In the present research work, hydro-mechanical deep drawing (HMDD) process of 2024 aluminum alloy is performed experimentally and numerically for elevated temperatures. The main variables forming include fluid pressure, pre-bulge temperature. effects these parameters on thickness distribution uniformity index final product have been investigated. Using hardness test, preferred crystallographic ...

High strength transparent Y2O3 ceramics were fabricated from commercial powders using spark plasma sintering (SPS) technique by optimizing the heating rate. The rate significantly influenced microstructures and optical/mechanical properties of ceramics. Grain growth was limited accordingly with increasing ball milling process is likely to further enhance sinterability during SPS processing. den...

The static softening behavior of A5083 aluminum alloy with different initial microstructures was studied using various characterization techniques. To calculate the recrystallized fraction, in compression test, a new method based on offset yield stress and Hall–Petch relationship proposed, which is more accurate than conventional methods applicable even when microstructure complex. And relaxati...

The flow stress of Hadfield steel is attributed to lattice friction, dynamic strain aging (DSA), mechanical twinning, and forest hardening. However, it has not been clarified yet which mechanism quantitatively contributes most the work Here, an austenitic containing 1.1 wt.% C 12.5 Mn was studied, tensile tests at a rate 1 s−1 were performed neglect DSA effect. friction estimated by Hall–Petch ...

Aluminum alloys with nanocrystalline (NC) and ultrafine grain (UFG) size are of interest because of their strengths that are typically 30 pct greater than conventionally processed alloys of the same composition. In this study, UFG AA 5083 plate was prepared by quasi-isostatic (QI) forging of cryomilled powder, and the microstructure and mechanical behavior was investigated and compared with the...