| 摘要 |
In one aspect of the present invention, provided is an austenite steel material having superior ductility, comprising, as percentages by weight, from 8 to 15% of manganese (Mn) and no more than 3% (excluding 0%) of copper (Cu), and having a carbon (C) content satisfying both 33.5C+Mn=25 and 33.5C-Mn=23, and comprising a balance of iron and unavoidable impurities; wherein ductility and abrasion resistance can be improved while at the same time also ensuring superior economic viability as the austenite is stabilised and the occurrence of carbides in network form at austenite grain boundaries is suppressed as a result of the addition of Cu, which is more advantageous in suppressing the formation of carbides than is manganese, and appropriate control of the carbon and manganese contents. |
