The paper describes the effect of laser traverse speed during hardening on hardness and micro-structure. experimental material is hot work tool steel AISI H11 with samples sized 100×100×35 mm. initial state before quenched tempered. temperature constant at 1100 °C, selected was 1, 2, 4, 6 mm/s. A numerical simulation performed in DEFORM-3D software experiment showed tendencies displacement e...

The high-temperature oxidation behaviour of chromium-molybdenum-vanadium alloyed hot-work tool steel was investigated. High-temperature investigated in two conditions: soft annealed, and quenched tempered. samples were oxidised a chamber furnace an instrument for simultaneous thermal analysis, 100 h the temperature range between 400 °C 700 °C. Metallographic analysis (optical scanning electron ...

This study investigated the hardness and wear on DIN 1.2367 hot work tool steel after applying plasma gas nitriding processes under different conditions. The effect of process temperature N2:H2 mixture ratio was examined in first group specimens, whereas impact nitrogen potential retention time second specimens. In applied to group, increase N2 significantly increased properties material. addit...

This study investigated the deformation effects of the interface between conventionally produced stainless steel X2crNi 19 11 and HIPed NiTI coating (Hot Isostatic Pressed). Near-equiatomic nickel-titanium alloy (NiTi) has many attractive material properties, such as pseudo-elasticity and shape memory effects, which result into beneficial engineering properties e.g. as cavitation resistant coat...

Boron steels are used in hot stamping process due to their good mechanical properties. During the stamping process, the dies are exposed to aggressive conditions including adhesive wear, abrasion, thermal stresses and fatigue. In the present work, QRO 90 and UNIMAX slid against 22MnB5 steel in four conditions: with and without hardening treatment and, with and without Al–10%Si coating, in order...

in this work dynamic recrystallization behavior of aisi 403 martensitic stainless steel was studied using hot compression tests over temperature range of 900 c -1200 c and strain rate range of 0.001 s-1 - 1 s-1. the obtained flow curves showed that the hot compression behavior of the alloy is controlled by dynamic recrystallization. the flow stress and strain corresponding to the critical, pe...

a low carbon al-killed ti-added steel was produced in mobarakeh steel complex in iran. mechanical properties and microstructural characterizations of steel in the as-cast, hot-rolled, cold-rolled and annealed conditions are presented. dilatometery tests were carried out to measure the finishing and annealing temperatures of steel. it was found that the addition of small amounts of ti increased ...