Aleksander Gałka 1, Krzysztof Gałka 1, Fabian Żok 1, Piotr Bazarnik 2 1 Zakład Technologii Wysokoenergetycznych „Explomet” 2 Politechnika Warszawska Selected.

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Aleksander Gałka 1, Krzysztof Gałka 1, Fabian Żok 1, Piotr Bazarnik 2 1 Zakład Technologii Wysokoenergetycznych „Explomet” 2 Politechnika Warszawska Selected aspects of manufacturing and testing of multilayer Al-Ti materials with enhanced ballistic resistance for areonautic and space constructions

Aluminum 2519/ Titanium Grade 5.01 Overview Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions Both are perfect construction materials (high endurance and low density) Combining them can give interesting results Clad materials will be tested in various aspects Microstructure Mechanical Fatigue Ballistic resistance

Test Plan.02 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Manufacture sample clad plates in following sizes (3 + 3) x 300 x 500mm (5 + 5) x 300 x 500mm ( ) x 300 x 500mm In following bonding varieties Direct bonding Ti6Al4V/2519 Bonding Ti6Al4V/2519 with 1mm Al1050 interlayer Bonding Ti6Al4V/2519 with 0,8mm TiGr2 interlayer New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Explosive Material Selection.03 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Detonation velocity measurement in various thicknesses Selection criterias: stable course of the detonation in the usable layer appropriate level of initiation sensitivity appropriate resistance to atmospheric conditions, especially satisfactory hydrophobic properties low manufacturing cost maximal usability safety Chemical composition[%] Composition name Saletrol BSaletrol CSaletrol B1Saletrol C1 Amonium Nitrate 76 79,2 Sodium chloride Mineral inert 0200 Fuel oil 440,8 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Explosive Material Selection.04 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Explosive material height H[mm] Detonation velocity D [m/s] Saletrol BSaletrol CSaletrol B1Saletrol C Detonation velocity measurement results New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Manufactured Sample Plates.05 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Ultrasonic examination of the bonding zone Mechanical endurance examination consisting of sheer, tensile and bend tests Micro hardness measurement Microstructure assessment Performed tests New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Manufactured Sample Plates.06 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Sample number SetupExplosiveH[mm]D[m/s]Vp[m/s] 32A /1050/TiGr5 Saletrol B A /1050/TiGr5 Saletrol B T3+0, /TiGr2/TiGr5 Saletrol B A /1050/TiGr5 Saletrol B A /1050/TiGr5 Saletrol B T5+0, /TiGr2/TiGr5 Saletrol B /TiGr5 Saletrol C including bonding parameters New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Heat Treatment.07 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 HT1 - Annealing in 530 deg. C for 0,5 hours and cooling in air (C signing) HT2 - Annealing in 530 deg. C for 0,5 hours and cooling in water, ageing in 150 deg. C for 10 hours, cold rolling with 15% mechanical reduction of the Al layer (signing C1) HT3 – Annealing in 530 deg. C for 0,5 hours and cooling in water HT4 - Annealing in 420 deg. C for 1 hour, cooling in air (signing C2). New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Microstructural Test Assessment.08 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Sample plate 32A with Al1050 interlayer – SEM image Al 1050 Ti Gr5 Intermetallic layer New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Microstructural Test Assessment.09 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Sample plate 32A with Al1050 interlayer – SEM (BSE) image Al1050Ti Gr5 Intermetallic layer New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Microstructural Test Assessment.10 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Intermetallic layer (2519/1050) visible in EDX spectrum Intermetallic layer 1 – 10 um New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Microstructural Test Assessment.11 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Sample plates with Al1050 interlayer Al 2519 Al 1050 Al 2519 BSE image and EDX spectrum. Copper emmision on the 2519 side on the boarder of the 2519/1050 bond. No intermetallic layer was present. New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Microstructural Test Assessment.12 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Sample 56 - direct bonding TiGr5/Al2519 Ti Gr5 Al 2519 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions TiGr5/Al2519 bond zone. No intermetallic phase found. Regular network of copper emissions found on the 2519 side.

Microhardness And Endurance Tests.13 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions Author: Michał Najwer, Opole University of Technology Sample 32A

Microhardness And Endurance Tests.13 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions Applied heat treatment does not influence hardening of titanium. Significant hardness reduction of Al1050 in each heat treatment scenario. Rise of Al2519 hardness. Best hardening achieved by thermomechanic processing due to long material cooling times/ ageing and material deformation during cold rolling and emission processes (copper) in the bond zone. Observations

Mechanical Testing.14 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Mechanical Testing.17 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions Tensile test results. Thermomechanic processing resulted in 10% rise of endurance.

Mechanical Testing.18 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Sample numberR 0 [MPa]Location of fracture 32A A761050/2519 joint 35T113TiGr2 55A T168TiGr Ram tensile test New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions

Mechanical Testing.19 Umowa nr PBS2/A5/35/2013 z dn , realizacja zadania nr 4 Energy absorption comparison (sample 55A/T) New advanced layer Al-Ti materials with enhanced ballistic resistance for aeronautic and space constructions Interlayer Al1050 Interlayer TiGr2 Al2519 Al1050 TiGr5 Al2519 Al1050 TiGr5 Al2519 TiGr2 TiGr5 Al2519 TiGr2 TiGr5 Difference in energy absorbed by the materials structure

.20 THANK YOU FOR YOUR ATTENTION ZAKŁAD TECHNOLOGII WYSOKOENERGETYCZNYCH EXPLOMET GAŁKA, SZULC SPÓŁKA JAWNA ZAKŁAD TECHNOLOGII WYSOKOENERGETYCZNYCH EXPLOMET GAŁKA, SZULC SPÓŁKA JAWNA xplomet