Features of hardening of metal deposited by flux-cored wire 10G7M3S2AFTU as a result of aging

摘要

The features of aging hardening of 10G7M3S2AFTU steel deposited by flux-cored wire are investigated. It is shown that the basis of the metal matrix after aging is ferrite. It was established that aging at a temperature of 550°C for 6 hours provides the highest degree of hardening of ferritic steel 10G7M3S2AFTU. In this case, the hardness of the steel reaches 42 HRC. It was found that the hardening mechanism of steel as a result of aging is due to nitride-carbide-intermetallic compounds, for the most part, Ti_2CN, V_(1.98)Ti_(0.02) and VC.