This study investigates the influence of a deep cryogenic treatment-abrasive water jet (DCT-AWJ) composite surface modification process on the surface integrity of 7075 aluminum alloy, with single abrasive water jet (AWJ) treatment as the control. Surface morphology, phase composition, residual stress, and microhardness were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and microhardness testing. Under AWJ treatment, the surface roughness increases with jet pressure (0.864, 1.082, and 1.325~$\mu$m at 5, 10, and 15~MPa). Under DCT-AWJ treatment, the roughness decreases with increasing cryogenic treatment time but increases with jet pressure, and it is lower tha... More >

The present study systematically investigates the effects of surface nitriding treatment on the laser-assisted machining behavior of TC4 titanium alloy. Numerical simulations were conducted using the ABAQUS finite element platform to elucidate the influence of nitriding on cutting force, cutting temperature, and residual stress evolution. A three-factor, three-level orthogonal experimental design was established, considering nitriding concentration (0.2%-0.8%), laser power (500-1500 W), and laser scanning speed (50-90 m/min), to examine the coupled effects of these parameters. The results reveal that an increase in laser scanning speed leads to a reduction in both cutting force and cutting t... More >

Ti-6Al-4V titanium alloy (TC4) has been extensively applied in advanced manufacturing fields owing to its outstanding combination of mechanical properties and corrosion resistance. However, its poor machinability remains a critical challenge that limits further application. In this study, the effects of three categories of heat treatment processes, including annealing, solution treatment, and aging treatment, comprising eight specific heat treatment schemes, on the precision cutting performance of TC4 alloy were systematically investigated using DEFORM-3D numerical simulations. The results demonstrate that stress-relief annealing and full annealing effectively reduce cutting forces by up to... More >

High-entropy alloy (HEA) coatings have become a candidate for corrosion protection of marine engineering equipment in harsh service environments. In this paper, the effect of laser scanning power on the microstructure and electrochemical corrosion resistance of HEA coating prepared by Extremely High-speed Laser Cladding (EHLC) was investigated. The coating was prepared by EHLC technology. The microstructure of the coating was characterized by XRD and SEM. The corrosion resistance of the coating in \(3.5\%\) NaCl solution was investigated by electrochemical measurement. The results show that: With the increase of scanning power, the sputtered particles of the coating decreased, but the surfac... More >

The water jet surface modification technology does not introduce thermal stress and thermal deformation during operation, reducing changes in the material's phase transformation temperature or grain growth, and avoiding problems related to thermal stress and deformation. It contains no chemical substances, posing no environmental pollution, and features low cost. It enables treatment of surfaces in narrow spaces, deep grooves, and on small components, and can operate under complex environmental conditions. Moreover, it is easy to mechanize and automate, showing great application prospects across many industries. This paper first reviews the development history and working principles of high-... More >

In the rapidly evolving landscape of science and engineering, materials remain the backbone of technological progress. They define the strength of our bridges, the reliability of our aircraft, the performance of our electronics, and the sustainability of our infrastructure. As innovation accelerates and societal demands evolve, a central question looms larger than ever: how can we ensure that materials are not only high-performing, but also durable, reliable, and fit for long-term service? It is in response to this fundamental question that we launch the Journal of Materials Durability and Engineering (JMDE). This journal aspires to serve as a multidisciplinary and forward-looking platform f... More >