Development of high strength Al alloys produced by newly proposed high speed continuous casting

新提出的高速连铸生产高强度铝合金的开发

• 批准号: 22760081
• 负责人: OKAYASU Mitsuhiro
• 金额: $ 2.75万
• 依托单位: Ehime University (2011-2013)Akita Prefectural University (2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760081/
• 关键词: 材料設計; プロセス; 物性・評価

In this research, the high speed heated-mold continuous casting process was developed. With this casting process, high quality cast samples were produced, which exhibit excellent mechanical properties (high strength and high ductility) that are about twice as high as those for the same alloy produced by conventional gravity casting. The effects of casting speed on the mechanical properties were investigated, using the samples with different microstructural characteristics (SDAS and eutectic structures). There are linear correlations between SDAS and tensile properties. These linear correlations, however, break down, especially for UTS versus SDAS and strain versus SDAS, as the eutectic structures become more than 0.003mm in diameter, when the UTS and ductility decrease significantly. For eutectic structures larger than 0.003mm, failure is dominated by the brittle eutectic phases, for which SDAS is no longer strongly correlated with UTS and strain.

本研究开发了高速热型连铸工艺。通过这种铸造工艺，生产出高质量的铸造样品，其表现出优异的机械性能（高强度和高延展性），这些机械性能是通过常规重力铸造生产的相同合金的机械性能的约两倍。采用不同组织特征的试样（SDAS和共晶组织），研究了铸造速度对力学性能的影响。SDAS与拉伸性能之间存在线性相关关系。然而，当共晶组织的直径超过0.003mm时，当UTS和延展性显著降低时，这些线性相关性被打破，特别是对于UTS与SDAS和应变与SDAS。对于大于0.003mm的共晶组织，失效由脆性共晶相主导，SDAS不再与UTS和应变强烈相关。

项目成果

Material Properties of Cast Aluminum Alloys Produced by Various Casting Processes

各种铸造工艺生产的铸造铝合金的材料性能

• 发表时间: 2013
• 期刊: Materials Science Forum
• 作者: M. Okayasu;K. Ota;S. Takeuchi;T. Shiraishi
• 通讯作者: T. Shiraishi

大野式連続鋳造法で作製したアルミニウム合金鋳物の機械的性質

大野连铸法生产的铝合金铸件的力学性能

• 发表时间: 2010
• 作者: 鷹巣哲;岡安光博;佐藤遼;水野衛
• 通讯作者: 水野衛

High Mechanical and Fatigue Properties of Cast Aluminum Alloys Produced by Ohno Continuous Casting Technology

大野连续铸造技术生产的铸造铝合金具有高机械和疲劳性能

• 发表时间: 2010
• 作者: M. Okayasu;S. Takasu K. Sato;M. Mizuno
• 通讯作者: M. Mizuno

Mechanical properties of Al-Si_<13>-Mg_<1.4>-Cu_1 alloys produced by the Ohno continuous casting process

大野连铸工艺生产的Al-Si_<13>-Mg_<1.4>-Cu_1合金的力学性能

• 发表时间: 2010
• 期刊: Materials Science and Engineering A
• 作者: Mitsuhiro Okayasu;et al.
• 通讯作者: et al.

アルミニウム合金鋳物の材料特性に及ぼす凝固速度の影響

凝固速率对铝合金铸件材料性能的影响

• 发表时间: 2014
• 作者: 吉田祥;岡安光博;白石哲郎
• 通讯作者: 白石哲郎