Abstract The present paper focuses on evaluating the bonding strength interfaces between contact materials such as AISI 304L and Ti-6Al-4V via. friction welding (FW). Experimental tests are performed by considering process parameters time, rotational speed pressure, mechanical properties were evaluated. of 1800, 1600, 2100, 2300 2500 rpm considered in study. response surface methodology (RSM) i...

Microstructures from deep ice cores reflect the dynamic conditions of the drill location as well as the thermodynamic history of the drill site and catchment area in great detail. Ice core parameters (crystal lattice-preferred orientation (LPO), grain size, grain shape), mesostructures (visual stratigraphy) as well as borehole deformation were measured in a deep ice core drilled at Kohnen Stati...

Abstract The AE44-2 magnesium alloy was fabricated via die-casting under high vacuum (denoted as HVDC-AE44-2 alloy). microstructures and mechanical properties of the aged alloys were investigated. It found that age strengthening can be achieved in alloys.The hardness, yield strengths (YS) ultimate tensile (UTS) after aging at 200 °C for 12 h (T5) increased by 8.8 HV, 30.5 MPa 22.6 MPa, respecti...

Abstract. Grain boundary sliding plays a key role on the high temperature deformation of fine grained materials. This mechanism is related to strain rate sensitivity approximately 0.5 and usually gives rise superplastic elongations. The controlling equation for grain has shown good agreement with experimental data multiple materials, different sizes tested at rates. However, predictive ability ...

The present study has expounded the effect of high temperatures on tensile deformation AZ31 magnesium alloy processed through a single-pass friction stir processing (FSP). major operation parameters, namely rotation speed and traverse FSP tool, were varied which led to extensive dynamic recrystallization (DRX) in zone (SZ) engendering maximum grain refinement about 63% as compared base metal. l...

The mechanical response of Polyethylene Terephthalate (PET) in elongation is strongly dependent on temperature, strain and strain rate. Near the glass transition temperature Tg, the stress-strain curve presents a strain softening effect vs strain rate but a strain hardening effect vs strain under conditions of large deformations. The main goal of this work is to propose a viscoelastic model to ...

Abstract. The presentation will illustrate the creation and production ramp-up of Titanium Hot Forming Superplastic Technology in a French aeronautical supplier from Industrialization to A320NEO full-rate production. With deformation elongations well beyond classical « cold » sheet metal forming capabilities (especially with high-strength titanium alloys such as Ti64 refractory Ti6242), were ke...

Combining conductive fillers like carbon black with elastomers allows the development of soft elastomer strain sensors that can reach very large elongations, an important requirement for many robotic applications. However, when filler is introduced in polymer, significant stiffening occurs, affecting mechanical properties, e.g. Young’s Modulus, structure. In this attempt, single piezoresistive ...

At present, 3D printing is experiencing a great boom. The demand for new materials also related to its expansion. This paper deals with manufacturing innovative polymer composite filaments suitable the Fused Filament Fabrication method in printing. As filler, common and uncostly glass beads were used mixed biocompatible biodegradable poly (ε-caprolactone), as matrix. material was characterized ...

In the current work, high density polyethylene (HDPE) composites were fabricated via Friction Stir Processing (FSP). A two-phase Fe-Fe3O4 powder was used as reinforcing agents. The extremely low cost obtained from shot-blasting of as-forged carbon steel components. X-ray diffraction (XRD) to phase analysis and evaluation purity as-received powder. size distribution determined by Laser Particle ...