Hot compression behaviors and microstructural evolution of Be-38wt.%6061Al

Abstract The compressive deformation performance of Be-38wt.%6061Al coordination was investigated in the temperature range from 250 to 550 °C and strain rate from 0.01 to 10 s-1. The soften mechanism showed in the stress-strain curve is dynamic recovery (DRV). Arrhenius type constitutive equation is established based. Dispersion strengthening mechanism, caused by oxidation and powder metallurgy processing, is derived from calculated material constants. The typical microstructure instability mechanisms under the deforming craft above are interfacial debonding and 45° shear cracking. The optimum deformation parameter is 450℃ and 0.01 s-1, which contributes to the well-distribution of oxides and the alloy agglomeration, and coordinates the microstructure of each part to more consistency.