Results 31 to 40 of about 6,691 (300)

Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing

Metals, 2022
A commercial 2024 aluminum alloy was heat treated at 280 °C for 48 h and then slow cooled in a furnace to obtain minimum hardness. This material was then friction stir processed (FSP) using three sets of processing conditions.
Alberto Orozco-Caballero, Marta Álvarez-Leal, Fernando Carreño, Oscar A. Ruano   +3 more
doaj   +1 more source

Mechanical modeling of grain boundary sliding of polycrystals

, 1994
Using a variational method, a general three-dimensional solution to the problem of a sliding spherical inclusion embedded in an infinite anisotropic medium is presented in this paper. The inclusion itself is also a general anisotropic elastic medium. The
王自强, 潘文科
core   +1 more source

An energy approach to predict electromigration induced grain rotation under high current density

Theoretical and Applied Mechanics Letters, 2019
An energy approach is proposed to describe the electromigration induced grain rotation under high current density. The driving force is assumed to arise from the grain-boundary energy reduction and increase of the inner energy from the joule heating ...
Yuexing Wang, Yao Yao
doaj   +1 more source

Effect of C on the superplasticity of medium Mn steel

Journal of Materials Research and Technology, 2023
We investigated the effect of C content on the superplasticity of medium Mn steel through high-temperature tensile testing of Fe–7Mn-(0–0.35)C (wt%) steels at temperatures ranging from 490 °C to 720 °C with an initial strain rate of 1.0 × 10−3 s−1 ...
Hyung-Jin Cho, Hyun-Bin Jeong, Jin-Young Lee, Young-Kook Lee   +3 more
doaj   +1 more source

Direct Observation of Grain Boundary Sliding in Forsterite Bicrystals

, 2023
Olivine is the most abundant mineral in Earth’s mantle, and its rheology is likely to control upper-mantle convection. While the rheology of olivine is widely studied, little is known about the rheology of olivine grain boundaries and their ...
Singh, Shobhit Pratap, Mecklenburgh, Julian, Marquardt, Katharina, Hansen, Lars, Wheeler, John, Mariani, Elisabetta, Thom, Christopher   +6 more
core   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Low-temperature superplastic deformation mechanism of ultra-fine grain Ti–6Al–4V alloy by friction stir processing

Journal of Materials Research and Technology
The ultra-fine grain Ti–6Al–4V alloy sheet was successfully achieved by friction stir processing (FSP). The low-temperature superplastic deformation mechanism of Ti–6Al–4V alloy under the strain rate of 3 × 10−4 s−1 at 600 °C was studied by scanning ...
Fei Qiang, Shewei Xin, Xingyang Tu, Huan Wang, Ping Guo, Hongmiao Hou, Zhiwei Lian, Lei Zhang, Wentao Hou   +8 more
doaj   +1 more source

Effect of Rare Earth Yttrium on the Hot Ductility of Fe-36Ni Invar Alloy

High Temperature Materials and Processes, 2014
The hot ductility of Fe-36Ni invar alloy doped with and without yttrium was investigated using a Gleeble-3800 thermal-mechanical simulator over the temperature range 850–1050 °C and the improvement mechanism of the hot ductility was analysed with a ...
Yu Y. C., Liu H. T., Chen W. Q., Zheng H. G.   +3 more
doaj   +1 more source

Quantitative study of superplastic deformation mechanism of 5A90 Al-Li alloy

Cailiao gongcheng, 2019
The contribution of grain boundary sliding(GBS) and intragranular dislocation slip(IDS) in the 5A90 Al-Li alloy during superplastic deformation at 480℃ and an initial strain rate of 1×10-3s-1 was quantitatively investigated by analyzing the deformation ...
YE Ling-ying, YANG Dong, LI Hong-ping, ZHANG Xin-ming, LIAO Rong-yue   +4 more
doaj   +1 more source

On the deformation-induced grain rotations in gradient nano-grained copper based on molecular dynamics simulations

Nanotechnology Reviews, 2021
In this paper, the mechanical behavior of gradient nano-grained copper under uniaxial deformation was investigated using molecular dynamics simulations.
Zhang Jiarui, Yang Fan, Liu Yaping, Zhong Zheng, Zhao Jinfeng   +4 more
doaj   +1 more source