Submitted on: 30 November 2009.
Revised on: 25 December 2009.
Accepted on: 17 February 2010.
___________________JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
http://reply.papertrans.cn/2/179/17870/17870-12.png
http://reply.papertrans.cn/2/179/17870/17870-13.png
http://reply.papertrans.cn/2/179/17870/17870-14.png
http://reply.papertrans.cn/2/179/17870/17870-15.png
Submitted on: 29 April 2000.
Revised on: 23 June 2000.
Accepted on: 13 July 2000.
___________________JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
http://reply.papertrans.cn/2/179/17870/17870-17.png
http://reply.papertrans.cn/2/179/17870/17870-18.png
http://reply.papertrans.cn/2/179/17870/17870-19.png
http://reply.papertrans.cn/2/179/17870/17870-20.png