铝在Fe-Mn系低温钢中作用的研究  

Research on the Effect of Aluminium in the FeMn Cast Steel Used for Cryogenic Purpose

作　　者：魏广升[1,2] 秦紫端[1,2] 

机构地区：[1]青岛大学 [2]大连理工大学

出　　处：《铸造》1998年第4期11-14,17,共5页Foundry

摘　　要：本研究工作设计了用于深冷条件下的低碳高锰铸钢的化学成分，研究了铝元素含量的变化对铸钢的金相组织和力学性能的影响。结果表明，具有稳定的奥氏体组织和良好力学性能的最佳铝含量为３％左右；当铝含量达到５％时，奥氏体组织中将出现δ铁素体脆性相，从而导致低温韧性的降低。Abstract The chemical composition of lowcarbon highmanganese cast steel suitable for cryogenic purpose has been designed and the microstructure and mechnical properties of the cast steel with variable aluminium were investigated, results showed that the cast steel containing about 3 percent of aluminium,has stable microstructure of austenite and better mechanical properties,but,when large percentages up to 5 percent of aluminium are added,the δferrite brittle phase will occur in the austenite,thus markedly reducing impact toughness at low temperature.

关 键 词：Fe-Mn系 低温铸钢 Δ铁素体 低温韧性 铝 

分 类 号：TG142.13[一般工业技术—材料科学与工程]