Influence of super-gravity coefficient on spatial distribution of solidification structure in Al-14.5Si alloys
Influence of super-gravity coefficient on spatial distribution of solidification structure in Al-14.5Si alloys
复制标题
超重力系数对Al-14.5Si合金凝固组织空间分布的影响
DOI：
10.1016/j.jmrt.2021.10.106
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发表时间：
2021-11-08
影响因子：
6.4
通讯作者：
Liu, Jing
中科院分区：
文献类型：
--
作者：
Gan, Zhanghua;Hu, Zhikui;Liu, Jing
研究了超重力场对Al-14.55i合金共晶组织空间分布的影响。Al-14.55i合金分别在正常重力（1g）和各种超重力场（1000 g、2000 g、3000 g、4000 g和5000 g，g = 9.8m/s（2））下凝固。结果表明，在超重力场作用下，共晶硅在凝固组织的核心区域分布均匀。随着重力系数的增加，共晶Si得到明显细化，力学性能显著提高。在超重力系数较高的情况下，在核心区可以观察到多个富铁相。随着富铁相的形成，合金的延伸率略有下降。详细讨论了超重力场作用下共晶组织的细化机理和富铁相的形成机理。(C)2021年，任作者。由爱思唯尔公司出版
We reported the influence of super-gravity field on spatial distribution of eutectic structure in Al-14.55i alloys. The Al-14.55i alloys were solidified under normal gravity (1 g) and various super-gravity fields (1000 g, 2000 g, 3000 g, 4000 g and 5000 g, g = 9.8 m/s(2)), respectively. The results indicated that the homogeneous distribution of eutectic Si could be observed in the core region of the samples solidified under super-gravity field. As the coefficient of gravity increased, the eutectic Si was significantly refined, resulting in the significant enhancement of the mechanical properties. Noted that several iron-rich phases could be observed in the core region under higher super-gravity coefficient. With the formation of the iron-rich phase, the elongation of the alloy decreased slightly. The refinement mechanism of the eutectic structure and the formation mechanism of the iron-rich phase under super-gravity field were discussed in detail. (C) 2021 The Author(s). Published by Elsevier B.V.