A new P/M route based hot powder pre-form forging process has been evolved to develop high density brake materials for heavy duty applications. Number of iron based MMC’s so developed offer better characteristics for braking applications in comparison to the materials developed through conventional P/M route based on high pressure compaction and pressure sintering. The process so developed in t...

This paper aims to improve the mechanical properties and fatigue life of AISI/SAE 4140 alloy steel connecting rods (CRs). Conventional CRs are typically manufactured through open die forging/hammering, blocking, hot forging processes. In present work, a modification process route has been proposed such that forging/hammering was completely replaced with multistep asymmetrical reducer rolling te...

Two oxide precipitation hardened (OPH) Fe-Al-O-based steels were prepared by mechanical alloying. In addition to the variant using yttria nano-precipitates improve properties, a only alumina precipitates for strengthening was also prepared. Therefore, more economically acceptable of these developed. Hot consolidation is significant production step achieving required properties. performed either...

Structurally porous metal sandwich panels consisting of dense face sheets and porous cores of controlled relative density can be manufactured by trapping inert gas during hot isostatic pressing and modifying its distribution via subsequent thermomechanical forming. A plane-strain solution for analyzing the open-die forging of such a plastically compressible sandwich panel is developed. An effec...

Article history: Received 12 July 2014 Accepted 11 September 2014 Available online 20 September 2014 A single hit, hot isothermal plane strain compression (PSC) test was used to understand the microstructural evolution during large strain deformation of aluminium–copper–lithium alloy AA 2195. Hot isothermal PSC tests were conducted in the temperature range of 300–450 C and at strain rates of 0....

Hybrid manufacturing (HM) Ti-6Al-4V components combining the advantages of forging and additive were achieved. The bonding zone HMed component joins substrate manufactured its α′-α/α′/αm-α/β heterogeneous microstructure was attributed to distinguishing cooling rate pseudo-isothermal annealing temperature. phase transformation mechanisms clarified with a numerical simulation model for thermal an...

Wrought nickel-based Alloy 825 is widely used in the oil and gas industries, attributed to its high strength at temperatures up 540 °C. However, differences mechanical properties arise finished components due variations both grain size dislocation density. Numerous experimental studies of strengthening mechanisms have been reported many models developed predict under thermomechanical processing...