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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: Metals such as titanium, vanadium, zirconium, niobum, molybdenum and also tantalum and tungsten must be protected at elevated temperatures from the effects of oxygen, nitrogen and hydrogen. For this reason, it is of interest, both from the innovative and practical points of view, to investi[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The developed design methodologies both the material and technological ones will make it possible to improve shortly the quality of materials from the light alloys in the technological process, and the automatic process flow correction will make the production cost reduction possible, and -[...]
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Archives of Materials Science and Engineering
EN Purpose: The purpose of this paper was to experimentally determine the brittleness temperature range of an alloy based on the intermetallic Ni-Al phase matrix. This was done in order to evaluate the applicability of the said alloy for bonding using welding methods, and specifically, whether the char[...]
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Archives of Materials Science and Engineering
EN Purpose: In the paper the results of chemical composition investigations of passive layers formed on implants made of Cr-Ni-Mo steel, Co-Cr-W-Ni alloy and Ni-Ti alloy have been presented. Design/methodology/approach: Chemical composition investigations of the passive layer have been carried out with[...]
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Archives of Materials Science and Engineering
EN Purpose: of this paper is description of stresses in brazing joints of different physical and mechanical properties and evaluation of microstructure and mechanical properties of large dimensional vacuum brazed joints of WC–Co (ISO K05), Fe-TiC sinter plates (Ferro–Titanit Nicro 128) and precipitatio[...]
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Archives of Materials Science and Engineering
EN Purpose: Automotive industry constantly demands high-strength steels which are characterized by the energy absorption possibilities during a collision. Such materials may, in the future, replace the currently used conventional steels. The groups of steels which meet these criteria are the austenitic[...]
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Archives of Materials Science and Engineering
EN The paper deals with the investigation of secondary phases evolution during quenching, quenching and tempering in the high – chromium martensitic GX12CrMoVNbN9-1 (GP91) cast steel. It also includes the analysis of evolution of secondary phases in the as - cast condition and after stress relief annea[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The aim of this review is recapitulating the FMR study of low concentration of magnetic nanoparticles in non-magnetic matrices. Design/methodology/approach: Magnetic nanoparticles exhibit a variety of anomalous magnetic properties and they could be used for forming low concentration in dif[...]
9
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: Attempts were carried out at pad welding and welding of castings made of alloy AZ91D. Technologies were developed to repair such castings by means of welding methods encompassing the choice of weld deposit, welding parameters, heating parameters and the technique of welding. Design/methodo[...]
10
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: Metallic glass wire products are known for their high fatigue strength and their interesting magnetic properties. The thermo-kinetic requirements for fully amorphous structure in these cast alloys require rapid solidifications of the order of 10 to the 6 K per second. This condition imposes[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The work presents the influence of the surface treatment of Ni-Ti alloy, intended for implants applied in urogenital surgery, on their corrosion resistance. The tests were carried out in the simulated urine at the temperature 37 plmin 1 degree centigrade and pH = 5.6-6.4. In particular, the[...]
12
75%
Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The aim of this research was presentation of the Continuous Cooling Transformations (CCT) diagrams and mechanical properties of two new bainite rail steels with working names RB370 and RB390. Design/methodology/approach: The CCT duiagrams was prepared by dilatometric method. The mechanical [...]
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Archives of Materials Science and Engineering
EN Purpose: The goal of this work is to investigate structure and properties of powdersAl₆₇Ti₂₅Fe₈ alloys obtained by mechanical alloying. Design/methodology/approach: The powders of the Al₆₇Ti₂₅Fe₈ alloys were obtained by mechanical alloying method in a planetary Fritsh Pulverisette 5 mill. The change[...]
14
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Archives of Materials Science and Engineering
EN Purpose: The purpose of this paper is to investigate the factors variables influencing the plastic deformation and failure in some high strength metallic materials under high velocity impact. Design/methodology/approach: The materials were tested in compression at strain rates ranging between 10³ a[...]
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Archives of Materials Science and Engineering
EN Purpose: Influence of austenitiziation parameters (temperature and time) on grain size and mechanical properties of low alloy cast steel have been investigated. Design/methodology/approach: The grain size of former austenite was determined by Image Pro Plus software and its distribution by STATISTIC[...]
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Archives of Materials Science and Engineering
EN Purpose: The purpose of this paper is to present the results of the investigations of phase transitions of TiNiCo and Ni-rich NiTi shape memory alloys designed for medical applications. Design/methodology/approach: Temperature X-ray diffraction (TXRD), differential scanning calorimetry (DSC), electr[...]
17
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: Recognizing of corrosion mechanisms in liquid mediums can lead to obtain corrosion-proof material e. g. by applying passivation phenomenon. In this paper attention was paid to determine the corrosion resistance of Fe40Al intermetallic phase based alloy in corrosive medium of liquid NaCl. Re[...]
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Archives of Materials Science and Engineering
EN Purpose: Metal reoxidation causes a number of iron castings defects, particularly when pouring them in greensand moulds. One of them is pinholes the occurrence of which is explained by several hypotheses. One of possible causes is reoxidation processes in the foundry mould cavity. During its flowing[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The work presents the influence of artificial urine environment and surface treatment of Co-Cr-W-Ni alloy, intended for implants applied in urogenital surgery, on their corrosion resistance. The tests were carried out in three artificial urine solutions that differed in chemical composition[...]
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Archives of Materials Science and Engineering
EN Purpose: The automotive use of magnesium is currently restricted to low-temperature structural components. Rare earth additions such as Ce, Nd, La and Pr are known to improve the creep performance. The aim of the research was to determine the effect of pouring temperature on the as-cast microstructu[...]
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