Wyniki wyszukiwania - BazTech

1

The development of materials science and engineering in Poland against the background of the development of universities of technology in Europe and the USA

Kraszewska M.

Archives of Materials Science and Engineering

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2018

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Vol. 89, nr 1

27--40

EN

Purpose: The purpose of this paper is to present the development of materials science and engineering in Poland against the background of the development of the universities of technology in Europe and the USA. The research was conducted in the field of literary studies dealing, amongst other things, with the history and development of the universities. Design/methodology/approach: In order to perform the research, the author has used historical, comparative and cultural methods which are characteristic for the humanities. Findings: Materials Science and Engineering (MSE) was created in the USA in the 1950s and the 1960s. Over the next two decades, it became popular in many other countries, including European ones such as Poland. Its development in Poland, in spite of the last decision of the authorities of particular universities of technology, will be continued in the following years because it is one of three key disciplines, together with information technology and biotechnology, which is treated in the world as key to the future prosperity of developed nations and as a major driving force for global economic growth. Originality/value: An overview of the available literature related to the topic allows one to conclude that the previous studies have not analysed the development of materials science and engineering in Poland against the background of the development of the universities of technology in Europe and the USA.

2

Kształtowanie struktury i właściwości wolframowych stopów ciężkich o przeznaczeniu specjalnym

Kaczorowski M., Skoczylas P.

Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa

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2015

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Vol. 6, Nr 1 (19)

27-40

PL

W artykule zamieszczono wyniki badań doświadczalnych, których celem było opracowanie metody wytwarzania wolframowych stopów ciężkich (WSC), przeznaczonych na rdzenie pocisków podkalibrowych stabilizowanych brzechwowo typu APFSDS (ang. Armor Piercing Fin Stabilized Discarding Sabot). Stwierdzono, że najbardziej skuteczną metodą zwiększania właściwości wytrzymałościowych WSC jest obróbka plastyczna na zimno, prowadząca do umocnienia odkształceniowego zarówno ziaren wolframu, jak i osnowy na bazie Ni. Obróbka ta powinna być jednak prowadzona w sposób kontrolowany, ponieważ nadmierny zgniot, powodujący bardzo duże zwiększenie wytrzymałości na rozciąganie i twardości, dokonuje się kosztem znaczącego zmniejszenia wydłużenia, w szczególności odporności na obciążenia udarowe. Obróbka cieplna obejmująca wyżarzanie pod obniżonym ciśnieniem oraz szybkie chłodzenie (przesycanie) połączone z późniejszym wyżarzaniem w temperaturze w zakresie 500-800°C umożliwia dalsze zwiększenie wytrzymałości WSC, lecz efekt obróbki cieplnej jest znacznie mniej efektywny niż obróbki plastycznej na zimno.

EN

The paper presents the results of experimental studies aimed at elaboration of the manufacturing technology of tungsten heavy alloys (WSC) with high mechanical properties, dedicated for kinetic energy penetrators of armour piercing fin stabilized discarding sabot (APFSDS) ammunition. Especially, the results of mechanical properties’ investigations and structure observations of the materials strengthened by cold work and heat treatment involving supersaturation and aging are described. It was concluded that the best method of WSC strengthening is cold working, involving strain hardening both tungsten grain and Ni-based matrix. The cold working should be carried out under control because it excesses deformation causing very high strength and hardness increase is accomplished by the cost of substantial ductility, especially impact strength decrease. The solution heat treatment in vacuum furnace followed by water quenching and then isothermal aging at temperature range of 500-800°C enable further strength and hardness increase of WSC but its effectiveness is substantially less than cold work strengthening.

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Report on the main areas of the materials science and surface engineering own research

Dobrzański L. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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Vol. 49, nr 2

514--549

EN

Purpose: The purpose of the paper is to present the representative examples for the own scientific research in the area of the forming of the structure and properties of engineering materials including biomaterials, their properties testing and microstructure characterisation and modelling, simulation and prediction of the properties and structure of these materials after selected materials processing technologies. Design/methodology/approach: The main areas of the scientific interests reported in this paper on the basis of the own original research include forming of structure and properties of engineering materials including biomaterials using advanced synthesis and materials processing technologies and nanotechnologies, engineering materials including biomaterials properties testing and microstructure characterisation using very advanced contemporary research methodologies including electron microscopy, modelling, simulation and prediction of properties and structure of engineering materials including biomaterials using advanced methods of computational materials science including artificial intelligence methods. Findings: A general character of the paper concerning many aspects of material science research enabled a detailed description of research methodology and details concerning research results. Detailed information is included in many detailed cited works. Practical implications: Presented research results can be used in practice. Originality/value: The paper presents numerous research results which Has been made during last years generalising the achievements of the research team directed by the author.

4

Conceptual study on a new generation of the high-innovative advanced porous and composite nanostructural functional materials with nanofibers

Dobrzański L. A., Pawlyta M., Hudecki A.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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Vol. 49, nr 2

550--565

EN

Purpose: The purpose of the paper is to analyse theoretically the possibilities of the development of a new generation of the high-innovative advanced porous and composite nanostructural functional materials with nanofibers and to study into the material science grounds of synthesis and/or production and formulation of such materials’ structure and properties and to characterise and model their structure and properties depending on the compositional, phase and chemical composition and the applied synthesis and/or production and/or processing processes, without the attitude towards any direct practical application or use, but with confirming the highly probable future application areas, using the unexpected effects of formulating such materials’ functional properties. Design/methodology/approach: In general, the study is of priority cognitive importance as theoretical considerations and the author’s initial analyses related to technology foresight concerning this group of issues as well as sporadical results of research provided in the literature, usually in its incipient phase, indicating a great need to intensify scientific research, to develop the new groups of materials with quite unexpected predictable effects, resulting from the use of nanofibers for fabricating super advanced composite and porous materials. Findings: The description of the state of the art for the subject of the study has been limited to the issues initially selected with an analysis with the method of weighted scores. Practical implications: The outcoming materials may have direct influence on the development of electronics and photonics, medicine and pharmacy, environmental protection, automotive industry, space industry, machine industry, textile and clothing industry, cosmetic industry, agriculture and food sector. Originality/value: The value of this paper lies in the fact that it proposes a new generation of the high-innovative advanced porous and composite nanostructural functional materials with nanofibers.

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Metaloznawstwo wczoraj i dziś

Maciejny A.

Hutnik, Wiadomości Hutnicze

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2004

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Vol. 71, nr 12

576-583

PL

W pracy przedstawiono kształtowanie się wiedzy metaloznawczej do metalografii do metaloznawstwa oraz nauki o materiałach i inżynierii materiałowej. Omówiono znaczenie dla tego procesu kolejnych odkryć naukowych, rozwoju metod badawczych oraz postępu technicznego i cywilizacyjnego. Podkreślono rolę badań żelaza i jego stopów w rozwoju metaloznawstwa. Przedstawiono problematykę współczesnego metaloznawstwa jako trzonu nauki o materiałach i inżynierii materiałowej.

EN

The work presents formation of physical metallurgy knowledge commencing from the metallography to metal and materials science and engineering. Importance of the successive science discoveries, development of the research methods as well as technological and civilization progress to this process has been discussed. A vital role of iron and ferroalloys in development of physical metallurgy has been emphasized. Problems of the modern physical metallurgy as an essential constiuent of the materials science and engineering have been presented.