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Article
Mechanical and Microstructural Analyses of Advanced High-strength Steels
The microstructure and fracture behaviour of two advanced high-strength steels designed for automotive components were studied. The steels were produced by the thin-strip continuous casting and hot rolling rou...
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Article
Characterization of Dissimilar Welds of Carbon Steels and Ni-Filler Alloy
A weldment made of two different carbon steel plates using a nickel-based filler alloy was characterized. The studies involved microhardness testing, light optical and scanning electron microscopy, energy-disp...
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Article
Simulation of Neutron Irradiation Damage in Stainless Steel by Cold Rolling
Simulation of irradiation damage in a stainless-steel type 304L was studied by means of cold rolled samples that were then subjected to different annealing cycles to assess their recovery and compare it with t...
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Article
Optimization of the Severe Plastic Deformation Processes for the Grain Refinement of Al6060 Alloy Using 3D FEM Analysis
An analysis in 3D by means of the finite element method was carried out to study three processes for producing bulk fine-grained materials: dual equal channel angular pressing (DECAP), equal channel angular pr...
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Chapter and Conference Paper
Fatigue of Steels Used in the Manufacture of Components for Heavy Load Vehicles
The demand for the reduction of pollution emissions and of fuel consumption has promoted the reduction in weight of passenger and heavy load vehicles. In particular in these last ones, it is not only desired t...
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Article
High-Temperature Oxidation and Pickling Behaviour of HSLA Steels
The high-temperature oxidation behaviour of three boron-containing HSLA steels was studied at 800 and 900 °C in laboratory still-air conditions. At both temperatures, the oxidation rate of the specimens was in...
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Article
High Temperature Oxidation of the Haynes 282© Nickel-Based Superalloy
Nickel-based superalloys are used in applications where corrosion and oxidation resistance at high temperatures are required together with microstructural stability. Superalloys with different metallurgical ch...
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Article
Effect of Tempering on the Oxidation Resistance of a Work Roll Grade High-Chromium White Cast Iron
The high-temperature oxidation resistance of as-cast and heat-treated specimens of a high-chromium white cast iron for hot mill work rolls was investigated by gravimetric means under isothermal oxidation condi...
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Article
High Temperature Oxidation of a Work Roll Grade High-Chromium White Cast Iron
High-chromium white cast iron is a common material for the manufacture of the work rolls used in the finishing stands in hot strip mills. The high temperature oxidation behaviour of as-cast and heat-treated hi...
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Article
Oxide Structures Formed During the High Temperature Oxidation of Hot Mill Work Rolls
The high temperature isothermal oxidation behaviour of work rolls and the oxide structures resulting from this process are presented. Oxidation of these alloys at 615 °C under various environmental conditions ...
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Article
Effect of the High-Temperature Deformation on the M s Temperature in a Low C Martensitic Stainless Steel
The effects of cooling rate and plastic deformation at 1100 °C on the start of the austenite-to-martensite transformation in a low carbon Fe-12Cr stainless steel were investigated by dilatometry and thermal an...
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Article
Rheological and Microstructural Study of A356 Alloy Solidified under Magnetic Stirring
Results on the rheological behavior of an A356 alloy compressed between parallel plates in the semisolid state are presented in this work. The tests were performed on cylindrical specimens machined from billet...
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Article
Multi-Objective Optimization of Corrosion Rate Parameters in Refining Process Using Particle Swarm Optimization
In this paper, a Particle Swarm Optimization (PSO) algorithm is presented to find the optimal combination of corrosion rate parameters for a refining process in the oil industry. The experimental data in this ...
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Article
High Temperature Oxidation of a Work Roll Grade High Speed Steel
High speed steels are used for the manufacture of the work rolls used in hot rolling steel mills. An understanding of the degradation phenomena of work rolls is essential, particularly in fields related to the...
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Article
LDL from obese patients with the metabolic syndrome show increased lipid peroxidation and activate platelets
This study assessed oxidative stress in LDL from obese patients with the metabolic syndrome and compared it with that in LDL from type 2 diabetic patients or control volunteers. It also determined the effect o...
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Article
Failure Modes of the Oxide Scale Formed on a Work Roll Grade High Speed Steel
The behaviour of an oxide scale grown on the surface of a high-speed steel subjected to thermal cycling was studied. The oxide layer formed on the steel by means of the exposure of samples of this material to ...
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Article
Characteristics of Phenolic-Urethane Cold Box Sand Cores for Aluminum Casting
This work presents the results of a series of tests carried out on mixtures of sand and binders used in phenolic-urethane cold box cores. Two resin binders and silica sand with two grain size distributions wer...
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Article
Thermal and Microstructural Analysis of an A356 Aluminium Alloy Solidified under the Effect of Magnetic Stirring
The solidification kinetics and microstructural characteristics of an A356 aluminum alloy subjected to magnetic stirring during solidification was studied by metallographic and thermal analyses. The alloy was ...
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Article
Effect of Solidification Rate and Heat Treating on the Microstructure and Tensile Behavior of an Aluminum-Copper Alloy
An aluminum-copper alloy of the A206 type was melt and cast in molds that promote a thermal gradient during solidification to study the effects that solidification rate exerts on the microstructure of the mate...
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Article
Influence of dendrite arm spacing on the thermal conductivity of an aluminum-silicon casting alloy
The photoacoustic technique and the thermal relaxation method were used to determine the thermal conductivity of some representative samples obtained from an aluminumsilicon casting alloy A319. This material w...
