研究了微量Ti对Mg-2%Nd(N2)二元合金组织和性能的影响.结果表明,在不影响N2铸造性能的情况下,微量Ti的加入大大细化了N2铸态合金的组织,提高了铸态合金N2在室温和高温的强度和塑性.微量Ti的加入也使N2合金在中温条件下的抗蠕变性能略有提高.使用二维点阵错配度模型研究了Ti对Mg-Nd二元合金的细化机理,结果表明α-Ti可以成为α-Mg凝固过程中的形核核心.
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