Submitted on: 11 March 2000.
Revised on: 27 June 2000.
Accepted on: 25 August 2000.
___________________JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Submitted on: 05 February 2010.
Revised on: 17 March 2010.
Accepted on: 17 April 2010.
___________________JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
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