Strengthening a medium-carbon steel to 2800 MPa by tailoring nanosized precipitates and the phase ratio

The Effect of Direct Quenching on the Microstructure and Mechanical Properties of NiCrMo and Cu-Bearing High-Strength Steels

“…Conventional heat treatments of high-strength NiCrMo steels and Cu-bearing steels include austenitization, water quenching, and tempering, leading to microstructures consisting of tempered martensite/bainite and precipitates, which contribute to a significant increase in strength due to the precipitation hardening mechanism [ 6 , 7 , 8 , 9 , 10 , 11 ]. The austenitizing process is quite inefficient in terms of energy and resources.…”

Recycling‐Induced Copper Contamination of a 42CrMo4 Quench and Tempering Steel: Alterations in Transformation Behavior and Mechanical Properties

“…Current research showed for a TRIP steel with a medium carbon content of 0.56 wt% that an addition of 0.52 wt% Cu increases the ultimate tensile strength after partitioning at 400 °C for 300 s from 1100 to 1850 MPa compared to the copper free alloy. [19] Furthermore, laboratory testing showed that an increased copper and nickel content increases the cold formability. Therefore, copper might be used as a self-alloying element in low-quality steel scrap.…”

“…Current research showed for a TRIP steel with a medium carbon content of 0.56 wt% that an addition of 0.52 wt% Cu increases the ultimate tensile strength after partitioning at 400 °C for 300 s from 1100 to 1850 MPa compared to the copper free alloy. [ 19 ]…”