铌对灰铸铁机械性能的影响

Effect of Nb on the Mechanical Properties of Gray Cast Iron

研究了铌对灰铸铁机械性能的影响及其强化机理；试验表明，铌在提高铸铁耐磨性能的同时又能显著地提高铸铁的强度性能，改善铸铁的韧性；当含铌量为０１５％～０４％时。

Effect of Nb on mechanical properties and strenghtening mechanism of gray cast iron were studied.the experimental result shows that Nb obviously improves the machanical properties of gray cast iron.When the contentof Nb is 0.15%0.40% the mechanical properties may be increased one grad.