1-20 of 438 Search Results for

electronic properties

Sort by
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006827
EISBN: 978-1-62708-329-4
... between metal workpieces. For electronic manufacturing, solder alloys with lead or copper are commonly used; they have a relatively low melting point (~180 to 220 °C, or 355 to 430 °F), good mechanical properties for impact and fatigue resistance, and decent thermal and electrical conductivity ( Ref 1...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001298
EISBN: 978-1-62708-215-0
... by acid etching. Post-plating baking operations subsequently reduced the fatigue strength of the spar. Chemical etching Fatigue strength Mechanical properties Rotor blades 7075-T7351 UNS A97075 Pitting corrosion Fatigue fracture Surface treatment related failures Background...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001522
EISBN: 978-1-62708-235-8
... assembly revealed tensile properties well below the allowable design values. Radiology and CT evaluations revealed no casting defects. Optical microscopy revealed porosity uniformly distributed throughout the casting on the order of 0.1 mm pore diam. Scanning electron microscopy revealed elongated pores...
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
... consideration during design ( Ref 4 , 16 ). Thus, developing suitable engineering properties in AM parts requires robust qualification during design. Table 1 summarizes and briefly describes the various types of metal AM technologies. Laser PBF, electron beam melting, and binder jet 3D-printing methods...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001297
EISBN: 978-1-62708-215-0
... between the lead wool ballast and the aluminum spar inner surface. The pitting initiated fatigue cracking which led to the spar failure. Crack initiation Mechanical properties 2014-T652 UNS A92014 Corrosion fatigue Fatigue fracture Pitting corrosion Galvanic corrosion Background...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001372
EISBN: 978-1-62708-215-0
... Abstract A coupling in a line-shaft vertical turbine pump installed in a dam foundation fractured after a very short time. The coupling material was ASTM A582 416 martensitic stainless steel. Visual, macrofractographic, and scanning electron microscopic examination of the coupling showed...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006913
EISBN: 978-1-62708-395-9
.... Electrical Tests In the electrical and electronics industry, the tests explained in the following section are widely used to determine the electrical properties of insulating materials, particularly plastics. Dielectric Breakdown Voltage and Dielectric Strength For materials used in applications...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001839
EISBN: 978-1-62708-241-9
... Abstract Several stainless steel coils cracked during a routine unwinding procedure, prompting an investigation to determine the cause. The analysis included optical and scanning electron microscopy, energy-dispersive x-ray spectrometry, and tensile testing. An examination of the fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0089338
EISBN: 978-1-62708-224-2
... stringers and ferrite bands in the base metal matrix. The material used for this application was very anisotropic, exhibiting substantially poorer long and short transverse mechanical properties than longitudinal properties. Lifting eye Manganese sulfide Nonmetallic inclusions 1144 UNS G11440...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001134
EISBN: 978-1-62708-214-3
... Abstract An ASTM A391 steel chain link of an over head hoist failed catastrophically, causing damage to both property and personnel. Macrofractography identified the sequence of fractures within the chain link. The first fracture occurred at the welded joint, a second occurred opposite the weld...
Image
Published: 30 August 2021
Fig. 17 Summary of stress ( S ) versus cycles to failure ( N ) ( S - N ) data for laser powder-bed fusion (PBF), electron beam melting (EBM) PBF, and directed-energy deposition (DED) wire at R = 0.1. Metallic Materials Properties Development and Standardization (MMPDS) data for cast More
Image
Published: 30 August 2021
Fig. 16 Materials property space for room-temperature yield strength versus elongation of additively manufactured (AM) alloys and conventionally manufactured alloys (dashed lines). (a) Steels, nickel alloys, aluminum alloys, TiAl, and CoCrMo. (b) Ti-6Al-4V alloys (powder-bed fusion, or PBF More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001124
EISBN: 978-1-62708-214-3
... Procedure and Results Nondestructive Evaluation Liquid Penetrant Inspection Liquid penetrant inspection of suspected wire joint locations (from file markings) revealed cracks at the joints, in addition to fractures in the adjacent joints ( Fig. 1 ). Surface Examination Scanning Electron...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006915
EISBN: 978-1-62708-395-9
..., and (c) syndiotactic polystyrene Inherent Flexibility Polymer chains move by rotations about single bonds. The freedom of these rotations is determined by the electronic properties of the bond as well as the steric and electrostatic interferences from adjacent and nearby atoms. A random...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001838
EISBN: 978-1-62708-241-9
... though banded) distribution of bulky and brittle primary titanium carbonitrides. Grain boundary embrittlement caused by secondary carbide precipitates. This alloy is both ductile and tough and not at all susceptible to this kind of material property degradation. Also, excessive secondary carbide grain...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001357
EISBN: 978-1-62708-215-0
... growth Scanning Electron Microscopy/Fractography Figure 2 indicates the zones examined by scanning electron microscope (SEM) fractography. Figures 3 and 4 show patterns of stable and unstable crack growth. The stable crack growth was intercrystalline in nature, while the final fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047105
EISBN: 978-1-62708-225-9
... forcefully in the direction of the load, causing substantial damage to other machinery components in the vicinity. The failed component, which was 43 cm (17 in.) in diameter, was machined from 4140 plate and heat treated to 34 to 36 HRC. Analysis (visual inspection, composite micrographs, scanning electron...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001645
EISBN: 978-1-62708-232-7
..., carburizing grade steel and had failed in service within a year of fitting to a repaired shaft. Microscopic observations of both the broken roller and inner-race samples revealed subsurface cracking and preponderance of brittle oxide and other macroinclusions. Electron probe microanalysis studies confirmed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0089663
EISBN: 978-1-62708-229-7
... Abstract A crack was discovered in a cast steel (ASTM A 356, grade 6) steam turbine casing during normal overhaul of the turbine. The mechanical properties of the casting all exceeded the requirements of the specification. When the fracture surface was examined visually, an internal-porosity...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001819
EISBN: 978-1-62708-241-9
... ) (in Portuguese) 14. Wouters R. , Froyen L. : Scanning electron microscope fractography in failure analysis of steels , Mater. Charact. , 36 , 357 – 364 ( 1996 ) 10.1016/S1044-5803(96)00070-8 15. Properties and Selection : Stainless Steels , Tool Materials and Special-Purpose...