Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    The determination of fracture strains of growing surface oxides on mild steel at high temperatures (1975)
    Springer
    Oxidation of metals 9 (1975), S. 161-169 
    Details
    ISSN: 1573-4889
    Keywords: fracture ; oxides ; steel ; high temperatures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A new technique for measuring the tensile properties of surface coatings at high temperatures is described. It is shown to be capable of measuring the properties of growing surface scales on metals and has been applied initially to the measurement of fracture strains of growing surface oxides on mild steel at high temperatures. The fracture strains determined ranged from 1.1×10−4 to 2.3×10−4 over the temperature range 600–900°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00613230
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Diffusion bonding of ferritic oxide dispersion strengthened alloys to austenitic superalloys (1996)
    Springer
    Journal of materials science 31 (1996), S. 4493-4501 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The superior high temperature mechanical strength and oxidation resistance of ferritic oxide dispersion strengthened (ODS) tubular alloys are compromised by the difficulties encountered in joining. Conventional fusion welding techniques generate a weld fusion zone which is devoid of the mechanical strength exhibited by the base material. Therefore, more sophisticated solid state joining techniques, such as diffusion bonding, must be employed when joining ODS materials. This paper describes a series of solid state diffusion bonding experiments carried out between two tubular ferritic ODS alloys and two high temperature austenitic alloys. Careful control of bonding conditions produced pressure retaining joints between one of the tubular ODS alloys and both austenitic alloys. The successful joint design was incorporated into the manufacture of a tubular creep component, which enabled a series of internally pressurized creep tests to be carried out. The microstructure developed at the bond interface of each of the four separate material couples is described and the high temperature performance of the pressure retaining joints is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00366345
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Assessment of notched tubular ferritic oxide-dispersion-strengthened components subjected to multiaxial creep loading at 1100°C (1989)
    Springer
    International journal of fracture 82 (1989), S. 115-129 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Notched tubular components of a ferritic oxide-dispersion-strengthened material, MA 956, were subjected to multiaxial creep loading at 1100°C by applying a constant internal pressure. The components proved to be extremely insensitive to circumferential notches of up to 80 percent of the wall thickness due to the high axial creep rupture strength of this material. However, the components were sensitive to both externally and internally axially aligned notches, and displayed similar stress rupture behaviour but consistently longer rupture lives than plane components at the same ligament stress level. Failure was found to be due to strain controlled cavitation in the ligament rather than as a consequence of creep crack growth from the notch. A direct current/potential drop method was shown to provide a reasonable indication of the development of cavitation in these tests. It is shown that the low ductility failure of notched MA 956 components is best described by a creep fracture mechanism rather than by fracture mechanics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00034659
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Measurement of the Mechanical Properties of Growing Surface Films in oxidising environmentsVortrag, gehalten auf der Arbeitstagung der Arbeitstagung der Arbeitsgruppe „Korrosion durch heiße Gase und Verbrennungsprodukte“ am 16. und 17. Dezember 1971 in Düsseldorf. (1972)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 23 (1972), S. 773-776 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Messung der mechanischen Eigenschaften von in oxydierender Umgebung entstehenden OberflächenfilmenDie mechanischen Eigenschaften von Oberflächenzunder auf Eisen und Nickel wurden mit Hilfe einer Vibrationstechnik schon früher bei hohen Temperaturen während des Wachstums bestimmt. Die Möglichkeit der Anwendung dieser Methode zur Untersuchung anderer Systeme wird erörtert und besonders die Anwendung auf Hochtemperaturlegierungen wird untersucht. Der Einfluß von Temperatur, Oxidationsgeschwindigkeit und Oxidstabilität auf die Ergebnisse werden erörtert und der E-Modul des Oxidzunders auf Nimonic 90 wurde in einem größeren Temperaturberich bestimmt.
    Notes: The mechanical properties of surface scales on iron and nickel have been previously measured, during growth at high temperatures, using a vibrational technique (1,2). The feasibility of using this technique to study other systems is discussed and, in particular, its application to high-temperature, oxidation rate and oxide stability on the results are considered and values of the Youngs modulus of the oxide scale on Nimonic 90 over a range of temperatures have been determined.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19720230906
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    The influence of silicon and yttrium on isothermal scaling of an austenitic Fe-Cr-Ni alloy (IN 519) at 1000 °C (1983)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 34 (1983), S. 446-450 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Einfluß von Silicium und Yttrium auf die isothermische Verzunderung einer austenitischen FeCrNi-Legierung (IN 519) bei 1000 °CSowohl Silizium als auch Yttrium beeinflussen das Verzunderungsverhalten von austenitischen FeCrNi-Legierungen in Luft hoher Temperatur. Silizium fördert die Bildung und Erhaltung eines kontinuierlichen Chromoxidzunders, während Yttrium die Haftfestigkeit der Zunderschicht erhöht. Unter isothermischen Bedingungen wird bei 1000°C durch mindestens 0,8% Silizium die Verzunderungsgeschwindigkeit der Gießlegierung Fe 24Cr24Ni dadurch verringert, daß zusätzliche Zentren für die seitliche Ausbreitung der Chromoxidschicht geschaffen werden. Yttrium führt zur Bildung von Fe9Y-Teilchen, welche die Kontinuität der Chromoxidschicht unterbrechen. Der günstige Einfluß des Siliziums überwiegt bei den potentiell schädlichen Wirkungen des Yttriums in Legierungen, die beide Elemente enthalten.
    Notes: When present in austenitic Fe-Cr-Ni alloys, both silicon and yttrium influence scaling behaviour during oxidation tests in air at high temperatures. The former promotes the formation and maintenance of a continuous Cr2O3 scale and the latter improves scale adhesion. During the isothermal exposure of nominally Fe + 24%Cr + 24%Ni east alloys at 1000°C a silicon content above 0.8% reduces the rate of scaling by providing additional sites for the lateral growth of the Cr2 O3 layer. Yttrium gives rise to the formation of Fe9Y particles which disrupt the continuity of the Cr2O3 scale. The beneficial influence of silicon dominates the potentially detrimental effect of yttrium in alloys containing both silicon and yttrium.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19830340904
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The influence of silicon and yttrium on the scaling behaviour of an Austenitic Fe-Cr-Ni alloy under athermal conditions (1984)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 35 (1984), S. 266-272 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Einfluß von Silicium und Yttrium auf die Verzunderung austenitischer FeCrNi-Legierungen bei thermischer WechselbeanspruchungMit Hilfe von thermogravimetrisch und aufgrund der Resonanzfrequenz erhaltenen Ergebnissen sowie der Gefügeanalyse wird der Einfluß von Silicium- und/oder Yttrium-Zusätzen zu Fe 24 Cr 24 Ni auf das Oxidationsverhalten bei thermischer Wechselbeanspruchung untersucht. Silicium begünstigt danach die Bildung eines schützenden Chromoxidzunders, jedoch kann die Ansammlung einer mechanisch schwachen, siliciumreichen Oxidschicht an der Zunder/Metall-Grenzfläche zum Abplatzen des Zunders führen. Yttrium allein beeinflußt das Oxidationsverhalten nur geringfügig; zusammen mit Silicium verhindert es jedoch die Bildung der genannten siliciumreichen Zwischenoxidschicht. Die Temperaturänderung, die erforderlich ist, um den Zunder zum Abplatzen zu bringen und die schützende Wirkung aufzuheben, dient als Maß für die mechanische Integrität der entstandenen Zunderschicht. Die Fähigkeit von Legierungen, auch bei häufigem Temperaturwechsel rasch schützende Zunderschichten zu bilden und Schäden der Zunderschicht im Laufe längerer isothermischer Behandlung zum Ausheilen zu bringen, werden getrennt untersucht.
    Notes: Data obtained using thermogravimetric and resonant frequency techniques and the results of structural analysis are used to evaluate the effects on oxidation of silicon and/or yttrium additions to an Fe-24% Cr-24% Ni alloy tested under thermal cycling conditions. Silicon promotes the formation of a protective chromia scale, but the accumulation of a mechanically weak, silicon-rich oxide at the scale-metal interface eventually leads to scale spalling. Yttrium alone is found to have little influence on the rate of alloy degradation, but in alloys containing silicon its presence prevents the accumulation of the interfacial silicon-rich oxide layer. The temperature change required to cause scale failure and loss of protection to the substrate material is used as a measure of the mechanical integrity of the scales formed. The ability of alloys to form scales rapidly under conditions of frequent thermal cycling and to repair damage caused to a scale grown over a prolonged period of isothermal exposure are separately examined.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19840350604
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...