Failure analysis of K12 buckle latch

Suresh Kumar, M and Madan, M and Venkataswamy, MA and Sujata, M and Bhaumik, SK (2006) Failure analysis of K12 buckle latch. Project Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

Fractographic features revealed that the buckle latch in question has failed in a ductile mode and there were no evidences of preexisting crack and/or embrittlement of steel. The microstructure and hardness were as per the specification. However, metallographic study disclosed presence of large quantities of iron oxide in the failed latch. It is believed that these nonmetallic inclusions were responsible for low impact toughness of the material resulting in failure of the component during the dynamic test. Analysis suggests that the iron oxide was exogenous and was included in the material due to entrapment of scale in the material during hot working operations.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Buckle latch;Impact failure;Non-metallic inclusions;Oxide entrapment
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: Ms. Alphones Mary
Date Deposited: 29 Jul 2011 11:05
Last Modified: 29 Jul 2011 11:05
URI: http://nal-ir.nal.res.in/id/eprint/9709

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