SPOT WELDING COPPER - 1% Cr ELECTRODE TIPS PRODUCED VIA EQUAL CHAN NEL ANGULAR PRESSING | Zendy

Luay Bakir Hussain | Zendy; Ali A. Aljuboury | Zendy; Mohamed A. Gebril | Zendy; Nurulakmal Moh Sharif | Zendy

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SPOT WELDING COPPER - 1% Cr ELECTRODE TIPS PRODUCED VIA EQUAL CHAN NEL ANGULAR PRESSING

Author(s) -

Luay Bakir Hussain,

Ali A. Aljuboury,

Mohamed A. Gebril,

Nurulakmal Moh Sharif

Publication year - 2017

Publication title -

asean journal on science and technology for development

Language(s) - English

Resource type - Journals

eISSN - 2224-9028

pISSN - 0217-5460

DOI - 10.29037/ajstd.163

Subject(s) - materials science , copper , pressing , electrode , spot welding , welding , metallurgy , alloy , composite material , plasticine , scanning electron microscope , chemistry , petrology , geology

A sharp 120 o equal channel angular pressing (ECAP) following route BC was applied at room temperature to refine the grain sizes of pure copper and copper- 1%Chromium alloy for spot welding electrode tips application. Initially deformation behavior was investigated with the position using colorful plasticine as work piece followed by copper alloy. It was found that the deformation at the central part of the work piece is heavily sheared than the outer part. Optical and scanning electron microscopy were used to study the progress of grain refining under the influence of rotation and number of passes during pressing. The influence of elongated fibrous nano grains on electrical conductivity and hardness were discussed. Shear test of spot welded 303 stainless steel indicated that nano structural Cu-1%Cr electrode tips used showed a superior results compared to commercial electrodes.

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