Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Johannes Kreyca"'
Autor:
Evelyn Sobotka, Johannes Kreyca, Robert Kahlenberg, Aurélie Jacob, Ernst Kozeschnik, Erwin Povoden-Karadeniz
Publikováno v:
Metals, Vol 13, Iss 5, p 884 (2023)
Recrystallization kinetics and two critical temperatures—the non-recrystallization temperature TNR and the static recrystallization critical temperature TSRCT—of five Nb, Ti, and V microalloyed steel grades are evaluated. The experimental examina
Externí odkaz:
https://doaj.org/article/05512f2e9865489f808708878519cfd2
The Role of MX Carbonitrides for the Particle-Stimulated Nucleation of Ferrite in Microalloyed Steel
Autor:
Evelyn Sobotka, Johannes Kreyca, Nora Fuchs, Tomasz Wojcik, Ernst Kozeschnik, Erwin Povoden-Karadeniz
Publikováno v:
Metallurgical and Materials Transactions A.
The role of titanium and vanadium carbonitrides (Ti,V)(C,N) of the MX series on the austenite-to-ferrite transformation in microalloyed steels and their potential of acting as pre-nuclei for intragranular ferrite nucleation is examined experimentally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b907b5dc13522051bd7378570c64744c
https://doi.org/10.1007/s11661-023-07067-z
https://doi.org/10.1007/s11661-023-07067-z
Publikováno v:
Materials; Volume 15; Issue 19; Pages: 6824
Microalloyed steels offer a good combination of desirable mechanical properties by fine-tuning grain growth and recrystallization dynamics while keeping the carbon content low for good weldability. In this work, the dislocation density evolution duri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e867069bd4d8f4f9bfc12be9270120e
Autor:
Johannes Kreyca, Ernst Kozeschnik
Publikováno v:
International Journal of Plasticity. 103:67-80
A novel and comprehensive approach addressing the stress strain response of binary Al-Mg alloys under uniaxial loading over a wide range of temperatures (78 K–650 K), strain rates (10−4–10 s−1) and solute contents (0 wt.%–5 wt.%) is develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7744adc10fd6c443ae4ad1407c3018c
https://doi.org/10.1016/j.ijplas.2018.01.001
https://doi.org/10.1016/j.ijplas.2018.01.001
Autor:
Ernst Kozeschnik, Johannes Kreyca
Publikováno v:
Materials Science and Engineering: A. 708:411-418
The effect of β ′′ precipitation on strain hardening and yield stress evolution in an A6061 aluminium alloy is studied experimentally and through thermokinetic computer simulation. Samples were deformed by compression at temperatures from 25 to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e58c7e2450fbdca03196b893be0d7497
https://doi.org/10.1016/j.msea.2017.10.027
https://doi.org/10.1016/j.msea.2017.10.027
Autor:
Johannes Kreyca, Ernst Kozeschnik
Publikováno v:
Metallurgical and Materials Transactions A. 49:18-21
A classical constitutive modeling-based Ansatz for the impact of thermal activation on the stress–strain response of metallic materials is compared with the state parameter-based Kocks–Mecking model. The predicted functional dependencies suggest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa5052d9223869303d724e1ae846e77b
https://doi.org/10.1007/s11661-017-4402-5
https://doi.org/10.1007/s11661-017-4402-5
Autor:
Johannes Kreyca, Ernst Kozeschnik
Publikováno v:
Materials Science Forum. 892:44-49
A constant strain hardening rate is characteristic for large strain deformation at low temperatures and often observed during wire drawing. This stage of deformation, in the following referred to as stage IV, is determined by the microstructural evol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97ce1ee5671115227716349ff3d21f52
https://doi.org/10.4028/www.scientific.net/msf.892.44
https://doi.org/10.4028/www.scientific.net/msf.892.44
Autor:
Johannes Kreyca, Ernst Kozeschnik
Publikováno v:
Procedia Engineering. 207:37-41
The temperature limit for the technological usage of an A6061 aluminium alloy is investigated taking into account the initial precipitation state and the stability of hardening phases during the deformation process. In a critical temperature range, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0262bdaac44efb0fc8575aa1f52abeb
https://doi.org/10.1016/j.proeng.2017.10.734
https://doi.org/10.1016/j.proeng.2017.10.734
Publikováno v:
Materials Science Forum. 879:1014-1018
The yield strength of an A6061 Aluminium alloy for different artificial ageing times, strain rates and temperatures is modelled taking into account precipitation, solid solution and dislocation forest strengthening. Precipitation kinetics during arti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::586dec28e0b2f008ad8c4ed1fa262088
https://doi.org/10.4028/www.scientific.net/msf.879.1014
https://doi.org/10.4028/www.scientific.net/msf.879.1014