Zobrazeno 1 - 10
of 473
pro vyhledávání: '"Umer Masood"'
Autor:
Umer Masood Chaudry, Seung-Chang Han, Kaab bin Tayyab, Ameeq Farooq, Woo-Sung Kim, Tea-Sung Jun
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 1188-1200 (2024)
In this study, cubic Hastelloy-X was manufactured by laser powder bed fusion process. A systematic investigation focused on the microstructure and anisotropic electrochemical corrosion behavior along the building direction was conducted. Distinctive
Externí odkaz:
https://doaj.org/article/e1842be8b9e844dfa538864c9b21b647
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 335-348 (2024)
This study investigates the influence of extrusion and deformation temperatures on the mechanical properties of the AZ61 Mg alloy. Increasing the extrusion temperature from 300 to 400 °C led to larger grain size and higher basal texture intensity. A
Externí odkaz:
https://doaj.org/article/7882a8a59abc4a61ad01db563d3d14be
Autor:
Umer Masood Chaudry, Hafiz Muhammad Rehan Tariq, Nooruddin Ansari, Soo Yeol Lee, Tea-Sung Jun
Publikováno v:
Journal of Magnesium and Alloys, Vol 12, Iss 5, Pp 1996-2009 (2024)
This study investigates the influence of CaO (0.5, 1 (wt.%)) alloying on the microstructural evolution, texture development and deformation behavior of AZ61 magnesium alloy. The uniaxial tension tests at room (RT) and cryogenic (CT, -150 °C) tempera
Externí odkaz:
https://doaj.org/article/799c292c986f41729378dc2f2fece311
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 3249-3254 (2024)
In the pursuit of enhancing the mechanical properties of magnesium alloys, particularly AZX211, which is renowned for its lightweight characteristics but plagued by low ductility and strength, this study explores the effects of cryogenic pre-stretchi
Externí odkaz:
https://doaj.org/article/d52771e1b626410a97217a477e475cfe
Autor:
Umer Masood Chaudry, Hafiz Muhammad Rehan Tariq, Muhammad Zubair, Nooruddin Ansari, Tea-Sung Jun
Publikováno v:
Journal of Magnesium and Alloys, Vol 11, Iss 11, Pp 4146-4165 (2023)
Deformation twinning is profusely activated in the Mg alloys due to lower critical resolved shear stress (CRSS) compared to the non-basal slip systems (prismatic and pyramidal ) and plays a significant role in texture reorientation, grain refinement
Externí odkaz:
https://doaj.org/article/e2a2a0693a5b4f1d9a7aac8983425a81
Autor:
Yasir Zulfiqar, Asim Zulfiqar, Hafiz Waqar Ahmad, Umer Masood Chaudry, Muhammad Kashif Khan, Tea-Sung Jun
Publikováno v:
Applied Mechanics, Vol 4, Iss 3, Pp 990-1014 (2023)
The seismic analysis of ground-supported cylindrical steel tanks subjected to lateral harmonic displacement loadings has been carried out. This paper numerically evaluates the structural response of various tank geometries due to resonant seismic slo
Externí odkaz:
https://doaj.org/article/aea99c25263046e9b5b9b3778d0d6265
Publikováno v:
Journal of Materials Research and Technology, Vol 23, Iss , Pp 4976-4989 (2023)
In this study, microstructural and texture development in the individual weld zone during friction stir welding (FSW) of DP780 steel at similar tool rotation speed (200 rpm) different welding speeds (200 mm/min and 400 mm/min) was investigated. Phase
Externí odkaz:
https://doaj.org/article/18c78d7dd147447ca22c9864dfddb146
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 508-515 (2022)
In this study, the effect of variable transverse speed (200 mm/min and 400 mm/min) on the microstructure and mechanical properties of FSWed DP 780 steel was systematically investigated. A detailed microstructural characterization was conducted using
Externí odkaz:
https://doaj.org/article/c64ed267b29c4324b5e4ecde5786f990
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 3344-3354 (2022)
Strength ductility tradeoff, strain hardenability and in-plane isotropy under tensile loading are big dilemmas in magnesium alloys. In this study, we have fabricated an extruded low alloyed Mg-0.5Zn-0.5Y-0.15Si alloy. Based on bimodal grain size, str
Externí odkaz:
https://doaj.org/article/9fc095fe58a146c08475ac6c2150900a
Publikováno v:
Journal of Materials Research and Technology, Vol 19, Iss , Pp 3406-3420 (2022)
The microstructural evolution and slip activity in a pure Mg and AZX211 alloy during room and cryogenic temperatures (CT: −50 °C, −100 °C and −150 °C) deformation has been systematically investigated. The influence of alloying and deformatio
Externí odkaz:
https://doaj.org/article/dcbdd50422d24bd39446abc85ba7b30e