TY - JOUR AU - Al-Hafadhi, Mahmood Hasan AU - Krállics, György TI - Prediction and numerical simulation of residual stress in multi-pass pipe welds JF - POLLACK PERIODICA: AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES J2 - POLLACK PERIODICA VL - 16 PY - 2021 IS - 2 SP - 7 EP - 12 PG - 6 SN - 1788-1994 DO - 10.1556/606.2020.00127 UR - https://m2.mtmt.hu/api/publication/32590258 ID - 32590258 LA - English DB - MTMT ER - TY - JOUR AU - Révész, Ádám AU - Fodor, Dániel G. AU - Krállics, György AU - Spassov, Tony AU - Gajdics, Marcell TI - Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives JF - REVIEWS ON ADVANCED MATERIALS SCIENCE J2 - REV ADV MATER SCI VL - 60 PY - 2021 IS - 1 SP - 884 EP - 893 PG - 10 SN - 1606-5131 DO - 10.1515/rams-2021-0056 UR - https://m2.mtmt.hu/api/publication/32542465 ID - 32542465 N1 - Department of Materials Physics, Eötvös University, P.O.B. 32, Budapest, H-1518, Hungary Department of Materials Science and Engineering, Budapest University of Technology and Economics, Bertalan L. Str. 7, Budapest, H-1111, Hungary Department of Chemistry, University of Sofia St.Kl.Ohridski, Sofia, 1164, Bulgaria Cited By :2 Export Date: 15 January 2024 Correspondence Address: Révész, Á.; Department of Materials Physics, P.O.B. 32, Hungary; email: reveszadam@ludens.elte.hu AB - Ball-milled nanocrystalline Mg powders catalyzed by TiO2 powder, titanate nanotubes and carbon nanotubes were subjected to intense plastic deformation by equal-channel angular pressing. Microstructural characteristics of these nanocomposites have been investigated by X-ray diffraction. Microstructural parameters, such as the average crystallite size, the average dislocation density and the average dislocation distance have been determined by the modified Williamson–Hall analysis. Complementary hydrogen desorption and absorption experiments were carried out in a Sieverts’ type apparatus. It was found that the Mg-based composite catalyzed by titanate nanotubes exhibits the best overall H-storage performance, reaching 7.1 wt% capacity. The hydrogenation kinetic curves can be fitted by the contracting volume function for all the investigated materials. From the fitted parameters, it is confirmed that the titanate nanotube additive results in far the best kinetic behavior, including the highest hydride front velocity. LA - English DB - MTMT ER - TY - CONF AU - Renkó, József Bálint AU - Krállics, György ED - Barabás, István TI - Többtengelyű kovácsolás virtuális és fizikai szimulációinak összehasonlítása : Comparison of virtual and physical simulation of multi-axial forging processes T2 - XXIX. Nemzetközi Gépészeti Konferencia OGÉT 2021 PB - Erdélyi Magyar Műszaki Tudományos Társaság (EMT) C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 29. PY - 2021 SP - 191 EP - 195 PG - 5 UR - https://m2.mtmt.hu/api/publication/32004534 ID - 32004534 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szűcs, Máté AU - Krállics, György AU - Lenard, John G. TI - The difficulties of predicting the coefficient of friction in cold flat rolling JF - JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME J2 - J TRIBOL-T ASME VL - 143 PY - 2021 IS - 10 PG - 6 SN - 0742-4787 DO - 10.1115/1.4049621 UR - https://m2.mtmt.hu/api/publication/31816469 ID - 31816469 LA - English DB - MTMT ER - TY - JOUR AU - Renkó, József Bálint AU - Bereczki, Péter AU - Krállics, György TI - Virtual and Physical Simulation of Multi-Axial Forging Processes JF - MATERIALS SCIENCE AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC J2 - MATER SCI ENGINEERING MISKOLC VL - 45 PY - 2020 IS - 1 SP - 241 EP - 251 PG - 11 SN - 2063-6792 UR - https://m2.mtmt.hu/api/publication/31834862 ID - 31834862 LA - English DB - MTMT ER - TY - JOUR AU - Szűcs, Máté AU - Szabó, Gábor AU - Krállics, György AU - Mikó, Tamás AU - Kovács, Árpád AU - Zheng, Wenqiang TI - Hot Roll Bonding of Aluminium Alloys JF - MATERIALS SCIENCE AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC J2 - MATER SCI ENGINEERING MISKOLC VL - 45 PY - 2020 IS - 1 SP - 295 EP - 306 PG - 12 SN - 2063-6792 UR - https://m2.mtmt.hu/api/publication/31833499 ID - 31833499 LA - English DB - MTMT ER - TY - JOUR AU - Szűcs, Máté AU - Szabó, Gábor AU - Krállics, György AU - Bereczki, Péter AU - Puskás, Csaba AU - Isaq Khan, Ghulam TI - Investigation of Tribological Conditions for Cold Rolling of Aluminium JF - MATERIALS SCIENCE AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC J2 - MATER SCI ENGINEERING MISKOLC VL - 45 PY - 2020 IS - 1 SP - 284 EP - 294 PG - 11 SN - 2063-6792 UR - https://m2.mtmt.hu/api/publication/31833488 ID - 31833488 LA - English DB - MTMT ER - TY - JOUR AU - Szűcs, Máté AU - Bobor, Kristóf AU - Szabó, Gábor AU - Krállics, György AU - Kovács, Sándor TI - Comparison of Simplified and Finite Element Analysis on Cold Flat rolling JF - MATERIALS SCIENCE AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC J2 - MATER SCI ENGINEERING MISKOLC VL - 45 PY - 2020 IS - 1 SP - 271 EP - 283 PG - 13 SN - 2063-6792 UR - https://m2.mtmt.hu/api/publication/31833469 ID - 31833469 LA - English DB - MTMT ER - TY - JOUR AU - Gál, Viktor AU - Szűcs, Máté AU - Szabó, Gábor AU - Krállics, György TI - A Comparative Study of Non-Monotonicity for Unidirectional and Cross Rolling of Niobium Sheet JF - MATERIALS SCIENCE AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC J2 - MATER SCI ENGINEERING MISKOLC VL - 45 PY - 2020 IS - 1 SP - 84 EP - 95 PG - 12 SN - 2063-6792 UR - https://m2.mtmt.hu/api/publication/31811022 ID - 31811022 LA - English DB - MTMT ER - TY - JOUR AU - ALHAFADHI, Mahmood Hasan AU - Krállics, György TI - Finite Element Modelling of Residual Stresses in Welded Pipe Welds with Dissimilar Materials JF - MATERIALS SCIENCE AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC J2 - MATER SCI ENGINEERING MISKOLC VL - 45 PY - 2020 IS - 1 SP - 7 EP - 19 PG - 13 SN - 2063-6792 UR - https://m2.mtmt.hu/api/publication/31810890 ID - 31810890 LA - English DB - MTMT ER -