Analysis of the Mechanical Behavior, Creep Resistance and Uniaxial Fatigue Strength of Martensitic Steel X46Cr13

Abstract

The article deals with the analysis of the mechanical behavior at different temperatures, uniaxial creep and uniaxial fatigue of martensitic steel X46Cr13 (1.4034, AISI 420). For the purpose of considering the aforementioned mechanical behavior, as well as determining the appropriate resistance to creep and fatigue strength levels, numerous uniaxial tests were carried out. Tests related to mechanical properties performed at different temperatures are presented in the form of engineering stress-strain diagrams. Short-time creep tests performed at different temperatures and different stress levels are presented in the form of creep curves. Fatigue tests carried out at stress ratios R=0.25 and R=−1 are shown in the form of S–N (fatigue) diagrams. The finite fatigue regime for each of the mentioned stress ratios is modeled by an inclined log line, while the infinite fatigue regime is modeled by a horizontal line, which represents the fatigue limit of the material and previously was calculated by the modified staircase method. Finally, the fracture toughness has been calculated based on the Charpy V-notch impact energy.

Review and analysis of fire and explosion accidents in maritime transportation

“…The most effective method to 653 prevent fatigue failure is in design improvement by avoiding sharp surface tears, surface 654 discontinuities and tensile residual stresses and improving fabrication and fastening 655 procedures (Maleque and Salit, 2013b). Creep occurs when the metal, under certain loads is 656 heated normally over 40% of melting temperature of the material (Brnic et al, 2017). An 657 understanding of behaviour of a material at high temperature with certain load over a period 658 of time is a useful approach.…”

S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue

“…Dynamic strain aging is considered to be the cause of increased flow stress with an increase in temperature up to about 200 • C. However in order to select the appropriate material for the purpose of a particular application, it is of interest to have insight into the behavior of some materials at prescribed environmental conditions. In this regard, in [18] the mechanical properties of a martensitic steel were investigated.…”

Prediction of Fatigue Crack Growth in Metallic Specimens under Constant Amplitude Loading Using Virtual Crack Closure and Forman Model

“…These values are denoted with ** in Table 1. In addition, since values of plane-strain fracture toughness were not available for steels used in this paper, values were estimated based on Charpy impact energy (CVN) for a given material using Roberts-Newton formula [4,31]: (18) and are denoted with * in Table 1. Specimen dimensions can be seen in Figures 5 and 6.…”