Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Rainer Sievert"'
Publikováno v:
Computational Materials Science. 50:1250-1255
During hot extrusion of copper alloys, extrusion tools have to withstand cyclic thermal and mechanical loads. To enhance the service life of the tools, materials with high temperature strength are designed as well as an optimised process control is p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cd4dd1ad3e3c6b2a3a1e061fe1c2052
https://doi.org/10.1016/j.commatsci.2010.04.022
https://doi.org/10.1016/j.commatsci.2010.04.022
Autor:
Mechthild Schrooten, Rainer Sievert
Publikováno v:
Vierteljahrshefte zur Wirtschaftsforschung. 79:9-25
In Germany banks play a major role in finance. In tranquil times the German banking sector was known as stable but low performing in terms of return on equity. Nevertheless, since years huge problems of the state-owned "Landesbanken" have been known.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b208b496109c8eb5b02b0e3861502c63
https://doi.org/10.3790/vjh.79.4.9
https://doi.org/10.3790/vjh.79.4.9
Autor:
D. Peter, Hellmuth Klingelhöffer, Stephen-Peter Brookes, Birgit Skrotzki, Janine Pfetzing, Rainer Sievert, Gunther Eggeler, Hans-Joachim Kühn
Publikováno v:
Materials Science and Engineering: A. 527:3829-3839
The uniaxial, torsional and axial–torsional thermomechanical fatigue (TMF) behavior of the near-γ TiAl-alloy TNB-V5 was investigated. TMF tests were performed at 400–800 °C with mechanical strain amplitudes ranging from 0.15% to 0.7%. The tests
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d419494ebbb0b41882d95da04eb844a
https://doi.org/10.1016/j.msea.2010.03.073
https://doi.org/10.1016/j.msea.2010.03.073
Autor:
Hans Joachim Kühn, Rainer Sievert, Stephen Peter Brookes, Janine Pfetzing, Birgit Skrotzki, D. Peter, Gunther Eggeler, Hellmuth Klingelhöffer
Publikováno v:
Advanced Materials Research. 59:283-287
A material family to replace the current superalloys in aeronautical gas turbine engines is considered to be that of gamma Titanium Aluminide (-TiAl) alloys. Structural components in aeronautical gas turbine engines typically experience large vari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cfd0f4757a9dc16e33c0297dd8946e8
https://doi.org/10.4028/www.scientific.net/amr.59.283
https://doi.org/10.4028/www.scientific.net/amr.59.283
Publikováno v:
Computational Materials Science. 43:82-91
During aluminium extrusion, the die experience cyclic thermo-mechanical loads that can lead to materials degradation and failure. For a process optimization and a comparison of different hot work tool steels, the finite element method is an appropria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b32d28daa0e3fdc8c66124906642fdd
https://doi.org/10.1016/j.commatsci.2007.07.054
https://doi.org/10.1016/j.commatsci.2007.07.054
Publikováno v:
Computational Materials Science. 39:55-64
During hot extrusion of aluminium alloys, extrusion dies experience cyclic temperature changes as well as multiaxial loadings. To improve the service life of the dies, cleaner and high hot strength materials are designed as well as an optimised proce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::273fa20f988c0649012e2ff97ee833c7
https://doi.org/10.1016/j.commatsci.2006.03.024
https://doi.org/10.1016/j.commatsci.2006.03.024
Publikováno v:
International Journal of Fatigue. 28:1791-1802
This work deals with the formulation of a three-dimensional crystallographic time-incremental lifetime rule for face-centered cubic (fcc) single crystals used for gas-turbine blade applications. The damage contribution rate of each slip system to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b6677c1da6eb420573ae37769dadf1f
https://doi.org/10.1016/j.ijfatigue.2005.12.006
https://doi.org/10.1016/j.ijfatigue.2005.12.006
Publikováno v:
Journal de Physique IV (Proceedings). 134:299-304
Smooth and round notched tensile specimens with three different notch radii as well as single-edge bending specimens were tested in two high strain-rate testing machines at various strain-rates and temperatures. The experimental data were used to ide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b563dd5916334d5028e82c7e5df0cbed
https://doi.org/10.1051/jp4:2006134046
https://doi.org/10.1051/jp4:2006134046
Publikováno v:
International Journal of Fracture. 136:207-220
Laird and Smith [(1962). Philosophical Magazine 8, 847–857] proposed a plastic sliding-off mechanism for the stage II fatigue crack growth via striation formation. In their view, the fatigue crack extension results solely from the changing characte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa2a20a4ddd7c545e08e14754d9d811f
https://doi.org/10.1007/s10704-005-6024-y
https://doi.org/10.1007/s10704-005-6024-y
Publikováno v:
Computational Materials Science. 32:426-434
In this work, the influence of the development of geometrically necessary dislocations (GNDs) at a crack tip in single crystals on the hardening and crack propagation behaviour is investigated. In particular, we are interested in examining the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd7d8df5e2a548d1d3a9921bec074769
https://doi.org/10.1016/j.commatsci.2004.09.023
https://doi.org/10.1016/j.commatsci.2004.09.023