Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Waldemar Ziaja"'
Publikováno v:
Metals, Vol 14, Iss 6, p 619 (2024)
This study employs the finite element (FE) method to analyze the Incremental Sheet Forming (ISF) process of Ti-6Al-4V titanium alloy. The numerical modeling of pressure-assisted warm forming of Ti-6Al-4V sheets with combined oil-heating and friction
Externí odkaz:
https://doaj.org/article/e6550342ebff4f7b90ad75153903ea4f
Autor:
Dariusz Szeliga, Maciej Motyka, Waldemar Ziaja, Rafał Cygan, Sylwester Fuglewicz, Magdalena Gromada
Publikováno v:
JOM. 75:2034-2044
The solidification process of IN713C Ni-based superalloy rod castings made by the investment casting method without and with the use of novel insulating module applied on the ceramic mold was studied in this article. The design of the cone-shaped ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8c2b2988607629d9f28d8dced1783cc
https://doi.org/10.1007/s11837-023-05733-6
https://doi.org/10.1007/s11837-023-05733-6
Autor:
Waldemar Ziaja, Andrzej Kawalec
Publikováno v:
JOM. 74:3745-3751
Fatigue life of titanium and titanium alloys is frequently reduced if the load holds at the maximum stress are introduced, which is termed dwell debit. Many factors affect dwell fatigue of titanium alloys, like stress state, level and ratio, alloy ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b118ca545b6e30ab0cb927cae7e7dd56
https://doi.org/10.1007/s11837-022-05461-3
https://doi.org/10.1007/s11837-022-05461-3
Publikováno v:
Journal of Manufacturing Processes. 49:153-161
The macro- and microstructure of nickel superalloys castings, especially thin-walled ones, have a large influence on their mechanical properties. Better understanding of the macro- and microstructure response to casting conditions will enable the opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d9d8ef1e89a1bf4860f721e117f84f3
https://doi.org/10.1016/j.jmapro.2019.11.028
https://doi.org/10.1016/j.jmapro.2019.11.028
Publikováno v:
MATEC Web of Conferences, Vol 321, p 12034 (2020)
Microstructure and mechanical properties of heat treated martensitic two-phase α+β titanium alloys are in major perspective determined by results of martensite decomposition during tempering. The process of martensitic α’(α”) phase decomposit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c0432e539fac6ab66f702bcc522cfc4
https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_12034.pdf
https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_12034.pdf
Publikováno v:
MATEC Web of Conferences, Vol 321, p 11079 (2020)
One of the important criteria for selection titanium alloys for discs and blades of turbine engine compressor is their fatigue and creep strength at room and elevated temperature. Fatigue and creep properties of two-phase titanium alloys show strong
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d4ab98ce188a9ed7bf81870b6def21c
https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11079.pdf
https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11079.pdf
Publikováno v:
International Journal of Materials Research. 109:685-693
Development of mechanical properties of titanium alloys is usually achieved by the control of their microstructure (globular, lamellar, bimodal). Dynamic fragmentation and spheroidization of elongated α phase grains, formed from martensite laths, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aae525f7c82a76ab9d6d4f8b0d08d8e9
https://doi.org/10.3139/146.111660
https://doi.org/10.3139/146.111660
Autor:
Dariusz Szeliga, J. Sz. Suchy, Andriy A. Burbelko, Rafał Cygan, Wojciech J. Nowak, Waldemar Ziaja, Krzysztof Kubiak, Jan Sieniawski
Publikováno v:
Experimental Thermal and Fluid Science. 87:149-160
The study of thermal resistance (TR) at the casting-mold interface has been performed to describe the solidification process aimed at the improvement of technology and the reduction of defect quantity of investment castings. The analysis of thermal r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c393cba8da88e85e4bcf01f4dc765c2c
https://doi.org/10.1016/j.expthermflusci.2017.04.024
https://doi.org/10.1016/j.expthermflusci.2017.04.024
Autor:
Aneta Hanc-Kuczkowska, Waldemar Ziaja, Kamil Gancarczyk, Dariusz Szeliga, Barbara Kościelniak, Maciej Motyka, Jan Sieniawski, Robert Albrecht, Maciej Zubko
Publikováno v:
Materials
Materials, Vol 12, Iss 20, p 3422 (2019)
Volume 12
Issue 20
Materials, Vol 12, Iss 20, p 3422 (2019)
Volume 12
Issue 20
This study focuses on the evaluation of the crystal structure perfection in the single crystal made of CMSX-4 nickel superalloy and its effect on creep resistance. Single crystal castings were manufactured by directional solidification process at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1273673677e715659483066220dade85
http://europepmc.org/articles/PMC6830086
http://europepmc.org/articles/PMC6830086
Publikováno v:
Materials
Volume 12
Issue 6
Materials, Vol 12, Iss 6, p 935 (2019)
Volume 12
Issue 6
Materials, Vol 12, Iss 6, p 935 (2019)
The technique of flattening the temperature profile and controlling the formation of both the dendritic microstructure and grain structure in the directional solidification of nickel-based superalloy casting, using the novel inner radiation baffles (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33303fc00e13665044b9d54e19ba915c
http://europepmc.org/articles/PMC6471335
http://europepmc.org/articles/PMC6471335