中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 No. 10 October 2010 |
（1. Department of Metallurgical and Materials Engineering,
National Institute of Technology, Tiruchirappalli−620 015, Tamil Nadu, India;
2. Physical Metallurgy Division, IGCAR, Kalpakkam−603 102, India）
Abstract:Al-Cu alloy was deformed through equal channel angular pressing (ECAP) by routes A, Ba, Bc and C up to 5 passes. ECAP was done using a 90° die for three different conditions, namely 1) as received, 2) solutionised at 768 K for 1 h and 3) solutionised at 768 K for 1 h + aged at 468 K for 5 h. The microstructure, microhardness and tensile strength were studied for all the three conditions and four routes. Significant improvement in hardness (HV 184 after five passes) and strength (602 MPa after three passes) was observed in solutionised and aged 2014 Al alloy deformed through route Bc. Microstructure evolution was reasonably equiaxed in route Bc with aspect ratio of 1.6. Solutionised and aged 2014 Al alloy deformed through route Bc was identified to have better microstructure and mechanical property than the other processing routes and conditions.
Key words: ECAP; processing route; 2014 aluminium alloy
