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View article: Press Hardening of High-Carbon Low-Density Steels
Press Hardening of High-Carbon Low-Density Steels Open
In this study, sheets of experimental high-carbon low-density steels (LDSs) with a thickness of 1.7 mm were processed in a combined tool designed for press-hardening. Press hardening, also known as hot stamping or hot press forming, is a m…
View article: Optimization of MoNiCr Alloy Production Through Additive Manufacturing
Optimization of MoNiCr Alloy Production Through Additive Manufacturing Open
One of the concepts behind Generation IV reactors is a molten salt coolant system, where the materials for the reactor itself and for the primary and secondary circuit components are subjected to extreme chemical and thermal stresses. Due …
View article: Kinetics of Austenite Decomposition in 54SiCr6 Steel during Continuous Slow Cooling Conditions
Kinetics of Austenite Decomposition in 54SiCr6 Steel during Continuous Slow Cooling Conditions Open
In this study, dilatometry and metallography were used to investigate the effect of silicon and copper alloying on the decomposition kinetics of 54SiCr6 steel during continuous slow cooling. It is different from the published literature fo…
View article: EVOLUTION OF MICROSTRUCTURE AND EMBRITTLEMENT DURING THE TEMPERING PROCESS IN SiCrCu MEDIUM-CARBON STEELS
EVOLUTION OF MICROSTRUCTURE AND EMBRITTLEMENT DURING THE TEMPERING PROCESS IN SiCrCu MEDIUM-CARBON STEELS Open
The effect of Cu and Si contents on the evolution of embrittlement during a heat treatment consisting of quenching into an oil bath and tempering in the range 200–500 °C was investigated in medium-carbon steels with 0.48 w/% and 0.57 w/% o…
View article: Mechanical Properties of High Carbon Low-Density Steels
Mechanical Properties of High Carbon Low-Density Steels Open
The paper presents the possibilities of heat treatment of low-density structural steels usable for springs. Heats have been prepared with chemical compositions 0.7 wt% C and 1 wt% C, as well as 7 wt% Al and 5 wt% Al. Samples were prepared …
View article: Effect of Cu Alloying on Mechanical Properties of Medium-C Steel after Long-Time Tempering at 500 °C
Effect of Cu Alloying on Mechanical Properties of Medium-C Steel after Long-Time Tempering at 500 °C Open
This research studies the influence of the copper alloying of medium-carbon steel on mechanical properties after quenching and tempering at 500 °C. The microstructure was characterised using SEM, EBSD, TEM, and XRD analysis. The mechanical…
View article: Effect of Double-Step and Strain-Assisted Tempering on Properties of Medium-Carbon Steel
Effect of Double-Step and Strain-Assisted Tempering on Properties of Medium-Carbon Steel Open
The present work aimed to study the properties of medium-carbon steel during tempering treatment and to present the strength increase of medium-carbon spring steels by strain-assisted tempering (SAT). The effect of double-step tempering an…
View article: Enhanced Spring Steel’s Strength Using Strain Assisted Tempering
Enhanced Spring Steel’s Strength Using Strain Assisted Tempering Open
Spring steels are typical materials where enhancement of mechanical properties can save considerable mass for transport vehicles, in this way the consumption of fuel or electric energy can be decreased. A drastic change in both the resulti…
View article: A New Alloying Concept for Low-Density Steels
A New Alloying Concept for Low-Density Steels Open
This paper introduces a new alloying concept for low-density steels. Based on model calculations, samples—or “heats”—with 0.7 wt% C, 1.45 wt% Si, 2 wt% Cr, 0.5 wt% Ni, and an aluminium content varying from 5 to 7 wt% are prepared. The allo…
View article: Effect of 1.5 wt% Copper Addition and Various Contents of Silicon on Mechanical Properties of 1.7102 Medium Carbon Steel
Effect of 1.5 wt% Copper Addition and Various Contents of Silicon on Mechanical Properties of 1.7102 Medium Carbon Steel Open
Requirements for mechanical properties of steels are constantly increasing, and the combination of quenching and tempering is the method generally chosen for achieving high strength in medium carbon steels. This study examines the influenc…
View article: Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels
Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels Open
Understanding the tempering behavior of medium carbon steels is mandatory if their mechanical properties are to be improved. For an optimal technology to be developed for this purpose, a substantial experimental basis is needed to extract …
View article: Influence of Si and Cu content on tempering and properties of 54SiCr6 steel
Influence of Si and Cu content on tempering and properties of 54SiCr6 steel Open
The 54SiCr6 steel belongs to spring steels which excel high strength and at the same time reaches high values of reduction of area and sufficient value of elongation. Nowadays, new methods are searched and examined how to get better proper…
View article: Effects of Rotary Swaging Parameters and Artificial Ageing on Mechanical Properties and Microstructure of 2024 Precipitation-Hardenable Aluminium Alloy
Effects of Rotary Swaging Parameters and Artificial Ageing on Mechanical Properties and Microstructure of 2024 Precipitation-Hardenable Aluminium Alloy Open
This work concerns mechanical properties in relation to microstructural changes in hardenable EN AW-2024 aluminium alloy in wrought and heat treated condition. The treated material benefits from synergistic effects of hardening mechanisms.…
View article: Grain Structure and Microhardness Development of Twin-Roll Cast Aluminum Strips after Constrained Groove Pressing
Grain Structure and Microhardness Development of Twin-Roll Cast Aluminum Strips after Constrained Groove Pressing Open
Twin-roll cast aluminum strips based on EN AW 3003 alloy with a small addition of Zr and Cr further processed by constrained groove pressing (CGP) were studied in this work.Vickers microhardness measurements were used to investigate an inh…
View article: Behaviour of new ODS alloys under single and multiple deformation
Behaviour of new ODS alloys under single and multiple deformation Open
The application of innovative processing techniques to conventional raw materials can lead to new structural materials with specific mechanical and physical properties, which open up new possibilities of use in some areas of industry.The p…
View article: Recrystallization behaviour of a nickel-based superalloy
Recrystallization behaviour of a nickel-based superalloy Open
The thermomechanical processing of a nickel-based superalloy is the way to considerably influence the grain size.A uniform coarse-grain size increases the creep strength and the crack-growth resistance.In this work, the processing for achi…
View article: Influence of the carbide-particle spheroidisation process on the microstructure after the quenching and annealing of 100CrMnSi6-4 bearing steel
Influence of the carbide-particle spheroidisation process on the microstructure after the quenching and annealing of 100CrMnSi6-4 bearing steel Open
Bearings are used mostly in the quenched and tempered state, e.g., steel 100CrMnSi6-4 with a microstructure of low-tempered martensite and carbide particles undissolved during the quenching austenitization.The size and density of the parti…