Methods to Increase the Protective Effectiveness of Add-on Armour made of Perforated Ultra-High-Strength Nanobainitic Steel Plates

• Autorzy: Garbarz Bogdan , Marcisz Jarosław , Burian Wojciech , Kowalski Aleksander , Borowski Jacek , Szkudelski Szymon , Walicki Marek , Zając Kamil

Identyfikatory

DOI

10.5604/01.3001.0016.2958

Warianty tytułu

PL

Metody zwiększenia skuteczności ochronnej dodatkowego pancerza z perforowanych blach z ultra-wytrzymałej stali nanobainitycznej

• Języki publikacji: EN

Abstrakty

EN

The mechanical properties of industrially produced perforated steel plates are obtained by hardening and low-temperature tempering to produce a martensitic microstructure. Another morphological type of steel microstructure that allows for ultra-high strength and, at the same time, a level of ductility that qualifies it for use in armour is nanobainite. Research into nanobainitic steels has led to the development of plates manufacturing technology at a level that can be implemented in industrial production, and has confirmed the high potential of this material for use as additional armour in the form of perforated plates. This paper reports the results of research aimed at developing a technology for the production of perforated armour plates made of nanobainitic steel, with properties competitive with currently available perforated steel plates on the world market with the highest protective effectiveness under conditions of multi-hit firing tests with small and medium calibre ammunition. The tests were performed on 300 × 260 mm plates, with the nominal thicknesses of 8 mm, 6 mm and 4 mm, produced from industrially melted nanobainitic steel NANOS-BA®. The protective effectiveness of nanobainitic perforated plates in a system with a solid armour steel backing plate of 500 HBW hardness was tested by multi-hit firing, according to the procedures set out in the STANAG 4569 and AEP-55 vol. 1 specifications (adapted to the format of tested plates), against selected projectile types assigned to protection levels 2 and 3. Based on the analysis of the results of the firing tests and the macroscopic and microscopic examinations of the perforated plates before and after firing, the optimum perforation method was selected and the most favourable geometrical and dimensional arrangements of the perforations were determined for different plate thicknesses.

PL

Celem badań było opracowanie technologii wytwarzania płyt perforowanych ze stali nanobainitycznej o skuteczności ochronnej konkurencyjnej w stosunku do obecnie dostępnych pancernych płyt perforowanych. Płyty perforowane o wymiarach 300 × 260 mm × (4 mm, 6 mm oraz 8 mm) wytworzono ze średniostopowej stali nanobainitycznej zawierającej 0,6% masowych węgla. Wykonano badania metalograficzne za pomocą mikroskopu świetlnego i skaningowego mikroskopu elektronowego oraz pomiary mikrotwardości i twardości. Testy ostrzałem wykonano wg STANAG 4569:ed3:2014 zgodnie z procedurą dostosowaną do wymiarów badanych płyt perforowanych. Wykonanie otworów w płytach metodą obróbki skrawaniem nie zmieniło właściwości mechanicznych w warstwach materiału przylegających do otworów. Wycinanie otworów laserem spowodowało spadek ciągliwości i w rezultacie zarodkowanie pęknięć w trakcie uderzenia pocisku. Wszystkie warianty układów płyt perforowanych o grubości 6 mm z płytami litymi o grubości 6 mm 500 HBW badane ostrzałem amunicją 7,62 × 39 mm-API-BZ spełniły wymagania poziomu 2 STANAG 4569. Układy płyt perforowanych o grubości 4 mm z płytą litą o grubości 4 mm 500 HBW nie spełniły wymagań poziomu 2. W wyniku ostrzału amunicją 7,62 × 54R mm-B32-API układów płyt perforowanych o grubości 8 mm z równoległymi płytami litymi 500 HBW o grubości 6 mm w zakresie poziomu 3 STANAG 4569, uzyskano pozytywne rezultaty dla określonych wariantów. Zaproponowano zmodyfikowane wzory perforacji dla płyt nanobainitycznych do finalnej weryfikacji eksperymentalnej.

Słowa kluczowe

EN

add-on armour; perforated plates; ultra-high-strength nanobainitic steel

PL

dodatkowe opancerzenie; stalowe płyty perforowane; ultrawytrzymała stal nanobainityczna

• Wydawca: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
• Rocznik: 2023
• Tom: Vol. 14, Nr 1 (51)
• Strony: 23--60
• Opis fizyczny: Bibliogr. 34 poz., fot., rys., tab., wykr.

Twórcy

autor

Garbarz Bogdan

• Łukasiewicz Research Network - Upper Silesian Institute of Technology 12-14 Karola Miarki Str., 44-100 Gliwice, Poland

autor

Marcisz Jarosław

• Łukasiewicz Research Network - Upper Silesian Institute of Technology 12-14 Karola Miarki Str., 44-100 Gliwice, Poland

• https://orcid.org/0000-0002-0001-2197

autor

Burian Wojciech

• Łukasiewicz Research Network - Institute of Non-Ferrous Metals 5 Sowińskiego Str., 44-100 Gliwice, Poland

autor

Kowalski Aleksander

• Łukasiewicz Research Network - Institute of Non-Ferrous Metals 5 Sowińskiego Str., 44-100 Gliwice, Poland

autor

Borowski Jacek

• Łukasiewicz Research Network - Poznań Institute of Technology 6 Ewarysta Erdkowskiego Str., 61-755 Poznań, Poland

autor

Szkudelski Szymon

• Łukasiewicz Research Network - Poznań Institute of Technology 6 Ewarysta Erdkowskiego Str., 61-755 Poznań, Poland

autor

Walicki Marek

• CFT Precyzja sp. z o.o. (Ltd) 6 Polna Str., 05-152 Czosnów, Poland

autor

Zając Kamil

• CFT Precyzja sp. z o.o. (Ltd) 6 Polna Str., 05-152 Czosnów, Poland

Bibliografia

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Uwagi

1. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).

2. The research, the results of which are presented in this article, was carried out as part of Project No. 1/Ł- IMŻ/CŁ/2021 “Development of technology and production of perforated armour plates from ultra-high-strength nanobainitic steel” funded by a grant from the Łukasiewicz Centre (Poland).