Metallurgical Investigation of HSLA Steel Subjected to Underwater Explosion | Zendy

V. Bhujanga Rao | Zendy; R. Rajendran | Zendy; A.V. Jaykumar | Zendy; K.H.B.S. Satyanarayana | Zendy

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Metallurgical Investigation of HSLA Steel Subjected to Underwater Explosion

Author(s) -

V. Bhujanga Rao,

R. Rajendran,

A.V. Jaykumar,

K.H.B.S. Satyanarayana

Publication year - 1994

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/1994/375854

Subject(s) - tearing , materials science , shearing (physics) , underwater explosion , metallurgy , explosive material , shock (circulatory) , underwater , composite material , ultimate tensile strength , residual , geology , medicine , oceanography , chemistry , organic chemistry , algorithm , computer science

The metallurgical behaviour of HSLA steel subjected to underwater explosion is of prime importance because of its structural applications in underwater vehicles. HSLA steel plates 300 × 250 × 4 mm were subjected to single and repetitive shock loadings and the point of rupture was identified. Test plates exhibited mode-I (large ductile deformation) and mode-II (tensile tearing) macroscopic failures. Electron micrographic and fractographic examination showed that the initiation of fracture was due to adiabatic shearing and the microscopic mode of failure was ductile. Plates subjected to single shock showed an increase in residual hardness and at the point of rupture it was approximately one-third higher than the initial residual hardness.

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