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7039 ALÜMİNYUM ALAŞIMININ KAYNAK ÖNCESİ VE SONRASI MEKANİK VE BALİSTİK ÖZELLİKLERİNİN ARAŞTIRILMASI

INVESTIGATION OF THE BALLISTIC AND MECHANICAL PROPERTIES OF THE PRE AND POST-WELDED 7039 ALUMINUM ALLOY

Journal Name:

  • Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2011

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, the special weld grooves was created on 7039 Al-Zn armor plate with different thickness of 12.7 and 38 mm and they were welded with MIG welding technique via multiple pass. After that, the ballistic and mechanical properties of these plates were examined. V50 ballistic limit values of the base metal, the heat affected zone and the weld metal of the welded plate of 38 mm thickness were determined by shooting with laboratory bullets of 12.7 mm. 12.7 mm thickness welded plates were used for determining the mechanical properties. It is observed that the ballistic and mechanical properties of the welded samples decrease. Moreover the highest V50 ballistic limit value was obtained from the base metal whereas the lowest V50 ballistic limit value was obtained from the welded metal.
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Abstract (Original Language): 
Bu çalışmada, kalınlıkları farklı (12,7 ve 38 mm) 7039 Al-Zn zırh levhalarına özel kaynak ağzı açılarak MIG kaynak yöntemiyle çoklu paso kaynak yapıldı. Bu kaynaklı levhaların balistik ve mekanik özellikleri araştırıldı. 38 mm kalınlığındaki kaynaklı levhanın ana metal, geçiş bölgesi ve kaynak metali kısımlarına 12,7 mm’lik zırh delici mermilerle atış yapılarak bu bölgelerin V50 balistik sınır değerleri tespit edildi. Mekanik özelliklerin belirlenmesinde ise 12.7 mm kalınlığındaki kaynaklı levhalar kullanıldı. Bu deneyler sonucunda kaynaklı numunelerin mekanik ve balistik özelliklerinin azaldığı görülmüştür. Ayrıca en yüksek V50 balistik sınır değerini ana metal, en düşük V50 balistik sınır değerini ise kaynak metalinin gösterdiği tespit edilmiştir.
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REFERENCES

References: 

1. Faulkner, J.F., Jonson, E.W., Military vehicles and equipment, American Society for Design Application, Vol:II, Chapter: 19, 460, 1967.
2. Madhusudhan Reddy G., Mohandas T., Papukutty K.K., Effect of welding process on the ballistic performance of high-strength low-alloy steel weldments, J. of Mater. Proces. Tech., 74, 27–35, 1998.
3. Madhusudhan Reddy G, Mohandas T. Ballistic performance of high strength low alloy steel weldments. J. of Mater. Proces. Tech., 57, 23-30,1996.
4. Mohandas T, Madhusudhan Reddy G, Satish Kumar B. Heat affected zone softening in high strength low alloy steels. J. of Mater. Proces. Tech., 88, 284-294, 1999.
5. Madhusudhan Reddy G., Mohandas T., Papukutty K.K., Enhancement of ballistic capabilities of soft welds through hardfacing, Int. J. of Impact Eng. 22, 775-791,1999.
6. Demir T., Übeyli M., Yıldırım R. O., Investigation on the ballistic impact behavior of various alloys against 7,62 mm armor piercing projectile, Mater. and Des. 29, 2009–2016, 2008.
7. Übeyli M, Yıldırım O, Ögel B. Investigation on the ballistic behavior of Al2O3/Al2024 laminated composites, J. of Mater. Proces. Tech.,196:356–64, 2008.
8. Özşahin E. ve Tolun S., Influence of surface coating on ballistic performance of aluminum plates subjected to high velocity impact loads, Materials and Design, 31: 1276–1283 (2010).
9. Jena P. K., Mishra B., Kumar K. S., T. Bhat B., An experimental study on the ballistic impact behavior of some metallic armour materials against 7,62 mm deformable projectile, Materials and Design 31:3308–3316 (2010).
10. Sadanandan S., and Hetherington J.G., Characterisation of ceramic/steel and ceramic/aluminium armors subjected to oblique impact Int. J. İmpact Enrgng. 19: 811-819 (1997).
11. Aluminum alloy 7039, MIL-DTL-46063 H, ARMOR PLATE, 14 September 1998.
12. American welding society, ANSI/ AWS A5. 10-92 An American national standart, Spesification for bare aluminum and aluminum alloy welding electrodes and rods.
13. Oğuz B, Demir dışı metallerin kaynağı, OERLIKON Yayını, 1-9,1990.
14. Wu Y.E., Wang Y.T., Enhanced SCC resistance of AA7005 welds with appropriate filler metal and post-welding heat treatment Department of Mechanical Engineering, National Theoretical and Applied Fracture Mechanics 54: 19–26, 2010.
15. Edwards MR, Mathewson A. The ballistic properties of tool steel as a potential improvised armour plate. Int. J. Impact Eng., 19(3):297–309, 1997.
16. Maweja K, Stumpf W. Fracture and ballistic-induced phase transformation in tempered martensitic low-carbon armour steels. Mater. Sci. Eng. A;432:158–69, 2006.
17. Maweja K, Stumpf W. The design of advanced performance high strength lowcarbon martensitic armour steels, Part 1. Mechanical property considerations. Mater. Sci. Eng. A;485:140–53, 2008.
18. Maweja K, Stumpf W. The design of advanced performance high strength low carbon martensitic armour steels, Microstructural considerations. Mater. Sci. Eng. A; 480:160–6, 2008.
19. Orgorkiewicz RM. Armor for combat vehicles. New armor materials. Mach. Des. 1969:36–42.

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