The effect of deformation temperature on the mechanical properties 1-GPa-grade TRIP steels with different retained austenite (?R) morphologies was studied. dependence deformation-induced martensitic transformation behavior also investigated. uniform elongation below room relatively large in needle-like ?R steel, whereas tensile strength at each almost same as it independent morphology. better s...

In this study, high-temperature tensile tests were carried out on a Gleeble-3500 thermal simulator under strain rate of ε = 1 × 10−3 s−1 in the temperature range 600–1310 °C. The hot deformation process Fe–15.3Mn–0.58C–2.3Al TWIP/TRIP at different temperatures was studied. whole tested range, reduction area ranged from 47.3 to 89.4% and reached maximum value 1275 Assuming that 60% is relative d...

Welding and local heat treatment with a high-power laser for GPa-grade transformation-induced plasticity (TRIP) steel were studied. When the focal length scan speed controlled under fixed power, defect-free full penetration conditions achieved at various inputs. The effects of input on mechanical properties evaluated. results showed that softened zone was lowered to 350 HV hardness by tempered ...