METHOD FOR PROCESSING ALUMINUM BRONZE IN ORDER TO OBTAIN SUPERPLASTICITY

摘要

PURPOSE:To prepare Al-bronze having superplasticity and reduced in deformation resistance, by applying warm procesing and/or cold processing to Al-bronze containing copper, iron, Al, Mn and Ni in a specific ratio in a specific draft prior to hot processing. CONSTITUTION:Warm processing in a draft of 30% or more, cold processing in a draft of 10% or more or warm processing and cold processing under a condition satisfying at least one of both drafts is applied to Al-bronze containing 77- 85% copper, 1.3-6.0% iron, 8.0-11.0% Al, 0.5-2.0% Mn and 3.5-7.0% Ni prior to hot processing. By this method, hot deformation capacity reaches several times that compared with conventional one and deformation resistance also becomes remarkably small and the production cost of a processed product can be reduced.