4.6 Article

Study on multi-field composite strengthening, surface integrity, and microstructural evolution mechanism of 7075-T6 aluminum alloy

Related references

Note: Only part of the references are listed.
Article Engineering, Manufacturing

Surface strengthening in confined spaces: A novel deflecting abrasive waterjet peening for improving the surface integrity of nickel-based superalloys GH4169

Shu-Lei Yao et al.

Summary: This study proposes a novel DAWJP method for surface treatment of metallic parts, and verifies its effectiveness on the GH4169 material. The results show that the deflecting nozzle with a deflection angle of 1.5mm achieves optimized jet flow velocities and significantly improves the surface hardness and residual stress of the GH4169 material, demonstrating the potential for enhancing surface integrity and mechanical properties of metallic parts.

JOURNAL OF MANUFACTURING PROCESSES (2023)

Article Engineering, Manufacturing

Microstructure and corrosion behavior of 2A12 aluminum alloys by high frequency impacting and rooling

Huijing Zhang et al.

Summary: This study investigated the effects of HFIR treatment on the microstructure, mechanical properties, and corrosion resistance of 2A12 aluminum alloy. The results showed that an SPD layer was successfully generated and the average grain size decreased with increased static pressure. The nanomicrohardness, elastic modulus, and tensile strength also increased with static pressure. Among all the samples, the 2A12 aluminum alloy treated with 500 N static pressure exhibited the best corrosion resistance, attributed to factors such as small grain size, compressive residual stress, low surface roughness, and formation of dense passive film.

CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY (2023)

Article Engineering, Aerospace

Advances and challenges on springback control for creep age forming of aluminum alloy

Liwen Zhang et al.

Summary: Creep age forming (CAF) is an advanced forming technology that combines creep deformation and age hardening processes. It has many advantages such as low residual stress, dimensional stability, good performance, and short production cycle, making it optimal for manufacturing large-scale complicated thin-walled components of high strength aluminum alloys in aviation and aerospace industries. However, a major challenge of CAF is the occurrence of springback after unloading, which affects the accuracy of shaping components.

CHINESE JOURNAL OF AERONAUTICS (2022)

Article Metallurgy & Metallurgical Engineering

Simulation of strain induced abnormal grain growth in aluminum alloy by coupling crystal plasticity and phase field methods

Ru-xue Liu et al.

Summary: This study proposes a mesoscale modeling methodology to predict the abnormal grain growth induced by strain in the annealing process of deformed aluminum alloys. By using crystal plasticity finite element analysis and a modified phase field model, the dislocation density, stored deformation energy distribution, and grain evolution process can be effectively calculated.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2022)

Article Engineering, Mechanical

Investigation on surface integrity and fatigue performance in abrasive waterjet peening

Zhe Lv et al.

Summary: In this study, the effects of abrasive waterjet peening on the residual stress, surface roughness, and fatigue performance of a titanium alloy specimen were investigated using numerical simulation and experimental verification. The results showed that higher residual stress could be achieved with higher particle velocity and larger particle diameter, but using larger abrasive particles led to deteriorated surface roughness and decreased fatigue life of the specimen.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING (2022)

Article Crystallography

Performance Analysis of 7075 Aluminum Alloy Strengthened by Cavitation Water Jet Peening at Different Scanning Speeds

Zijun Zhang et al.

Summary: Shot peening technologies can improve material performance and extend the service life of parts. This study investigated the effects of cavitation water jet peening (CWJP) with different scanning speeds on the microstructure and mechanical properties of the surface of 7075 aluminum alloy. The results showed that CWJP can effectively improve the surface properties of the alloy.

CRYSTALS (2022)

Article Materials Science, Coatings & Films

Effects of water jet peening on residual stresses, roughness, and fatigue

A. H. Mahmoudi et al.

Summary: Water jet peening is a surface modification technique that can introduce compressive residual stresses beneath the surface of engineering components. The study found that the horizontal speed of the nozzle, pressure of source, and stand-off distance have a significant influence on residual stresses and fatigue life. Exceeding a certain limit in source pressure can lead to surface crack formations and a decline in fatigue life of the workpiece.

SURFACE ENGINEERING (2021)

Article Engineering, Multidisciplinary

Structure optimization of submerged water jet cavitating nozzle with a hybrid algorithm

Yanzhen Chen et al.

ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS (2019)

Article Materials Science, Multidisciplinary

Molecular dynamics simulation to investigate the orientation effects on nanoscale cutting of single crystal copper

A. Sharma et al.

COMPUTATIONAL MATERIALS SCIENCE (2018)

Article Engineering, Mechanical

The influence of shot peening on the fatigue response of Ti-6Al-4V surfaces subject to different machining processes

Zhengkai Xu et al.

INTERNATIONAL JOURNAL OF FATIGUE (2018)