, environmental impacts, safety concerns, and legal liability, current methods of materials selection are viewed more and more as a simultaneous and integral part...
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
... and processing was required. However, with the heightened awareness of efficient design, optimized performance, economic competition, environmental impacts, safety concerns, and legal liability, current methods of materials selection are viewed more and more as a simultaneous and integral procedure of the entire...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... techniques. For example, EBM of titanium alloy results in finer structure compared to conventional casting techniques; corrosion resistance of EBM Ti-6Al-4V is different than wrought forms ( Ref 28 ). Another advantage of the extremely high build temperature in the EBM systems over the SLM systems...