Suppression of the brittle grain boundary fracture of aluminum alloys by means of soaking in a liquid metal bath

液态金属浴浸泡抑制铝合金脆性晶界断裂

• 批准号: 25630305
• 负责人: HORIKAWA Keitaro
• 金额: $ 2.58万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2013
• 资助国家: 日本
• 起止时间: 2013-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-25630305/
• 关键词: 液体金属; 粒界; 破壊; 偏析; 無害化; アルミニウム合金

Al-Mg base alloys show grain boundary embrittlement at high temperatures caused by the segregation of sodium at grain boundaries. To suppress the embrittlement, it has been reported that the additional elements such as bismuth or antimony with high affinity with sodium are effective. In the present study, a novel method to add the elements was proposed by means of soaking in liquid metal baths to imporve the hot ductility of Al-Mg base alloys. As a result, it was revealed that the soaking in liquid bismuth could suppress the high temperature embrittlement. On the other hand in the soaking in liquid indium bath, it was shown that the effects were variable according to the temperature of soaking.

Al-Mg基合金在高温下表现出晶界脆化，这是由于钠在晶界上的偏聚造成的。为了抑制脆化，已经报道了与钠具有高亲和力的附加元素如铋或锑是有效的。本研究提出了一种新的添加元素的方法，即通过在液态金属浴中浸泡的方式来改善铝镁基合金的热塑性。结果表明，在液态铋中浸泡可以抑制高温脆化。另一方面，在液体铟浴中的浸泡，它表明，根据浸泡温度的影响是可变的。

项目成果

5083アルミニウム合金の高温延性に及ぼす液体Bi接触の影響

液态Bi接触对5083铝合金高温塑性的影响

• 发表时间: 2013
• 作者: T. Hirosawa;N. Takata;M. Takeyama;Masao Takeyama;甲能渉,堀川敬太郎,谷垣健一,小林秀敏
• 通讯作者: 甲能渉,堀川敬太郎,谷垣健一,小林秀敏

Al-5%Mg合金の高温延性に及ぼす液体Sn接触の影響

液态Sn接触对Al-5%Mg合金高温塑性的影响

• 发表时间: 2013
• 作者: T. Hirosawa;N. Takata;M. Takeyama;Masao Takeyama;甲能渉,堀川敬太郎,谷垣健一,小林秀敏;菅仁志,堀川敬太郎,谷垣健一,小林秀敏
• 通讯作者: 菅仁志,堀川敬太郎,谷垣健一,小林秀敏