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연속적 강소성 가공을 위한 스프링 가압형 ECAP 설계
진영관(Y. G. Jin),전병철(B. C. Jeon),임용택(Y. T. Im) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
Severe plastic deformation processing by equal channel angular pressing (ECAP) has attracted noticeable attention because it is an effective technique to produce the ultrafine-grained materials with enhanced mechanical properties. In the present study, split dies combined with the principle of spring-loaded preform process were newly proposed to provide a solution for the inefficiency of ECAP process. The designed and constructed spring-loaded ECAP set-up was used to make the continuous process feasible. Experiments for a single pass of ECAP were carried out to process aluminum alloy AA6061 by using the multi-stage former at room temperature. Vickers microhardness test was applied to investigate strength increase in the specimen deformed by ECAP. The spring-loaded ECAP proposed might be beneficial in commercializing a continuous application of ECAP to produce a high strength part in industry.