DIN20Mn5钢国产化综合性能研究

本文对国产化了的ＤＩＮ２０Ｍｎ５锻钢进行了研究，做了一系列试验，其中包括化学成分的配制，钢的临界温度和热处理工艺参数的测定，小试样和大截面以及工件本体性能的测试，微观组织分析，低温韧性和断裂韧性的测定等。结果表明：自行研制的２０Ｍｎ５锻钢有较高的强度与塑，韧性，焊接性优良，可作为焊接钢，达到了德国２０Ｍｎ５钢的水平。

Study on Complex Performance of the Home DIN20Mn 5 Forge Steel

DIN 20Mn 5 forge steel is studied in this paper. A series of test, in which are included making up of chemical compositions of the steel, determining of its critical temperature and technological parameter at heat treatment, measuring of mechanical properties and low temperature toughness and fracture toughness for small,large section specimens and workpiecs from the steel as well as analyzing of their micro structure, are conducted. The results show, that the home developed forge steel 20Mn 5 has more high strength. plasticity,toughness and excellent weldability.lt can be used as steel for welding and reaches the level,which 20Mn 5,made in Germany, has.