The surface finish was extensively studied in usual machining processes (turning, milling, and drilling). For these processes, the surface finish is strongly influenced by the cutting feed and the tool nose radius. However, a basic understanding of tool/surface finish interaction and residual stress generation has been lacking. This paper aims to investigate the surface finish and residual stre...

Age-hardenable aluminum alloys used in aerospace structures are susceptible to environment assisted fatigue crack propagation (EFCP), limiting component durability and safety. The objective is to quantitatively understand EFCP and its inhibition for important aerospace alloys: 7075-T651 (Al-Zn-Cu-Mg), C433-T3 (Al-Cu-Mg), and C47A-T86 (AlCu-Li). EFCP is understood through the hydrogen embrittlem...

Machine Learning focuses on the study of algorithms that are mathematical or statistical in nature order to extract required information pattern from available data. Supervised further sub-divided into two types i.e. regression and classification algorithms. In present study, four supervised machine learning-based models Decision Trees algorithm, K- Nearest Neighbors (KNN) Support Vector Machin...

The corrosion evolution of 2024-T351 and 7075-T651 aluminum alloys in the thin electrolyte layer (TEL) wet–dry alternating cycle (WDAC) environment is studied this work. results show that TEL environment, competitive effect between H+ accelerates reactions deposition sulfate impedes attacks exists during exposure. difference with increasing HSO3−, subsurface intergranular on promoted to form ex...

Surface metal matrix composites offer an excellent solution for applications where surface properties play a crucial role in components’ performance and durability, such as greater corrosion resistance, better wear high formability. Solid-state processing techniques, friction surfacing stir welding/processing, several advantages over conventional liquid-phase methods. This research investigated...

abstract – aluminium 7075- t651 alloys are widely used in the production of light weight structures requiring a high strength to weight ratio and high corrosion resistance. the effect of processing parameters on fatigue life of 7075- t651 aluminium joints produced by friction stir welding was investigated in the present study. welding samples were made by employing rotating tool speed of 770, 9...

The fatigue performance from pre-corroded pits was studied in laser-shock-peened AA7075-T651 with and without a protective ablation-layer. Surface microstructural characterisation showed laser-shock-peening generated residual stresses up to −400MPa, limited hardness moderate surface roughness increase. specimens were exposed 3.5 wt-% sodium chloride solution for different levels of galvanostati...

Abstract A novel solid-state additive manufacturing (AM) process, friction stir deposition (AFS-D), provides a new pathway for additively repairing damaged nonweldable aerospace materials that are susceptible to induced thermal gradients within the microstructure. In this work, we quantify microstructural evolution and mechanical performance of an repaired AA7075-T651 (Al-Zn-Mg-Cu) via AFS-D pr...