Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Akbar Heidarzadeh"'
Autor:
Fatemeh Kaffash Charandabi, Hamid Reza Jafarian, Seyed Hossein Seyedein, Mohammad Faseeulla Khan, Ali Reza Eivani, Akbar Heidarzadeh
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 1218-1230 (2024)
The warm compression tests were carried out at various temperatures of 400, 550, and 700 °C and strain rates of 0.01, 0.001, and 0.0001 s−1 to unravel the warm deformation behavior of CoCrCuFeNi high entropy alloy (HEA). The microstructural evolut
Externí odkaz:
https://doaj.org/article/0bfd3b6218de42acb0fcb89d35d7e253
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 2043-2049 (2023)
The present study investigates the microstructure and mechanical properties of the Co-free FeNiMnCrAlTi high-entropy alloy (HEA) after casting, homogenizing heat treatment, and hot rolling. The results show that the dendrite regions in the as-cast st
Externí odkaz:
https://doaj.org/article/4c4dbcec1d6a4cb986505130c5f7df09
Publikováno v:
Journal of Materials Research and Technology, Vol 24, Iss , Pp 5139-5146 (2023)
Friction stir processing (FSP), an innovative local microstructural modification technique for bulk material, has been used to process Monel alloy. A detailed microstructural analysis was conducted by acquiring high-resolution electron backscatter di
Externí odkaz:
https://doaj.org/article/6181397895ea4f199dee344315aed477
Autor:
Akbar Heidarzadeh, Rasoul Khajeh, Reza Jabraeili, Hamid Reza Jafarian, Mohamed Ahmed, Nokeun Park, Unhae Lee
Publikováno v:
Journal of Materials Research and Technology, Vol 24, Iss , Pp 1897-1909 (2023)
The main problem in post-treatment of laser powder bed fusion (L-PBF) AlSi10Mg is the sharp reduction in strength when the ductility enhances, i.e. the problem of strength-ductility trade-off. Friction stir welding (FSW) at a low rotational speed of
Externí odkaz:
https://doaj.org/article/9b8e3b11c6cc4b02a38f6239281bb967
Autor:
Rasoul Khajeh, Hamid Reza Jafarian, Reza Jabraeili, Ali Reza Eivani, Seyed Hossein Seyedein, Nokeun Park, Akbar Heidarzadeh
Publikováno v:
Journal of Materials Research and Technology, Vol 16, Iss , Pp 251-262 (2022)
This study aims to justify an appropriate condition for enhancement of strength and ductility trade off in dissimilar friction stir welded joints of AA2024/copper having Zn interlayer with various thicknesses. For this aim, friction stir welding (FSW
Externí odkaz:
https://doaj.org/article/bcb070e786424c918ae92bd33bb62024
Autor:
Akbar Heidarzadeh, Roghayeh Mohammadzadeh, Hamid Reza Jafarian, Catalin Iulian Pruncu, Aude Simar
Publikováno v:
Journal of Materials Research and Technology, Vol 16, Iss , Pp 194-200 (2022)
The contribution of geometrically necessary dislocations (GNDs) and grain boundaries (GBs) on the mechanical properties of different zones in a friction stir welded pure copper joint is unveiled. This representative and simple medium stacking fault m
Externí odkaz:
https://doaj.org/article/90134e677d21474ca82baf813693d5c8
Autor:
Rasoul Khajeh, Hamid Reza Jafarian, Seyed Hossein Seyedein, Reza Jabraeili, Ali Reza Eivani, Nokeun Park, Yejin Kim, Akbar Heidarzadeh
Publikováno v:
Journal of Materials Research and Technology, Vol 14, Iss , Pp 1945-1957 (2021)
The effect of friction stir welding (FSW) parameters on the microstructure, mechanical and electrical properties of 2024 aluminum alloy and copper joints was investigated. After obtaining the processing window, the optimum values of ultimate tensile
Externí odkaz:
https://doaj.org/article/410ad1b81d144752ada72f084975a43b
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 15072-15086 (2020)
The Al6061/ZrO2 composites were produced using a low-cost stir casting technique, for the first time. The microstructures, mechanical properties, and electrochemical behavior of the composites, containing different amounts of ZrO2 ceramic reinforceme
Externí odkaz:
https://doaj.org/article/084068657dda4c3494f74ef9bcd2f053
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 15874-15879 (2020)
For the first time, the origin of tool composition effect on microstructure and mechanical properties of the friction stir welded joints has been disclosed. For this aim, nanoindentation, orientation image microscopy, and transmission electron micros
Externí odkaz:
https://doaj.org/article/f90d1dfe257047119b6df7fcffba471e
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 5, Pp 11154-11161 (2020)
The microstructure and tensile behavior of stir zones in the friction stir welded brass plates containing disordered secondary β phase at different heat inputs were investigated. At high heat inputs, β was transformed completely to α, and hence th
Externí odkaz:
https://doaj.org/article/b9db709691a14acd95a521257e49b24f