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Applications Of Mechanical Spectroscopy To Industrial Materials

Schaller A.

Archives of Metallurgy and Materials

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2015

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Vol. 60, iss. 2A

1085--1089

EN

The paper is a review of original results, which were obtained by mechanical spectroscopy in the development of industrial materials, such as grey cast iron (damping capacity), aluminum alloys (recrystallization), nickel alloys (grain boundary embrittlement) and gold alloys (hardening mechanisms). Moreover it is shown that the study of grain boundary sliding at high temperature has led to the development of new grades of zirconia exhibiting a high toughness and a good resistance to creep. It is also recalled that mechanical spectroscopy has been a mandatory technique in the development of light metallic materials, which exhibit simultaneously good mechanical properties and a high damping capacity, and are consequently well suited to transport means.

PL

Artykuł prezentuje przegląd oryginalnych wyników, które zostały uzyskane za pomocą spektroskopii mechanicznej podczas rozwoju materiałów przemysłowych, takich jak żeliwo szare (zdolność tłumienia), stopów aluminium (rekrystalizacja), stopów niklu (kruchość granic ziaren), i stopów złota (mechanizmy umocnienia). Ponadto pokazano, że badania poślizgu granicy ziaren w wysokiej temperaturze umożliwiły rozwój nowych gatunków tlenku cyrkonu wykazujących wysoką wytrzymałość i dobrą odporność na pełzanie. Przypomniano także, że spektroskopia mechaniczna jest obowiązkową techniką stosowaną w rozwoju lekkich materiałów metalowych, które wykazują jednocześnie dobre właściwości mechaniczne oraz wysoką zdolność tłumienia, a tym samym są odpowiednie do zastosowania w środkach transportu.

2

Structure and physical properties of Fe-based metallic glasses with Ni and Co addition

Lesz S., Nowosielski R.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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Vol. 48, nr 2

145--152

EN

Purpose: The main aim of the paper was investigation of structure and physical properties of Fe-based metallic glasses with Ni and Co addition. Design/methodology/approach: The structure was characterized by X-ray diffraction (XRD) method, transmission electron microscope (TEM), scanning electron microscope (SEM). The measurement of physical properties (magnetic and mechanical) were made. The magnetic properties contained initial magnetic permeability μi, coercive force Hc and magnetic after-effects Δμ/μ measurements were determined by the Maxwell-Wien bridge, coercivemeter and with the use of automatic device for measurements magnetic permeability, respectively. Microhardness tests were performed on Vickers microhardness tester. Findings: The XRD and TEM investigations revealed that the studied ribbons were amorphous. The SEM images showed that studied fractures morphology of ribbons is changing from smooth fracture inside with narrow dense veins pattern on surface having contact with the copper roller during casting to fine (shell) chevron pattern on surface freely solidified. The changing of chosen soft magnetic and mechanical properties obtained for samples with different thickness is a result of the non-homogenous amorphous structure of tested metallic glasses. Practical implications: The successful preparation of the Fe-based metallic glasses with Ni and Co addition from industrial raw materials will benefit cost-effective development of functional ferromagnetic materials and may be utilized in construction of magnetic cores such as common mode choke coils and noise filters. Originality/value: In this work, an attempt has been made to prepare the Fe-based metallic glasses more economically by means of replacement of high purity materials with industrial materials (ferroalloys).

3

Masowe i mikroskopowe właściwości sypkich materiałów roślinnych i przemysłowych. Cz. 1, Porównanie właściwości mechanicznych

Stasiak M., Opaliński I., Molenda M.

Przemysł Chemiczny

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2008

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T. 87, nr 2

199-202