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alpha-beta alloys

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001684
EISBN: 978-1-62708-225-9
... examination centered on corrosion of the brass components. The seat and shaft were alpha brass, with a hardness of 64 and 79 DPH, respectively. A nut held the shaft onto the seat, and was alpha-beta brass with a hardness of 197 DPH. Welded on the end of the shaft was a ring of hard (DPH 294) alpha-beta brass...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001103
EISBN: 978-1-62708-214-3
... ) indicate that the most aggressive corrosion agent capable of producing stress cracking (in environments where mercury is known to be absent) is ammonia and that, in alpha-beta alloys of the type discussed here, the crack path is usually intergranular with respect to the alpha grains and occasionally...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001660
EISBN: 978-1-62708-236-5
...-6Al-4V alpha-beta alloys is extremely temperature dependent [ 4 ]. Below 704 C (1300 F) plastic deformation is highly localized (forming shear bands); while above this temperature, uniform deformation increases dramatically. The evidence of cold work in the thread roots of the failed pins indicates...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001411
EISBN: 978-1-62708-234-1
... susceptible than those having a lower zinc content, e.g. the 80:20 alloys. In the case of alloys of the 60:40 type, which show an alpha plus beta structure, the grains of the beta constituent (which have the higher zinc content) may suffer prior dezincification. This case relates to the failure of a welded...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001410
EISBN: 978-1-62708-220-4
.... In the case of alloys of the 60:40 type, which show an alpha plus beta structure, the grains of the beta constituent (which have the higher zinc content) may suffer prior dezincification. This example concerns a brass elbow which formed one termination of an internal steam heating coil (dia. 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001667
EISBN: 978-1-62708-235-8
... presence of an alpha case in an alpha-beta titanium alloy, such as Ti-6Al-4V, can cause a reduction in the mechanical properties of the material [ 1 ]. The potential absorption of oxygen into titanium surfaces is greatly increased during welding operations unless the environment is strictly controlled...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001782
EISBN: 978-1-62708-241-9
... operations are not carefully controlled. In addition, when welding alphabeta titanium alloys, shielding atmospheres are required to inhibit weld contamination and the development of brittle structures. Titanium alloy driver heads are hollow shells constructed from three or four separate forged pieces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001649
EISBN: 978-1-62708-234-1
... scale. A significant texture sufficient to result in the observed fracture topography was not present. Fig. 9 Micrograph of the failed right-hand bolt microstructure (Kroll's Reagent; 350× magnification at 6.6 in. width). The duplex microstructure consists of elongated alpha (light) in a beta...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
..., concentrated chloride solutions; chloride-contaminated steam; hot caustic solutions High-nickel alloys High-purity steam Alpha brass Ammoniacal solutions, chloramine, amine Aluminum alloys Aqueous chloride, bromide, and iodide solutions Titanium alloys Aqueous chloride, bromide, and iodide...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... analysis, metallographic analysis, and simulated-service tests. It provides case studies for the analysis of SCC service failures and their occurrence in steels, stainless steels, and commercial alloys of aluminum, copper, magnesium, and titanium. aluminum alloys austenitic stainless steel carbon...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001843
EISBN: 978-1-62708-241-9
... Handbook , ASM International , 1990 , p 840 ­ 868 . 10.31399/asm.hb.v02.a0001097 The element tin has three crystalline forms: Grey (alpha) tin—cubic crystal structure and is a semiconductor White (beta) tin—body centered tetragonal structure and in the form of metallic tin. Rhombic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001409
EISBN: 978-1-62708-229-7
... the alpha variety, e.g. the 70:30 type, are more susceptible than those having a lower zinc content, e.g. the 80:20 alloys. In the case of alloys of the 60:40 type, which show an alpha plus beta structure, the grains of the beta constituent (which have the higher zinc content) may suffer prior...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001801
EISBN: 978-1-62708-241-9
.... orthopedic fixation device fracture surface damage titanium alloy notches roughness metallography fatigue crack growth rates ASTM F136 (alpha-beta titanium alloy) UNS R56401 References 1. http://www.scoliosis.org/resources/medicalupdates/instrumentationsystems.php . Accessed...
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
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... dezincified area and darker band on the inside diameter. Ferric chloride etch. Original magnification: 5×. (d) Two-phase brass. The beta phase dissolves first. Ferric chloride etch In incipient melting, the metal is exposed to a temperature close to but below the nominal melting point. When grain...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001558
EISBN: 978-1-62708-217-4
... was cross-forged at a starting temperature of 1227 K, which is in the middle of the alpha-beta two-phase field (beta transus = 1294K). After forging, the part was vacuum-annealed at 1033 K, air cooled, surface-machined to remove scale, and inspected for cracks; none were found. Forging prolongations...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
..., Japan ), 2010 , p 314 – 321 11. Price W. and Bailey R. , “ Bismuth—Its Effect on the Hot-Working and Cold-Working Properties of Alpha and Alpha-Beta Brasses ,” Technical Publication 1441, American Institute of Mining and Metallurgical Engineers , 1942 12. Chen L.-C. and...
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
... maintenance activities. 3 This radionuclide also normally accounts for the bulk of the radioactivity present on failed components. On rare occasions, contamination by radionuclides emitting alpha radiation may also be present on components. This condition generally indicates contamination from the nuclear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... combinations thereof. Possible root causes also include design mistakes such as inadequate stress analysis, alloy selection, improper mechanical/thermal processing, improper assembly, and failure to accommodate an adverse operating environment. Fractography provides a unique tool to determine potential causal...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
..., alloy selection, improper mechanical/thermal processing, improper assembly, and failure to accommodate an adverse operating environment. Fractography provides a unique tool to determine potential causal factors, such as: Whether a material was used above its design stress Whether the failed...