This paper presents a fatigue life prediction model of post-impacted sheets considering the effects dent size and stress ratio. Low-velocity impact tests at four different energies were performed on specimens cut from 2524-T3 7075-T62 aluminium alloy. Following tests, static tensile uni-axial constant amplitude block spectrum experiments conducted. Numerical models generated to determine initia...

The Al2O3-SiC reinforced Al7075 Metal Matrix Composite (MMCs) is fabricated through liquid metallurgical technique. Ceramic particulates were amalgamated into aluminium alloy to achieve improved mechanical properties and wear resistance. Al-7075/Al2O3/SiC hybrid MMCs produced by reinforcing 2%, 3%, 4% 5% of Al2O3 7% SiC particles. Microstructural analysis was carried out evaluate the uniform di...

Selective laser-melted (SLMed) 7075 aluminium alloy is prone to cracking. Erbium (Er) could modify the alloys prevent cracking in traditional manufacturing processes. In present study, Er-modified powders are prepared investigate influence of Er element on crack reduction SLM. The evolution characterised by a scanning electron microscope (SEM), X-ray diffraction (XRD) and high-resolution transm...

The nucleation undercooling of TiB₂/7075 Al matrix composites, the microstructure observed after solidification at different cooling rate, and the size and distribution of TiB₂ particles were investigated. The experimental results have shown that the grain sizes of TiB₂/7075 Al matrix composites firstly decreased, then increased, and finally decreased again with the increase of TiB₂ content. Th...

The present study was undertaken to investigate the effect of aging parameters (time and temperature) on the mechanical properties of Be-and/or Zrtreated Al-Mg-Zn (7075) alloys. Ultimate tensile strength, 0.5% offset yield strength and % elongation measurements were carried out on specimens prepared from cast and heat treated 7075 alloys containing Be and/or Zr. Different aging treatment were c...

Machining is an important part of the industry, one which drilling process. The process utilized in making holes a material. When drill-bit touches material, it causes vibration that can affect quality hole surface. Therefore, analysis addition MR-DVA with natural frequency 1,630.2 Hz on workpiece Aluminium Alloy 7075-T6 as main system conducted. Simulations were carried out range 1,675 – 1,680...

In today’s world, efficiency and margin of safety are prime considerations for any applications. To address such parameters in aerospace or high-tech consumer products, there still limitations terms capabilities from a material perspective. Aluminium 7075 is predominantly used as combination these applications, but it has many drawbacks early wear/friction, low fatigue life cycle, high weight r...