This article presents the results of heat-treated low-alloy steel microstructure research using Deform 3D program, which allows determining optimal technological parameters hardening. The object is pipe grade 12CrMoV. To determine and evaluate heat treatment affecting increase in mechanical properties, modeling specified program were used. compare results, we used method for properties during t...

We present a study of the parallel tempering (replica exchange) Monte Carlo method, with special focus on the feedbackoptimized parallel tempering algorithm, used for generating an optimal set of simulation temperatures. This method is applied to a lattice simulation of a homopolymer chain undergoing a coil-to-globule transition upon cooling. We select the optimal number of replicas for differe...

The mechanical properties after tempering and intercritical annealing of medium manganese steels with 4 wt% Mn for forging applications are presented. After subsequent air cooling, heat treatments were performed, specifically from 250 450 °C between 600 675 °C. Tensile properties, Charpy V-notch impact toughness, hardness determined compared microstructural features characterized by metallograp...

SKD11 steel is a tool material. must have strong and tough mechanical properties. So to improve the quality ability of accept external loads forces, it necessary heat treatment. The treatment carried out in this research hardening – tempering. process by heating at austenitic temperature 950 °C holding time 30 minutes. Then fast cooling (quenching) with water media. As for tempering variations ...

This article presents the Laser Beam Direct Energy Deposition (DED-LB) process as a method to build graded austenitic-to-martensitic steel junction. Builds were obtained by varying ratio of two powders during DED-LB processing. Samples with gradual transitions successfully using high dilution rate from one layer next. Long austenitic grains are observed on 316 L side while martensitic Fe–9Cr–1M...

Impact testing methodology is findings the applications for determining the impact strength of the different materials. Oneof the most important characteristics of structural steels, toughness is assessed by the Charpy V-notch impact test. The objective of the research was to maximize the impact toughness by selecting various combinations of Charpy Impact test parameters. In this paper, experim...

Detailed studies of the thermodynamic properties of selected binary Lennard-Jones clusters of the type X13-nYn (where n=1, 2, 3) are presented. The total energy, heat capacity, and first derivative of the heat capacity as a function of temperature are calculated by using the classical and path integral Monte Carlo methods combined with the parallel tempering technique. A modification in the pha...