Diagram (IMAGE) Science China Press Caption This is a Fe-C phase diagram showing influence of addition of 0.005%N+0.015%V (a) and 0.04%Mn-0.06%Si-0.02%S-0.5%P (b). L, C, γ, and α represent liquid phase, cementite, austenite, and ferrite, respectively. Credit ©Science China Press Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.