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 mech...

A calculation method for the fatigue limit of components made high-strength steels that fail at inclusions is described. The consists two parts: first, size failure-critical determined based on metallographic investigations. Then, expected inclusion sizes using a fracture mechanics model. Influencing factors such as sample size, heat-treatment conditions, and mean stresses are considered. model...

Fine-grained steels belonging to the HSLA group (High-Strength Low-Alloy steels) of are becoming increasingly popular and used in both statically dynamically stressed structures. Due method their production, thus also use obtain required mechanical properties, it is really necessary limit heat input values for these during welding. When applying temperature cycles, highly heated heat-affected z...

The conclusions of an experimental program involving altered tensile strength and microstructure of stainless compressor valve steel are described. The paper presents the results of measurements of ductility, corrosion resistance, bending fatigue strength and damping. Encouraging indications have been achieved concerning the possibilities to further improve the characteristics of current materi...

There are many instances where the use of weight-saving polymer composite material for an entire structure is either too complex, too expensive or unfeasible. In these circumstances the use of a hybrid structure can incorporate the benefits of traditional (e.g. steel ) construction coupled with the advantages of composite materials [e.g. glass-reinforced polymers, glass-reinforced plastic (GRP)...

• An HSLA steel was designed with the Fe 2 SiTi phase as its major strengthening phase. The Heusler phase, SiTi, can act grain refiner and precipitation strengthener. Precipitation behavior of compound is affected by Nb partitioning. Record high vol% nanosized precipitates lead to record hardness. remarkable combination strength, toughness, weldability that characterizes high-strength low-alloy...

Mechanical properties as well crack resistance and stress corrosion cracking (SCC) parameters of ultralow-carbon martensite steels (ULMS) type 05H2G2B HSLA pipe steel 10G2FB with a different structures depending on processing are investigated. It is shown that despite higher strength level, SCC ULMS 25–30% than for ferrite-perlite structure close to this subjected quenching tempering.

In shot peening process the work piece surface is struck by a large number of balls and compressive residual stress is generated on the surface. So, mechanical properties such as fatigue strength, stress corrosion resistance, smooth shape and ... will improve. In this paper, the balls with a speed of 100 to 200 m/s were struck on the steel samples and fatigue strength compared with specimens wi...

generaly pressure vessels should withstand internal and external pressures in the form of static or periodic stresses. if the application of such a vessel requires the lowest possible weight, the fracture mechanics approach may be considened in design procedure in order to obtain the minimum wall thickness. in this work the thickness of the vessel wall was determined using k values and smallest...