1-20 of 194 Search Results for

thermal conductivity

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046972
EISBN: 978-1-62708-217-4
.... Recommendations included application of a protective coating to the blades, provided the coating was sufficiently ductile to avoid cracking during operation to prevent surface oxidation. Such a coating would also alleviate thermal differentials, provided the thermal conductivity of the coating exceeded...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001031
EISBN: 978-1-62708-214-3
..., which caused ductility loss and grain-boundary separation. The excessive oxygen content in the liner was attributed to diffusion from an oxygen-rich environment that had resulted from nonuniform mixing of propellants. The internal oxygen embrittled the alloy and reduced its thermal conductivity, which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
...Abstract Abstract A failure analysis was conducted on a flow-sensing device that had cracked while in service. The polysulfone sensor body cracked radially, adjacent to a molded-in steel insert. This article describes the investigative methods used to conduct the failure analysis...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
...Abstract Abstract An investigation was conducted to better understand the time-dependent degradation of thermal barrier coated superalloy components in gas turbines. First-stage vanes are normally subjected to the highest gas velocities and temperatures during operation, and were thus the focus...
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
...Abstract Abstract Argonne National Laboratory has conducted analyses of failed components from nuclear power-generating stations since 1974. The considerations involved in working with and analyzing radioactive components are reviewed here, and the decontamination of these components...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
... years to approximately 9 months. Several corroded grate bars were examined metallographically and by electron microscopy to determine the causes of the accelerated corrosion. Chemical and X-ray diffraction analyses were also conducted, along with simulation tests to assess the role of alkali chlorides...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... coefficient of thermal expansion. Most heat-treating problems could be solved if this coefficient could be controlled [ 1 ]. Almost all solids expand on heating and contract upon cooling. The relationship between thermal conductivity and thermal expansion is important in designing to prevent thermal...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... analysis [ 10 ] Density 8900 kg/m 3 Module of elasticity 170 GPa Poisson’s ratio 0.31 Thermal expansion 14 E-6/°C Thermal conductivity 90.7 J/m °C Thermal capacity 444 J/kg °C The displacement boundary conditions were two types. First, the common practice of bolting...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001349
EISBN: 978-1-62708-215-0
... weld repairs, and is especially acute in the case of austenitic stainless steels, because of their higher thermal expansion and lower thermal conductivity compared with carbon steel. In the case of a similar tank in another plant, one of the critical circumferential joints was eliminated, thus...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001110
EISBN: 978-1-62708-214-3
... features revealed that failure was by thermal fatigue caused by the presence of biaxial thermal stresses on the inner surface of the tube. Because of their higher coefficient of thermal expansion and their lower thermal conductivity, austenitic stainless steels have poor resistance to thermal fatigue...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... tubes are not chosen for thermal conductivity but for strength, especially creep or stress-rupture strength. Therefore, the temperature gradient through the steel is not controlled by design but accepted as a consequence of material selection. Third, at the fluid interface with the inside-diameter...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001848
EISBN: 978-1-62708-241-9
... of failure with significant contributions from the other damage mechanisms. forging die fracture thermal cycling wear tool steel heat checking deformation optical profilometry thermal conductivity H13 (chromium hot-work tool steel) UNS T20813 CuZn39Pb3 (copper-zinc wrought brass) UNS C38500...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001571
EISBN: 978-1-62708-229-7
... material, it is heated before the A533GrB plate material. Furthermore, because the thermal conductivity of an austenitic stainless steel, like the ER308L cladding, is considerably lower than that of a low alloy steel, like A533GrB, heat transfer to the underlying plate will not be efficient. Thus...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001834
EISBN: 978-1-62708-241-9
... for tube metal temperature was 667 °C, a value considerably higher than the safe operating limit (580 °C). The Fe 3 O 4 oxide and T12 exhibited thermal conductivity values of 0.592 and 34.6 W/m °C, respectively [ 15 ]. The increasing oxide scale thickness significantly reduced the thermal conductivity...
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
... martensite that was hard (44 to 46 HRC) and brittle compared with the core hardness of 20 HRC. The martensite formed when the area adjacent to the weld metal was heated above the transformation temperature and was “self-quenched” via thermal conduction by the mass of the casting. Unwanted martensite...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... of elasticity 1.30 × 10 5 MPa Fracture load ≥9.0 kN Thermal conductivity 250 W/m-K Sliding load 1.5 kN Coefficient of thermal expansion (20–300 °C) 1.7 × 10 –5 K Tightening torque 28 N m Fig. 1 General view of the steady clamps analyzed: ( a ) views in different directions; ( b...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046418
EISBN: 978-1-62708-234-1
... temperature. The high thermal conductivity of the aluminum alloy, the rotation of the chamber, and axial flow of cooling water that was initially at room temperature provided efficient cooling of the chamber. The 3.0-cm (1.1875-in.) outer-diameter shank served as the fuel inlet, and ignition took place...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001791
EISBN: 978-1-62708-241-9
... thermal conductivity, cause lack of cooling in the tube walls, raising temperature in some sites, and as a consequence, the deformation and rupture of these ones, thus leading to the formation of the so-called knee or orange in the tubes [ 1 ]. Elimination of the soluble gases, especially carbon...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... be achieved by vigorously cooling the cold face, by using highly conductive material, and by increasing the thermal conductivity of the lining by conductive backup material. In steelmaking applications, wetting characteristics can be changed by adding nonoxides to traditional oxide compositions and using...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... of a Stainless Steel Integral-Finned Tube Improper Materials Specification and Design Fracture Appearance Thermal Stresses Mechanical Stresses Example 7: Corrosion-Fatigue Failure of U-Bend Heat-Exchanger Tubes Example 8: Fracture of a Brine-Heater Shell at Welds Mechanical Joints...