Dependence of hardness to the applied load of the 42CrMo4 steel manufactured by MIM process
Journal Title: Journal of New technology and Materials - Year 2016, Vol 6, Issue 1
Abstract
For the purposes of this article the hardness of material 42CrMo4 steel which is manufactured by metal injection molding (MIM) process was measured by Vickers method. When determining hardness the following loads: 196,1; 294,1; 392,2; 490,2; and 980,4 N were used. The objective was to determine the unknown relationship between applied load and hardness. A numerical processing of the experimental data was performed in the software package MATLAB (v.R2012.a, The MathWorks, Inc., Natick, MA, USA). The impact of the load on the hardness was determined by regression analysis. In calculating the undetermined coefficients two mathematical models were used, Meyer’s law and a model of resistance proportional to the properties of the sample (PSR). The results show that used mathematical models very well describe the effect of the load on the measured hardness.
Authors and Affiliations
Ana Fudurić, Nikola Šimunić, Denis Kotarski
Predicted theoretical efficiency fornew intermediate band solar cells (IBSC) based on GaAs1-xNx
Intermediate band solar cells are one type of third generation photovoltaic devices. Indeed, the increase in the power conversion efficiency is achieved through the absorption of low energy photons while preserving a lar...
Effects of Nickel substitution on crystalline structure and superconducting properties of YBa2Cu3O7- ceramics.
In this study, nickel-substituted Y〖Ba〗_2 (〖Cu〗_(1-x) 〖Ni〗_x )_3 O_(7-δ) ( 0 ≤x ≤4 at.%) superconductor samples were prepared by the conventional solid state reaction method. The effects of Ni substitution on the s...
Detection of electrical faults with infrared thermography
One of the problems that concern most often the electricians is how to determine the conditions or the state of operation of electrical systems quickly, without physical contact with the components and without disconnect...
Effect of Al doping on the structural and optical properties of SnO2 thin films elaborated by sol-gel technique
In this study, the influence of increasing of the Al concentration on the structural and optical properties of SnO2 thin films were investigated. Pure and aluminum-doped SnO2 thin films were prepared by sol–gel depositio...
Unsteady Numerical simulation of turbulentforced convection in a rectangular pipe provided with inclined porous baffles
This study presents an Unsteady Numerical simulation of turbulent forced convection in a rectangular pipe with inclined porous baffles. An Unsteady Numerical simulation was carried out to study the thermal performances o...