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Two alloys of composition Ti-48Al and Ti-48Al-2Mn-2Nb with lamellar and duplex microstructures, respectively have been crept at 700°C under stresses ranging from 250 to 430 MPa. Although the two alloys have different creep resistance, the stress exponent relating the minimum strain rates and applied stresses was the same, n = 19, for both materials. From the microstructural aspects examined in the...
The influence of thermal activation on the martensitic transformation of Cu-Al-Ni alloys containing boron and manganese has been studied by measuring the effect of heating/cooling rate during thermal cycling on the fraction transformed at a given time. The activation energies measured for the reverse and direct transformation of 70 and 140 kJ mol −1 respectively have been interpreted in terms...
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