Results 51 to 60 of about 406 (114)

Study on the plasticity improvement mechanism and grain refinement of AZ80 Mg alloy under cryogenic multi-directional forging

Journal of Materials Research and Technology
The introduction of twin lamellae and dislocation interaction through Multi-directional forging (MDF) at room temperature (RT) has been reported to significantly improve the mechanical properties of Mg alloys.
Shuchang Li, Zhuo Wang, Xi Zhao, Xiangdong Wang, Jianmin Yu   +4 more
doaj   +1 more source

Development of High Strength and Corrosion Resistant Magnesium Alloys Using Severe Plastic Deformation Process [PDF]

, 2018
학위논문 (박사)-- 서울대학교 대학원 : 공과대학 재료공학부, 2018. 2. Kwang Seon Shin.In the present work, several Mg alloys as well as pure Mg were produced through different processes including casting, extrusion, screw rolling (SR) and multi directional forging (MDF).
Ahmad Bahmani
core  

Effects of multi-directional forging process on coarse crystalline phases and mechanical properties of 2195 Al–Cu–Li alloy

Journal of Materials Research and Technology
The 2195 Al–Cu–Li alloy, extensively used in aerospace applications such as rocket tank transition rings, suffers from coarse crystalline phases formed during casting.
Hailin He, Huiyu Chen, Mianzhi Tang, Youping Yi, Wenxue Zhang, Shiquan Huang, Fei Dong   +6 more
doaj   +1 more source

Strengthening mechanism based on dislocation-twin interaction under room temperature multi-directional forging of AZ80 Mg alloy

Journal of Materials Research and Technology
Twin and dislocation have critical influence on the mechanical properties of the widely used AZ80 magnesium alloy. In the present work, we designed room temperature multi-direction forging (MDF) at different strain amplitudes (3% and 6%) with a same ...
Zhuo Wang, Xi Zhao, Shuchang Li, Jianmin Yu   +3 more
doaj   +1 more source

Obtención de materiales metálicos de tamaño de grano ultrafino [PDF]

, 2008
Con este trabajo se busca proporcionar una visión general de los procesos de Severa Deformación Plástica (SPD del acrónimo en inglés). Este proceso es considerado uno de los más importantes para obtener cantidades industriales de materiales metálicos con
Cabrera, Jose Maria, R. Rodriguez, Baracaldo   +1 more
core   +3 more sources

Microstructural evolution and mechanical behavior of pearlitic steel under multi-directional forging

Journal of Materials Research and Technology
The mechanical behavior and the microstructural evolution of a pearlitic SAE 1080 steel were analyzed along 12 Multi-Directional Forging (MDF) cycles at room temperature and strain amplitude Δε ≈ 0.30 (MDF0.30). The resulting cumulative strain flow curve
Nayara Aparecida Neres da Silva, Paula Cibely Alves Flausino, Taise Matte Manhabosco, Maria Teresa Paulino Aguilar, Paulo Roberto Cetlin   +4 more
doaj   +1 more source

Microstructure and properties of fine grained Cu-Cr-Zr alloys after termo-mechanical treatments [PDF]

, 2018
Cu-Cr-Zr alloys provide an excellent combination of strength and electric conductivity and are frequently used as engineering materials in various electric/electronic devises.
Belyakov, A., Kaibyshev, R., Mishnev, R., Morozova, A.   +3 more
core  

Effect of deformation on precipitation and the microstructure evolution during multistep thermomechanical processing of Al-Zn-Mg-Cu Alloy [PDF]

, 2020
Copyright © 2020 by the authors. In order to obtain fine grained structure e°ciently, a new multi-step rolling process (MSR: pre-deformation + intermediate annealing + hot deformation) was applied in Al-Zn-Mg-Cu plates.
Hou, L, Peng, W, Shu, X, Yin, A, Zhang, J, Zuo, J   +5 more
core   +1 more source

Encruamento e evolução microestrutural do alumínio submetido à compressão multiaxial (MAC) após ECAP [PDF]

, 2019
The growing need for materials with multifunctional properties has motivated the development of new alloys and processing techniques. Among these materials, the high strength ones obtained via SPD (Severe Plastic Deformation) stand out.
Cleber Granato de Faria
core  

Multi-scale interactions governing dynamic recrystallization: Coupled fragmentation of coarse T/η phases, DIP-induced MgZn2, and Al3(Sc,Zr) dispersoids in a high-alloy Al–Zn–Mg–Cu–Zr–Sc alloy

Journal of Materials Research and Technology
Understanding how multi-scale second phases interact during thermomechanical processing is essential for controlling dynamic recrystallization (DRX) in highly alloyed 7xxx aluminum systems.
Junhua Cheng, Hongbang Shao, Jinchuan Wen, Yu Liu, Yuhui Wang, Yuanchun Huang   +5 more
doaj   +1 more source