Analysis of raw material used for the fabrication of front and rear stub wing spars

Venkataswamy, MA and Sujata, M and Madan, M and Suresh Kumar, M and Bhaumik, SK (2006) Analysis of raw material used for the fabrication of front and rear stub wing spars. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

Microstructural study suggests that the raw material billet used for the fabrication of stub wing spars did not receive adequate hot working. The microstructure was found to have a thick network of second phase at the grain boundaries. Also, the microstructure resembles more of a cast structure than a wrought product. The pit-like indications observed during fluorescent dye penetrant test is believed to be due to falling off of the second phase from the material during machining and/or inferior corrosion resistance due to a highly inhomogeneous microstructure.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Front and rear stub wing spars; 2024 alloy; inadequate hot working; inhomogeneous microstructure
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Raghavendra R chandu
Date Deposited: 25 Jul 2011 10:19
Last Modified: 25 Jul 2011 10:19
URI: http://nal-ir.nal.res.in/id/eprint/9592

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