Fig. 8From: Experimental determination of TRIP-parameter K for mild- and high-strength low-alloy steels and a super martensitic filler materialFree dilatometric curve for steel S355J2+N with external load concept. With Gleeble ® 3500 facility measured free dilatometric curves. For t 8.5 = 14 s (grey dashed curve) the onset temperature of (γ → α)-phase transformation is T tr ≈ 700 °C and for t 8.5 = 6 s (black curve) results T tr ≤ 600 °CBack to article page