Effect of PTCAP Passes on the Mechanical Properties of Copper Tubes

Document Type : Original Article

Authors

1 Mechanical Department (Production), Faculty of Industrial Education, Suez University

2 Mechanical Design & Production Engineering Department, Faculty of Engineering, Zagazig University

3 Metallurgical and Materials Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University

Abstract

Commercially pure copper samples were successfully deformed by parallel tubular channel angular pressing (PTCAP) up to different passes at room temperature. The effects of the PTCAP number of passes on the microstructure, mechanical properties, microhardness and wear resistance of the processed samples were fully investigate. The microstructure of processed samples were observed by SEM and showed notable decrease in the grain size with increase number of passes. The mechanical properties of the pure copper in each pass were studied by tensile testing and microhardness method at room temperature. In this respect, UTS, σ 0.2% and microhardness have been markedly improved from 199.03, 102.17 MPa and 67.83 HV as the annealed condition to 331.40, 293.51 MPa and 144.03 HV after the forth pass, respectively. Besides, the elongation percent were decreased while, the wear resistance improved with increased number of PTCAP passes. Ductile fracture with extensive necking zone and many big dimples occurs in annealed samples, while fine dimples were decreased with the deformation final passes of PTCAP processed samples.

Keywords

Port-Said Engineering Research Journal
Volume 21, Issue 2
September 2017
Pages 164-172

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