Article
Chemistry, Physical
Anna Dobkowska, Agata Sotniczuk, Piotr Bazarnik, Jaroslaw Mizera, Halina Garbacz
Summary: The corrosion behavior of AA5457 alloy sheet is complex and involves trenching around coarse Si-rich particles, crystallographically-grown large pits, and the formation of multiple tiny pits around Si-rich nanoparticles. Bending AA5457 changes the shape and distribution of Si-rich coarse particles, increases the dislocation density in the material, especially around Si-rich nanoparticles, all leading to a lower corrosion behavior in the bending area.
Article
Materials Science, Multidisciplinary
Ali Yuruk, Bekir Cevik, Nizamettin Kahraman
Summary: The use of aluminum alloys is increasing rapidly in various industries due to their low density, excellent corrosion resistance, good forming properties, and increasable mechanical properties. However, joining different aluminums and their alloys via welding is very difficult despite their widespread usage areas.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Manufacturing
Tapapriya Mahanta, Soumyajit Das, Ashutosh Pattanaik, Mantra Prasad Satpathy
Summary: Ultrasonic metal welding (USMW) was used in an experimental study to join Al and SS thin sheets with varying surface conditions and weld energies. The aim of this research was to improve joint performance by controlling process parameters. The highest tensile shear and T-peel loads were achieved for Al/SS joints made at a weld energy of 2550 J under lubricated surface conditions. Increasing weld energy resulted in higher bond density, lower effective thickness, and increased plastic deformation at the Al side. The microhardness values at the welding interface indicated the influence of natural aging and softening at the weld zone. Various features such as mutual diffusion, wavy-like interface, dimple islands, and swirl pattern flow were observed at the Al/SS weld cross-section and fracture surfaces.
MATERIALS AND MANUFACTURING PROCESSES
(2023)
Article
Engineering, Manufacturing
Shayan Shirzadian, Sukanta Bhowmick, Ahmet T. Alpas
Summary: This study investigated the progression of galling during the punching of aluminum sheets using different lubrication methods and coatings on the tool surface. The results showed that by using the correct lubricant and coating, the galling rate can be reduced.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Multidisciplinary
Sudhy S. Panicker, Sushanta Kumar Panda
Summary: The study presents a comparative investigation of the nonisothermal warm forward redrawing behavior of AA5754-H22 and AA6082-O sheets, demonstrating a new warm forward redrawing process. A thermomechanical finite element (FE) model was developed to predict the properties of the redrawn cups, based on temperature-dependent yield criterion and strain rate sensitive hardening model. The study also evaluated the post-forming characteristics of redrawn cup wall, showing better properties for AA5754-H22 cups compared to AA6082-O cups.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Wenchuang Liu, Yujiao Ke, Kenjiro Sugio, Xingang Liu, Ying Guo, Gen Sasaki
Summary: Accumulative roll bonding (ARB) was used to fabricate aluminum matrix composites (AMCs) with 2 vol% Al2O3 particles. The evolution of matrix microstructure and particle spatial distribution was studied by measuring different variables. It was found that the composites had significantly refined grains and improved particle spatial uniformity after ARB cycles. The final composites showed higher strength but lower elongation compared to the monolithic sheets.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Rahul Datta, Dharavathu Raja, Marrapu Bhargava
Summary: Friction stir tailor-welded blanks are widely used due to their improved forming limits, uniform strain distribution, and material savings, but research on their formability is limited. This study investigated the impact of different weld parameters on the mechanical properties and formability of friction stir-welded AA5754 sheets, and correlated them with microstructure and texture studies.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Zhichao Liu, Zhihua Nie, Xianjin Ning, Xiuchen Zhao, Xiaodong Yu, Fuchi Wang, Chengwen Tan
Summary: This study investigates the mechanical response and microstructural evolution of Ni-27 W alloys, finding that they exhibit a high strain hardening capacity mainly due to the dominance of planar slip mechanism in plastic deformation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Industrial
Haiping Yu, Qiuli Zheng
Summary: This study investigates the macro- and micro- mechanisms of plasticity enhancement in DP600 steel sheets during hybrid uniaxial tension. It is found that quasi-static pre-deformation significantly impacts the material constitutive and enhances formability, while the inertial effect and additional stress increment in the dynamic EHF process play important roles in improving final plasticity. Additionally, nucleation from existing dislocations at high strain rates and deformation twins in the martensite phase contribute to the plasticity improvement.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
M. Paidar, S. Mehrez, O. O. Ojo, V. Mohanavel, B. Babaei, M. Ravichandran
Summary: The mechanical properties of the improved heat-treated AA6061-T6/AA5754-O aluminum joints were enhanced by adjusting the tool rotational speed and applying a heat treatment process, which successfully reduced unbonded regions and increased the load-bearing capacity of the joints.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Mohamed Mohamed Zaky Ahmed, Sabbah Ataya, Mohamed Mohamed El-Sayed Seleman, Tarek Allam, Naser Abdulrahman Alsaleh, Essam Ahmed
Summary: This study investigated the influence of friction stir welding tool rotation rate and welding speed on grain structure evolution in the nugget zone of AA5083/AA5754 weldments. It was found that rotation rate had a greater impact on grain size reduction than welding speed, with the texture mainly characterized as simple shear. The hardness distribution indicated a diffused softened welding zone, and the tensile properties of the FSWed joints were evaluated and presented.
Article
Nanoscience & Nanotechnology
Soumyabrata Basak, Mounarik Mondal, Kun Gao, Sung-Tae Hong, Sam Yaw Anaman, Hoon-Hwe Cho
Summary: Experimental studies on friction stir butt-welded aluminum-clad-aluminum thin sheets were conducted, and the joint's microstructure and mechanical properties were evaluated using microscopy and analysis methods.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Yuanyuan Wang, Xin Sun, Jijun Zhao
Summary: This study examines the deformation behavior of irradiated tungsten at elevated service temperatures using mechanism-based crystal plasticity finite element framework, considering thermal softening and irradiation hardening. The model successfully predicts the engineering stress-strain response and captures the formation and evolution of shear bands.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Zhe Jia, Ben Guan, Yong Zang, Yuan Wang, Lei Mu
Summary: The study investigated the flow properties of an aluminum alloy under different strain rates and developed a modified Johnson-Cook model to accurately predict its behavior with a prediction error of only 0.0415%.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Xingchen Liu
Summary: This paper explains the macroscopic mechanical behavior of foamed concrete by combining microscopic failure mechanisms and the laws of energy evolution. It proposes the mechanisms of pore fracture and recombination, as well as mechanical interactions within thin-walled structures. Additionally, it demonstrates the capacity of foam concrete to efficiently absorb and dissipate external energy, making it a potential buffering material.
