Results 11 to 20 of about 111 (109)

The Tapering Length of Needles in Martensite/Martensite Macrotwins

Archive for Rational Mechanics and Analysis, 2023
AbstractWe study needle formation at martensite/martensite macro interfaces in shape-memory alloys. We characterize the scaling of the energy in terms of the needle tapering length and the transformation strain, both in geometrically linear and in finite elasticity.
Sergio Conti, Barbara Zwicknagl
openaire   +2 more sources

Martensitic transformation in zirconiaPart II. Martensite growth [PDF]

Acta Materialia, 2004
23 pages, 11 ...
Deville, Sylvain, Guénin, Gérard, Chevalier, Jérome   +2 more
openaire   +2 more sources

Building Hierarchical Martensite [PDF]

Advanced Functional Materials, 2020
AbstractMartensitic materials show a complex, hierarchical microstructure containing structural domains separated by various types of twin boundaries. Several concepts exist to describe this microstructure on each length scale, however, there is no comprehensive approach bridging the whole range from the nano‐ up to the macroscopic scale.
Stefan Schwabe, Robert Niemann, Anja Backen, Daniel Wolf, Christine Damm, Tina Walter, Hanuš Seiner, Oleg Heczko, Kornelius Nielsch, Sebastian Fähler   +9 more
openaire   +3 more sources

Funktionalisierung faserverstärkter Hochleistungsbetone mittels Formgedächtnislegierungen

ce/papers, Volume 6, Issue 6, Page 888-895, December 2023., 2023
Abstract Faserverstärkte (Ultra‐)Hochleistungsbetone ((U)HPC) werden bereits seit den 1970er Jahren in großen Mengen für die Herstellung von Betonfertigteilen verwendet. Fasern werden eingesetzt, um die Zugfestigkeit zu erhöhen und sprödes Versagen in duktiles Nachbruchverhalten umzuwandeln.
Bernhard Middendorf, Maximilian Schleiting, Ekkehard Fehling   +2 more
wiley   +1 more source

Material matters: predicting the core hardness variance in industrialized case hardening of 18CrNi8 Vorhersage der Kernhärtenvarianz von industriell einsatzgehärtetem 18CrNi8

Materialwissenschaft und Werkstofftechnik, Volume 53, Issue 5, Page 576-589, May 2022., 2022
Data sources, including steel melt composition, meta and sensor process data, as well as measurement errors are used to explain the variance in core hardness of 18CrNi8 nozzle bodies after industrial heat treatment. Traditional physical models are compared with data‐driven machine learning models in order to predict deviation of core hardness from the ...
Y. Lingelbach, T. Waldenmaier, L. Hagymasi, R. Mikut, V. Schulze   +4 more
wiley   +1 more source

Material and residual stress improvement in S355 welded structural steel using mechanical and thermal post‐weld treatment methods

Steel Construction, Volume 15, Issue 1, Page 51-54, February 2022., 2022
Abstract Welding is by far the most widely used metal joining method. High‐Frequency Mechanical Impact (HFMI) treatment and Tungsten Inert Gas (TIG) remelting are two post‐weld treatment methods that aim to enhance the strength of the steel. In this paper, the improvement in residual stress and material characteristic obtained with these methods are ...
Hassan Al‐Karawi
wiley   +1 more source

Integrated laser based pre‐tempering at laser welding of AISI 1045 steel by using 3D‐scanner optics Integrierte laserbasierte Vorwärmung beim Laserstrahlschweißen von AISI 1045 Stahl mittels 3D‐Scanner‐Optik

Materialwissenschaft und Werkstofftechnik, Volume 52, Issue 11, Page 1139-1160, November 2021., 2021
Laser beam welding of heat‐treatable steel is challenging due to martensitic hardening. Before welding local laser pre‐tempering of the welding zone with an oscillating defocused laser beam is investigated. Therefore the beam was guided over the surface using a 3D scanner optics. Thus the cooling rates and the resulting martensitic structure within the
F. Steidle, M. Hofele, G. Ketzer‐Raichle, M. Gooßen, H. Riegel   +4 more
wiley   +1 more source

Investigations on the thermal stability of microstructures generated by different thermal electron beam surface treatments Untersuchungen zur thermischen Stabilität von Gefügen verschiedener thermischer Elektronenstrahl‐Randschichtbehandlungen

Materialwissenschaft und Werkstofftechnik, Volume 52, Issue 6, Page 603-616, June 2021., 2021
Electron beam surface treatments are excellently suited to increase the surface hardness of cast iron by a factor of 2–4, which provide a good basis for improved support of thinner layers, as produced during coating, nitriding or boriding. The variants of the combination treatments possible depend on the thermal resistance of the unbalanced ...
A. Buchwalder, J. Thronicke, A. Holst, P. Hollmann, P. Hengst, R. Zenker   +5 more
wiley   +1 more source

Adaptive Modulations of Martensites [PDF]

Physical Review Letters, 2010
4 pages manuscript, 8 pages ...
Kaufmann, S., Roessler, U. K., Heczko, O., Wuttig, M., Buschbeck, J., Schultz, L., Fahler, S.   +6 more
openaire   +3 more sources

The Features of Martensitic Transformation in 12% Chromium Ferritic–Martensitic Steels [PDF]

Materials, 2021
An anomaly in martensitic transformation (the effect of martensitic two-peak splitting in the temperature-dependent thermal expansion coefficient) in complex alloyed 12% chromium steels Fe-12%Cr-Ni-Mo-W-Nb-V-B (ChS-139), Fe-12%Cr-Mo-W-Si-Nb-V (EP-823) and Fe-12%Cr-2%W-V-Ta-B (EK-181) was investigated in this study.
Bazaleeva K., Golubnichiy A., Chernov A., Ni A., Mendagaliyev R.   +4 more
openaire   +3 more sources