A Study on Mechanical Properties of Friction Stir Welded and Electron Beam Welded AA2195 Sheets

Abstract:

Aluminum-Copper-Lithium alloys are used as substitute for conventional aerospace Al alloys in cryogenic tank of liquid rocket engines, aircraft wing box and satellite systems due to their high specific modulus and specific strength. For this reason they are currently under consideration for one of the potential choices for a large structure of Korea Space Launch Vehicle. In this study, friction stir welding and electron beam welding were conducted on AA2195 sheets, in butt joint configuration in order to compare the two processes and to evaluate mechanical properties. The results provide valuable information for the optimal condition of joining AA2195 sheets for a large tankage structure of the space launcher.

• Periodical: Advanced Materials Research (Volume 1105)
• Pages: 178-181
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1105.178
• Online since: May 2015
• Authors: Ye Rim Lee, Hyun Ho Jung, Jong Hoon Yoon, Joon Tae Yoo, Kyung Ju Min, Ho Sung Lee*
• Keywords: AA2195, Al-Cu-Li Alloy, Electron Beam Weld, Friction Stir Weld, Fuel Tank, Strength

References

[1] Eswara Prasad, N., Gokhale, A., and Rama Rao, P., Mechanical behaviour of aluminum-lithium alloys, Sadhana, 28(2003), pp.209-246.

DOI: 10.1007/bf02717134

[2] Prince, V. K., International Journal on Theoretical and Applied Research in Mechanical Engineering, 2(2013), pp.66-69.

[3] Mishra, R.S. and Ma, Z.Y., Friction stir welding and processing, Materials Science and Engineering: R: Reports, 2005. 50(1-2): pp.1-78.

[4] Santos, T., Vilaça, P. & Quintino, L., Welding World, 52(2013), p.30–37.