[1]卢 照 陆泰榕 梁 健 冯恩浪 陈贞南 韦 毅 黄彩敏林良军 林茂丰.相图热力学数据库驱动稀土强化Al-Si-Mg系列铸造铝合金高效设计策略[J].大众科技,2023,25(8):66-69.
　Efficient Design Strategy for Rare Earth Strengthening Al-Si-Mg Cast Aluminum Alloy Driven by Thermodynamic Database[J].Popular Science & Technology,2023,25(8):66-69.
点击复制

相图热力学数据库驱动稀土强化Al-Si-Mg系列铸造铝合金高效设计策略()
分享到：

《大众科技》[ISSN:1008-1151/CN:45-1235/N]

卷:
25
期数:
2023年8
页码:
66-69
栏目:
轻工与化工
出版日期:
2023-08-20

文章信息/Info

Title:
Efficient Design Strategy for Rare Earth Strengthening Al-Si-Mg Cast Aluminum Alloy Driven by Thermodynamic Database
作者:
卢 照1 陆泰榕2 梁 健3 冯恩浪4 陈贞南4 韦 毅2 黄彩敏1林良军2 林茂丰3
（1.桂林电子科技大学材料科学与工程学院/广西信息材料重点实验室，广西 桂林 541004；2.广西产研院新型功能材料研究所有限公司，广西 南宁 530004；3.广西平果铝合金精密铸件有限公司，广西 百色 531405；4.吉利百矿集团有限公司，广西 百色 533000）
关键词:
铸造铝合金; 相图计算; 晶粒细化; 半共格; 力学性能
Keywords:
cast aluminum alloy;  phase diagram calculation;  grain refinement;  semi-coherent;  mechanical property
文献标志码:
A
摘要:
文章基于稀土铝合金相图热力学数据库，通过构建含稀土的铸造铝合金非平衡凝固相图，精确预测并实验验证了稀土Sc和Ce在A357铸造合金中的最佳添加含量。通过合金金相组织、力学性能和合金强化相与铝的界面结构分析表明，合金的强化由晶粒细化和半共格强化共同确定，其中晶粒细化是合金强化的主控因素。该工作为高强、高韧铝合金的开发提供了一个全新的高效设计策略。
Abstract:
Based on the thermodynamic database of rare earth aluminum alloy, this article accurately predicted and experimentally verified the optimal addition content of rare earth Sc and Ce in A357 casting alloy by constructing a non equilibrium solidification phase diagram of cast aluminum alloy containing rare earth elements. The analysis of the metallographic structure, mechanical properties, and interface structure between strengthening phase and aluminum showed that the strengthening of the alloy was determined by both grain refinement and semi-coherent phase. However, the grain refinement was the main controlling factor for alloy strengthening. This work provides a new and efficient design strategy for the development of high-strength aluminum alloys.

参考文献/References:

[1] LU Z, ZHANG L J. Thermodynamic description of the quaternary Al-Si-Mg-Sc system and its application to the design of novel Sc-additional A356 alloys[J]. Materials and Design, 2017, 116: 427-437.[2] LI J H, ALBU M, HOFER F, et al. Solute adsorption and entrapment during eutectic Si growth in A-Si-based alloys[J]. Acta Materialia, 2015, 83: 187-202.[3] LI J H, WANG X D, LUDWIG T H, et al. Modification of eutectic Si in Al-Si alloys with Eu addition[J]. Acta Materialia, 2015, 84(85): 153-163.[4] JIANG Q C, XU C L, WANG H Y, et al. Estimation of the shifting distance of the eutectic point in hypereutectic Al-Si alloys by the lever rule[J]. Scripta Materialia, 2007, 56(5): 329-332.[5] LU Z, TANG Y, ZHANG L J. Atomic mobility in liquid and fcc Al-Si-Mg-RE (RE=Ce, Sc) alloys and its application to the simulation of solidification processes in RE -containing A357 alloys[J]. International Journal of Materials Research, 2017, 108(6): 465-476.[6] FASOYINU F A, COUSINEAU D, NEWCOMBE P, et al. Grain refinement of aluminum alloy 356.0 with scandium, zirconium, and a combination of titanium and boron[J]. Transactions of the American Foundrymen’s Society, 2001, 109: 397-418.[7] PATAKHAM U, KAJORNCHAIYAKUL J, LIM- MANEEVICHITR C. Modification mechanism of eutectic silicon in Al-6Si-0.3Mg alloy with scandium[J]. Journal of Alloys and Compounds, 2013, 575(15): 273-284.[8] OLSON G B, KUEHMANN C J. Materials genomics: From CALPHAD to flight[J]. Scripta Materialia, 2014, 70(1): 25-30.[9] OLSON G B. Computational design of hierarchically structured materials[J]. Science, 1997, 277(5330): 1237-1242.[10] SlCHEIL E. Bemerkungen zur Schichtkristallbildung[J]. Zeitschrift fur Metallkunde, 1942, 34: 70-72.[11] LU K, LU L, SURESH S. Strengthening materials by engineering coherent internal boundaries at the nanoscale[J]. Science, 2009, 324(5925): 349-352.[12] LI Y J, MUGGERUD A M F, OLSEN A. Precipitation of partially coherent α-Al(Mn,Fe)Si dispersoids and their strengthening effect in AA 3003 alloy[J]. Acta Materialia, 2012, 60(3): 1004-1014.

备注/Memo

备注/Memo:
【收稿日期】2023-03-12【基金项目】国家自然科学基金（52061007）；广西科技重大专项（AA22068084）；中央引导地方专项（2022ZYZX3015）；广西重点研发计划（2021AB16009、2022AB16014）。【作者简介】卢照（1986－），桂林电子科技大学材料科学与工程学院副研究员、院长助理，博士，从事稀土功能材料、轻质金属结构材料的相图热力学、合金设计与制造工作。
更新日期/Last Update: 2023-08-24