a nano/ultra-fine grain al-0.2wt% zr alloy was produced by accumulated roll bonding (arb) processafter 10 cycles. the fraction of high angle grain boundaries increased from 8% to 65.4% during 10passes during arb process. this alloy was subjected to tensile test at different temperatures (523,573and 623 k) and strain rates (0.1 and 0.01 s-1). the optimum condition of temperature and strain rate ...

Superplastic Pb-Sn alloys were produced via tube high-pressure shearing ( t -HPS), in a single step starting from elemental solid bulks. A Pb-40 wt% Sn alloy showed an exceptional superplastic elongation as high ∼1870% at strain rate of 1.0 × 10 −3 s −1 room temperature, thereby elevating the optimum for maximum under these conditions by more than one order magnitude over conventional cast allo...