High Performance Ultra-Lightweight Metals

摘要

LDC (Low Density Core) AlBeMet - In this quarter, Brush Wellman (BWI) and Boeing were scaling up the LDC process in order to produce 20 billets/ cans of LDC AlBeMet 162 for the Subscale Structural Porous Al-Be Production task (1. 2.3.3). The HIP can dimensions increased from 0.75 x 1.5 x 3 inch3 to 0.75 x 3 x 4 inch3, a 266 % increase in volume. With this size, external support is not needed to keep the can from bulging when 3 atm (absolute) of Ar was charged into the can. Grade 1100 aluminum was used for the HIP can to minimize distortion during HIP'ing. The uniform compaction is expected to improve pore distribution and improve the ability to roll. These twenty cans will have 3 HIP'ing variables as summarized in Table I. Our effort is focused on one atmosphere of argon gas charging for the sake of simplifying production process. Usually, large HIP cans will require external support to prevent the can from bulging if the backfill pressure is greater than 1 atmosphere. Because of the can size and HIP'ing pressure, these cans will be HIP'ed at IMT Columbus (Ohio) in two runs. Appropriate shipping containers for the Be containing 3 atm of Ar gas are being devised.