Failure analysis of IC engine valve

Madan, M and Sujata, M and Raghavendra, K and Gore, P and Bhaumik, SK (2011) Failure analysis of IC engine valve. Project Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

Analysis of the fractured sample showed that the cracks in the valve were generated due to hydrogen embrittlement (HE). The valve steel picked up hydrogen during chrome plating and/or chemical etching process. The high hardness of the valve in the groove region made it more susceptible for HE cracking. The valve provided for comparative study also showed presence of a crack in the induction hardened zone and adjacent to the groove. A detailed analysis of the failure is presented in this report and a few recommendations suggested.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: IC engine valve;Chrome plating;Intergranular cracking; Hydrogen embrittlement
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Other, Materials Science Division
Depositing User: Ms. Alphones Mary
Date Deposited: 12 Jul 2011 10:33
Last Modified: 12 Jul 2011 10:33
URI: http://nal-ir.nal.res.in/id/eprint/9340

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