Deformation diagrams of metals with different types of microstructure damage

Abstract

Articles you may be interested inEffect of porosity and the ordered porous structure type on the mechanical properties of aluminum materials AIP Conference Proceedings 1785, 040092 (2016) Abstract. The damage of microstructure elements under load is considered in the form of voids and micro-porosities of varying extents. A two-level model of a material with random deformation and strength properties of microstructure elements is proposed. Methods of probability theory are applied. Moment functions of several distribution laws are used to characterize the micro-porosities. The degradation of material properties during the service life of the structure is taken into account. The relationship between the strains and the stresses becomes nonlinear. The stress-strain curve for a uniaxial tensile loading of a copper specimen is calculated and compared to experimental data. The influence of microstructure properties on the relationship between the strain and the stress of the material is demonstrated.

Investigation of the complex granulometric composition of suspended particles in seawater

“…Particles up to 960 µm are encountered, which are the aggregations of primary particles with finer fractions obtained by natural coagulation process. Russian Federation and many other countries have adopted standards and protective equipment for welders, which regulate emissions into the atmospheric air [8]. Norms on particle discharges into the marine environment from these technological processes have not been developed.…”

“…Various methods of underwater metal welding are used to carry out these works [5]. An indispensable attribute of underwater welding operations is the formation of suspended particles [6], which are formed by the chemical reaction of calcium and magnesium salts in seawater with metals released during underwater welding [1,[7][8][9]. For timely analysis of anthropogenic load on marine ecosystems, it is necessary to thoroughly and comprehensively study the composition of particulate matter produced by underwater welding.…”

Analysis of the Multi-Directional Forging of Aluminium Alloy 7075 Process Parameters: Numerical and Experimental Analysis

“…It also increased the static recrystallization fraction, accelerating grain refinement. [1,13,23,29,30]. However, when temperatures and strains used, are too high, the total plastic deformation becomes immense resulting in damage.…”