Refined Solidification Structure and Improved Formability of A356 Aluminum Alloy Plate Produced using a High-Speed Twin-Roll Strip Caster
Refined Solidification Structure and Improved Formability of A356 Aluminum Alloy Plate Produced using a High-Speed Twin-Roll Strip Caster
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高速双辊带材连铸机生产A356铝合金板的细化凝固组织和提高成形性能
DOI：
10.2320/matertrans.45.403
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发表时间：
2004
影响因子：
1.2
通讯作者：
T. Haga
中科院分区：
文献类型：
--
作者：
Kenta Suzuki;S. Kumai;Yuichi Saito;A. Sato;T. Haga
通过配备有一对纯铜水冷辊的带材连铸机将A356铝合金铸造成2毫米厚的板材。双辊铸造板表现出相当细化的初铝枝晶和共晶凝固结构。板近表面区域的估计最大冷却速率为 4000 K/s。这些值明显高于永久铸模的冷却速率 (2 K/s)。将铸造板冷轧并退火成0.5毫米厚的板材。对所得片材进行180°弯曲试验。双辊铸造产品中没有出现裂纹。成形性的改善被认为主要归因于细小硅颗粒的均匀分布。
An A356 aluminum alloy was cast into a 2 mm thick plate by a strip caster equipped with a pair of water-cooled rolls made of pure copper. The twin-roll cast plate exhibited fairly refined primary aluminum dendrite- and eutectic solidified structure. The estimated maximum cooling rate at the near-surface region of the plate is 4000 K/s. These values are significantly higher than the cooling rate for the permanent mold cast (2 K/s). The cast plate was cold-rolled and annealed into a 0.5 mm thick sheet. The resultant sheet was subjected to the 180 bending test. No cracking occurred in the twin-roll cast product. Improved formability is considered to be mainly due to the homogeneous distribution of fine Si particles.
影响因子：
6.3
作者：
T. Haga;Kenta Takahashi;M. Ikawa;H. Watari
通讯作者：
T. Haga;Kenta Takahashi;M. Ikawa;H. Watari