CONTEXT Remelting previously cast base metal alloy can adversely affect the mechanical properties of the alloy and necessitates addition of new alloy. AIMS To study the effect of remelting different combinations of new and used cobalt-chromium (Co-Cr) alloy on its mechanical properties and microstructure. MATERIALS AND METHODS Using induction casting, 24 tensile test specimens were prepared...

The aim of t h i s work i s t o develop the economical product ion process of t h e AI-Li master a l l o y f r e e from m e t a l l i c sodium, calcium and potassium. Th i s master a l l o y can be used f o r aluminium-li thium a l l o y s f o r s t r u c t u a l m a t e r i a l s of a i r c r a f t s , automobi les and robots . Moreover t h e Al-Li master a l l o y with l i t h ium con ten t o...

UNLABELLED Cell culture system has been used to evaluate alloy cytotoxicity under different environments, testing the extracts, but the effect of temperature variation on the cytotoxicity of dental alloys has not been analyzed. OBJECTIVE The aim of the present study was to investigate if temperature variation could affect dental alloy cytotoxicity, testing alloy extracts in an epithelial cell...

2024 Aluminum alloy was squeezed cast by the Gas Induced Semi Solid (GISS) process. Effect of artificial aging on microstructure and mechanical properties of this alloy was studied in the present work. The solutionized specimens were aged hardened at temperatures of 175°C, 200°C, and 225°C under various time durations. The highest hardness of about 77.7 HRE was attained from specimen aged at th...

Abstract With the popularization of friction stir welding (FSW), 5083-H321 and 6061-T6 aluminum alloy materials are widely used during FSW process. In this study, fatigue life with two materials, i.e., alloy, studied. Fatigue tests were carried out on base metal these as well butt joints overlapping samples. The principle equivalent structural stress method is to analyze test data materials. re...

In this study the effect of Al–5Ti–1B grain refiner on the structural characteristics and wear properties of Al–12Zn–3Mg–2.5Cu alloy was investigated. The optimum amount for Ti containing grain refiners was selected as 2 wt.%. T6 heat treatment, (i.e. heating at 460 °C for 1 h before water quenching to room temperature and then aging at 120 °C for 24 h) was applied for all specimens before wear...

A series of Al-4Ti master alloys with various TiAl₃ particles were prepared via pouring the pure aluminum added with K₂TiF₆ or sponge titanium into three different molds made of graphite, copper, and sand. The microstructure and morphology of TiAl₃ particles were characterized and analyzed by scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS). The microstructure of TiA...

The present study continues the research efforts of recent years on the 1 Faculty of Foundry Engineering, AGH University of Science and Technology, 23 Reymonta Street, 30-059, Kraków, Poland 2 School of Materials, The University of Manchester, Grosvenor Street, Manchester, M1 7HS, UK 3 Polish Academy of Sciences, 25 Reymonta Street, 30-059, Kraków, Poland Crystallisation curves Regarding the cr...

The galvanic corrosion behavior of Alloy 690 coupled with magnetite has been investigated in an alkaline solution at 30 °C and 60 °C using a potentiodynamic polarization method and a zero resistance ammeter. The positive current values were recorded in the galvanic couple and the corrosion potential of Alloy 690 was relatively lower. These results indicate that Alloy 690 behaves as the anode of...