Abstract. The electro-superplastic effect (ESP effect) can enhance the superplastic deformation ability of alloy, and also make alloy with poor plasticity have properties. Diverse grain sizes LZ91 Mg-Li were successfully prepared through equal channel angular pressing (ECAP) process. In order to explore behavior under electric current, an field assisted uniaxial tensile test platform was design...

A discontinuously reinforced MMC containing 12 vol % Sic particles in an Al-Cu-Mg alloy (AA 2124) matrix has been diffusion bonded. Thick interlayers of different superplastic aluminium alloys (Al-Li 8090 and A1-Cu SUPRAL) were used to reduce the bonding pressure and ensure complete surface contact. Microstructural studies shown higher continuity in joints bonded with 8090 interlayer than with ...

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...

We report that defect-free Au nanowires show superplasticity on tensile deformation. Evidences from high-resolution electron microscopes indicated that the plastic deformation proceeds layer-by-layer in an atomically coherent fashion to a long distance. Furthermore, the stress-strain curve provides full interpretation of the deformation. After initial superelastic deformation, the nanowire show...

Metallic glasses are disordered materials that offer the unique ability to perform thermoplastic forming operations at low thermal budget while preserving excellent mechanical properties such as high strength, large elastic strain limits, and wear resistance owing to the metallic nature of bonding and lack of internal defects. Interest in molding micro- and nanoscale metallic glass objects is d...

Superplastic bonding was performed using electrodeposited Ni and Ni-B to apply low-temperature diffusion of carbon steel. Electrodeposited were bonded at 450℃ in air a strain rate 1 × 10−4 s−1. The shear test measured the bond strength, maximum strength 69 MPa obtained. Since obtained is comparable that by steel 0.5Tm, it possible decrease temperature 0.4Tm applying this boning process. depende...

A series of tensile testing was carried out on the ultrafine grained 5083 Al alloy, which was fabricated by equal channel angular pressing (ECAP) with different ECAP strains, at low temperature superplastic (LTS) temperature of 548K. This investigation was aimed at examining the effect of the ECAP strain inducing different microstructure in the alloy on the deformation mechanisms at LTS regime....

An Al-3%Mg-0.2%Sc alloy was processed by ECAP and HPT at different temperatures. Afterwards, samples subjected to 10 turns of HPT at 300 and 450 K, 8 passes of ECAP at 300 K and 10 passes of ECAP at 600 K were annealed for 1 hour at 523 K and their mechanical properties and microstructure were examined using microhardness measurements and EBSD analysis. In addition, tensile specimens with simil...