Glass forming ability and reliability in fracture stress for Mg–Cu–Ni–Nd–Y bulk metallic glasses
Glass forming ability and reliability in fracture stress for Mg–Cu–Ni–Nd–Y bulk metallic glasses
复制标题
DOI：
10.1016/j.msea.2008.04.036
复制
发表时间：
2008-09
期刊：
影响因子：
6.4
通讯作者：
Qiuyang Li;K. Qiu;X. Yang;Y. Ren;X. Yuan;T. Zhang
中科院分区：
文献类型：
--
作者：
Qiuyang Li;K. Qiu;X. Yang;Y. Ren;X. Yuan;T. Zhang
采用铜模铸造、差示扫描量热仪 (DSC) 和压缩试验机研究了 Mg-Cu-Ni-Nd-Y 合金的玻璃形成能力 (GFA)、热稳定性和力学性能。结果表明，当部分Cu和Y分别被Ni和Nd替代时，Mg58.5Cu30.5Y11合金的GFA和热稳定性均得到改善。 Mg58.5Cu27.5Ni3Nd5Y6合金获得了直径13mm的全非晶棒，与Mg58.5Cu30.5Y11合金相比，该合金具有较大的过冷液态区域和较窄的熔化温度区间。建筑面积是根据经验参数进行讨论的。我们建议使用计算断裂应力和实验断裂应力之间的相对差异来估计实验应力的可靠性，这与我们的结果密切相关。
The glass forming ability (GFA), thermal stability and mechanical properties of Mg–Cu–Ni–Nd–Y alloy were investigated by using copper mold casting, differential scanning calorimeter (DSC) and compression tester. The results show that both the GFA and thermal stability for Mg58.5Cu30.5Y11alloy are improved when partial Cu and Y are substituted by Ni and Nd, respectively. A full amorphous rod of 13mm in diameter was obtained for Mg58.5Cu27.5Ni3Nd5Y6alloy, which has a large-supercooled liquid region, and a narrow melting temperature interval compared with Mg58.5Cu30.5Y11alloy. The GFA was discussed in term of experiential parameters. We suggest using the relative difference between calculated and experimental fracture stress to estimate the reliability of experimental stress, which is correlated well with our results.