• VIJAY CHANDRA DAS
• KRISHNA MOHAN SHARMA
• SHIVAM JADON
• MANNA
• DASHRATH. S. M

In the present work, we have reported the microstructures and mechanical properties of bulk Cu-4.5 Al wt%. alloy subjected to cryorolling (CR) under liquid nitrogen temperature (LN2). Samples were plastically deformed to obtain different reduction in area (RA), i.e. 75%. The mechanical properties of cryorolled samples were investigated by tensile testing and hardness measurement. Cryorolled samples with 75% RA shows maximum tensile yield strength (600 MPa) with an elongation only ~2.1% as compared to its coarse grain. The increase in mechanical strength is due to the refinement of grain size by the combined effect of suppression of dynamic recovery and recrystallization, and accumulation of high density dislocations during cryorolling. Brittle type of fracture was identified for 75% RA cryorolled samples from fractography analysis, whereas presence of dimples in the fractured surface of it s coarse grain specimens indicated a ductile failure.

Mechanical properties of ultrafine grained bulk copper alloy developed by cryorolling

"Mechanical properties of ultrafine grained bulk copper alloy developed by cryorolling", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.404-409, May-2019, Available :http://www.jetir.org/papers/JETIRBZ06063.pdf

"Mechanical properties of ultrafine grained bulk copper alloy developed by cryorolling", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp404-409, May-2019, Available at : http://www.jetir.org/papers/JETIRBZ06063.pdf