A Novel near Net-Shape Technique for P/M Parts with Large H/D Ratio

J Mater Sci Technol ›› 2002, Vol. 18 ›› Issue (05): 410-412.

• Research Articles • Previous Articles Next Articles

A Novel near Net-Shape Technique for P/M Parts with Large H/D Ratio

Yong LIU, Baiyun HUANG, Kechao ZHOU, Hongwu OUYANG, Yuehui HE

State Key Lab for P/M, Central South University, Changsha 410083, China

Received:2001-05-25 Revised:2001-07-20 Online:2002-09-28 Published:2009-10-10
Contact: Yong LIU

Abstract

Abstract: In order to overcome the shortcomings of conventional hot pressing, a novel near net-shape technique, called radial hot pressing, for P/M parts with large height-to-diameter (H/D) ratio was introduced. Effects of processing parameters on the microstructures and density of P/M TiAl base alloy valves were studied. Results show that the radial hot pressing is an effective technique for manufacturing valves with a H/D ratio of about 10:1, and the perfect joint interface between the Mo sheet and the parts is helpful for subsequent HIPing.

Key words: Near net-shape technique, Powder metallurgy, Hot pressing

Yong LIU, Baiyun HUANG, Kechao ZHOU, Hongwu OUYANG, Yuehui HE. A Novel near Net-Shape Technique for P/M Parts with Large H/D Ratio[J]. J Mater Sci Technol, 2002, 18(05): 410-412.

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A Novel near Net-Shape Technique for P/M Parts with Large H/D Ratio

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