Structure and Mechanical Properties of the 18Ni300 Maraging Steel Produced by Spark Plasma Sintering

In this work, a new approach for compaction of the gas-atomized 18Ni300 maraging steel at two different temperatures 1050 °C and 1150 using progressive SPS technology is studied. Moreover, influence heat treatments combining solution annealing aging (SAT) simply treatment (AT) on microstructure mechanical properties investigated. It found that samples compacted had higher porosity compared to almost non-porous material produced °C. addition, difference 100 temperature successfully reduces from 0.86% down 0.08%. Additionally, we discovered temperature, amount retained γ-Fe which positively affects ductility samples. The subsequential results in precipitation strengthening via Ni3Mo precipitates. Microhardness SPS1050 SPS1150 increase 303 ± 13 HV0.1 360 5 563 31 606 17 HV0.1, respectively. sample shows highest ultimate tensile strengths reaching up 1940 6 MPa, while also showing 4% ductility.