Experiments On Delayed Failure During Galvanizing Of Flame-Cut Structural Steels

Elboujdaini, M., Tyson, W. R. and Goodwin, F. (2004). Experiments On Delayed Failure During Galvanizing Of Flame-Cut Structural Steels. In: Atrens, A., Boland, J. N., Clegg, R. and Griffiths, J. R., Structural Integrity and Fracture International Conference (SIF'04), Brisbane, Australia, (103-109). 26-29 September 2004.

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Author Elboujdaini, M.
Tyson, W. R.
Goodwin, F.
Title of paper Experiments On Delayed Failure During Galvanizing Of Flame-Cut Structural Steels
Conference name Structural Integrity and Fracture International Conference (SIF'04)
Conference location Brisbane, Australia
Conference dates 26-29 September 2004
Publication Year 2004
Sub-type Fully published paper
Editor Atrens, A.
Boland, J. N.
Clegg, R.
Griffiths, J. R.
Start page 103
End page 109
Abstract/Summary Cracks have occasionally been found after hot-dip galvanizing of flame-cut structural beams. A project has been completed at CANMET to find the causes of this problem. Experiments have been designed to measure the time-to-failure of notched samples under near-constant load. Cracking during galvanizing is caused by liquid-metal embrittlement, and occurs for critical combinations of stress and susceptible material. Sources of stress are residual stresses including those from flame cutting, and thermal stresses from thermal gradients during hot dipping. Material susceptibility is related primarily to surface hardness, and correlates well with micro-hardness measured at 100 micrometres depth. Remedial measures to eliminate cracking require either reduction of the hardness below a critical level (270 Vickers), or reduction of residual and thermal stresses.
Subjects 290801 Structural Engineering
Keyword hot dipping
galvanizing
cracks
stress
structural beams
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Thu, 16 Dec 2004, 10:00:00 EST