The Vickers hardness of 21 as-cast Ni-Ru-Zr alloys different compositions were studied, and nanohardness indentations done on the individual phases. results used to explain brittleness by assessing proportions phases, their morphologies. compound varied between 704 - 1289 HV, with ~ZrRu2 being hardest phase, ~Zr2Ni7 least hard phase. sample was 300 1015 HV. Most samples brittle, although there ...

Nodular cast iron insert will be used as the inner component of nuclear fuel disposal canister. The outer cover of the canister is copper tube of 50 mm nominal thickness. Nodular cast iron insert is cast around several steel channels, which also strengthen the structure. The mechanical properties of the cast iron insert will be tested according EN-1563 /1/. According the specifications 100% NDT...

High-strength microalloyed steels are widely used in various branches of technology and industry due to the simultaneous combination high indicators strength, ductility, fatigue, corrosion resistance, other service properties. This is achieved reasonable choice optimal chemical composition parameters temperature-deformation treatment steel that provide a synergistic effect on dispersed microstr...

in this study, the changes in microstructure of hp-nb cast heat resistant steel after 8 years of service at high temperatures were investigated. study of microstructure using optical microscopy (om) and scanning electron microscopy (sem) equipped with an energy dispersive spectrometry (eds) showed that the microstructure of this steel in as-cast condition includes an austenitic matrix, and that...

In this paper, the fatigue behavior of titanium microalloyed beam steels were studied by high cycle test and crack growth rate test. The effect Mg addition on in steel was systematically analyzed. According to experimental results, magnesium can effectively modify inclusions reducing size Al2O3 TiN promoting formation finer complex with a MgO·Al2O3 core high-strength steel. number had far less ...

Biomedical materials can improve the life quality of a number of people each year. The range of applications includes such as joint and limb replacements, artificial arteries and skin, contact lenses, and dentures. So far the accepted biomaterials include metals, ceramics and polymers. The metallic biomaterials mainly contain stainless steel, Co-Cr alloys, Titanium and Ti-6Al-4V. Recently, bulk...

   A low carbon Al-killed Ti-added steel was produced in Mobarakeh Steel Complex in Iran. Mechanical properties and microstructural characterizations of steel in the as-cast, hot-rolled, cold-rolled and annealed conditions are presented. Dilatometery tests were carried out to measure the finishing and annealing temperatures of steel. It was found that the addition of small amounts of Ti increas...

Cast, coarse-grained Al-Sc alloys are interesting candidates for high temperature, creepresistant applications due to the formation of a high number density of nanometer sized Al3Sc precipitates [1]. Upon addition of Yb to Al-Sc alloys, Yb replaces the Sc forming Al3(Sc1-xYbx) precipitates (L12 structure) [2]. The resulting alloys have higher creep resistance due to the larger lattice parameter...