论文部分内容阅读
高锰钢是1882年英国人哈德菲尔德(Hadfield)发明的一种含碳0.9～1.4%、锰10～14%的耐磨钢。它广泛用作冶金、矿山、建筑、铁道及拖拉机等机械制造业中的耐磨件。高锰钢的平衡组织应该是铁索体和碳化物,而实际条件下的铸态组织是奥氏体、碳化物和珠光体。由于碳化物多沿奥氏体晶界分布,使铸态钢的强度降低、脆性增大。用砂型浇铸的铸态试样试验表明,其抗拉强度只有392～490MPa(40～50kgf/mm~2),延
High manganese steel was invented by Hadfield in 1882 as a carbon steel containing 0.9-1.4% carbon and 10-14% manganese wear resistant steel. It is widely used as wear-resistant parts in machinery manufacturing such as metallurgy, mining, construction, railway and tractor. The equilibrium structure of high manganese steel should be ferrite and carbides, while the as-cast structure under the actual conditions is austenite, carbide and pearlite. Due to the distribution of carbides along the austenite grain boundaries, the strength of as-cast steel decreases and the brittleness increases. The test of as-cast as-cast sample shows that the tensile strength is only 392 ~ 490MPa (40 ~ 50kgf / mm ~ 2)