Abstract For the Al-5.0Cu-0.8Mg alloy fabricated by gravity casting, 12h natural aging was added between solution and artificial to study its influence on microstructure mechanical properties. The transitional phases form during following solution, leading a significant increase in microhardness. Meanwhile, this variation accelerates formation growth of stable strengthening same aging. Unfortun...

This paper presents an explanation related to experimental testing in the form of tensile properties Al 6061. 6061 was heat treated by precipitation hardening method. The consisted T4 and T6 treatment. samples were heat-treated at a temperature 430°C for 2 hours, then cooled slowly room temperature. conducted 530°C followed rapid cooling water medium natural ageing 70°C six days. Temperature is...

Objective To evaluate the influence of artificial aging on transformation propagation and fracture resistance zirconia implants. Methods One-piece (with integrated implant abutment, 1P; regular diameter [4.1mm]; n = 16) two-piece separate 2P; wide [5 mm]; implants were embedded according to ISO 14801. A titanium–zirconium (Ti-Zr; 4.1 mm diameter) served as a control (n 16). One subgroup 8) each...

background: aging population and prevalence of diseases like cancer among them have affected general health of the elderly, so that one of the influential factors on health components of elderly patients with cancer is death anxiety, which has important consequences in them. methods: in this cross-sectional (descriptive correlational) study, 130 elderly patients with cancer undergoing chemother...

Objective: This study aimed to investigate the impact of artificial aging on color stability and hardness nanocomposite resin. Methods: Four resin materials were used: Filtek Z350 XT (FZ), Synergy D6 (SD), Grandio (GD), Clearfil Majesty Esthetic (CM). Thirty specimens created from each material, which divided into three (A,B,C) groups 10 each. For values visual lightness (L*), degree redness gr...

Surface roughness is needed in several yttria-stabilized zirconia components used in restorative dentistry for osseointegration or adhesion purposes. This can be achieved by different treatments, which may also modify the microstructure of the surface. Among them, sandblasting and chemical etching are widely used, but their effect on hydrothermal aging of zirconia is not fully understood. In th...