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材料导报  2019, Vol. 33 Issue (Z2): 389-393    
  金属与金属基复合材料 |
高性能铝锂合金关键力学性能各向异性的影响因素及控制措施
郝时嘉1,2, 陆政1,2, 李国爱1,2, 于娟1,2
1 北京航空材料研究院,北京 100095;
2 北京先进铝合金材料及应用工程技术研究中心,北京 100095
Influencing Factors and Control Measures of Anisotropy of Key MechanicalProperties of High-property Al-Li Alloy
HAO Shijia1,2, LU Zheng1,2, LI Guoai1,2, YU Juan1,2
1 Beijing Institute of Aeronautical Materials, Beijing 100095;
2 Beijing Engineering Research Center of Advanced Aluminum Alloys and Applications, Beijing 100095
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摘要 铝锂合金具有低密度、高比强度以及良好的高温、低温等一系列优异性能,在军事和航天领域具有广阔的应用前景。但是锂元素的添加也导致了诸多缺点,例如较低的短横向韧性、断裂韧性、热不稳定性,尤其是极其强烈的力学性能的各向异性,这严重影响了铝锂合金的使用。目前已有研究表明,晶体学织构和合金析出相是影响合金力学性能各向异性的主要因素,因此消除各向异性的方法也分为两种:调控织构类型和调整合金析出相,其中可以通过改变轧制前材料的状态和轧制工艺来调整织构类型,改变合金成分和时效工艺来调整析出相类型。本文综述了铝锂合金关键力学性能各向异性的成因以及消除各向异性所开展的研究以及对应措施。
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郝时嘉
陆政
李国爱
于娟
关键词:  铝锂合金  各向异性  织构  析出相    
Abstract: Due to a series of excellent properties such as low density, high specific strength and good high and low temperature, Al-Li alloy has a wide application prospect in military and aerospace fields. However, the addition of lithium also leads to many disadvantages, such as low short transverse toughness, fracture toughness, thermal instability, especially extremely strong anisotropy of mechanical properties, which seriously affects the use of Al-Li alloy. At present, studies have shown that the crystallographic texture and the precipitated phase of the alloy are the main factors affecting the anisotropy of the mechanical properties of the alloy. So there are two ways to eliminate anisotropy: regulating texture type and adjusting precipitate phase. The texture type can be adjusted by changing the material state and rolling process before rolling. Adjusting precipitate type by changing alloy composition adjustment and aging process. In this paper, the causes of anisotropy in key mechanical properties of Al-Li alloys, the research on eliminating anisotropy and the corresponding measures are reviewed.
Key words:  aluminum lithium alloy    anisotropy    texture    precipitated phase
               出版日期:  2019-11-25      发布日期:  2019-11-25
ZTFLH:  TB31  
基金资助: 国家自然科学基金(51474195)
通讯作者:  luzheng@621.com   
作者简介:  郝时嘉,中国航发北京航空材料院硕士生。2013年9月至2017年6月,在辽宁工程技术大学获得材料成型及控制工程学士学位。研究工作主要为铝合金的工艺设计和性能改进。
陆政,中国航发北京航空材料研究院博士研究生导师。在国内外学术期刊上发表论文150余篇,申请国家发明专利20余项,其中授权17项。其团队主要研究方向为高性能铝合金、铝锂合金研制、应用研究及半成品的研制与生产成套技术。负责多项科研项目,包括“高性能第三代铝锂合金厚板应用技术开发”和 “铝合金精密模锻件轮毂技术应用”等。
引用本文:    
郝时嘉, 陆政, 李国爱, 于娟. 高性能铝锂合金关键力学性能各向异性的影响因素及控制措施[J]. 材料导报, 2019, 33(Z2): 389-393.
HAO Shijia, LU Zheng, LI Guoai, YU Juan. Influencing Factors and Control Measures of Anisotropy of Key MechanicalProperties of High-property Al-Li Alloy. Materials Reports, 2019, 33(Z2): 389-393.
链接本文:  
http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2019/V33/IZ2/389
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