The effect of secondary steelmaking processes such as desulphurization, removal of inclusions and vacuum degassing followed by hot forging and hardening heat treatment on the microstructure and mechanical properties of a hot-work w500 tool steel have been studied in details. In order to follow the progress of secondary steel making, the content of impurity elements such as S, P, O, H and N were...

Internal die cooling during forging can reduce thermal loads, counteracting surface softening, plastic deformation and abrasive wear. Additive manufacturing has great potential for producing complex geometries of the internal channels. In this study, hybrid dies were developed combining conventional processes laser powder bed fusion (L-PBF) achieving conformal A characterisation used hot-work t...

Efficient control techniques must be preceded by well-designed processes. A generally accepted definition of a well-designed process is one that is Pareto optimal, i.e., no design objective can be improved without degrading at least one other design objective. Indeed, optimal design enables effective trade-off of competing design objectives, including controllability and robustness goals. The m...

Abstract Hot forging processes and process chains provide components, which meet highest demands due to mechanical properties. A wide range of applications in different industries like oil gas, automotive aviation are based on such processes. As those very productive unfavorable conditions unnecessary reject or rework a strong issues still not solved for industrial scale production. One key cha...

This paper focuses on the fabrication of as-forged Ti46.5Al2Cr1.8Nb-(W, B) alloy via pulse current auxiliary isothermal forging (PCIF). The starting material composed of near gamma (NG) microstructure was fabricated by adopting pre-alloyed powders via hot pressing sintering (HPS) at 1300 °C. Isothermal compression tests were conducted at a strain rate range of 0.001-0.1 s-1 and a temperature ra...