多轴锻造与T852热处理对Al-Cu-Li合金组织及力学性能的影响

doi:10.13251/j.issn.0254-6051.2022.09.014

金属热处理 ›› 2022, Vol. 47 ›› Issue (9): 79-86.DOI: 10.13251/j.issn.0254-6051.2022.09.014

多轴锻造与T852热处理对Al-Cu-Li合金组织及力学性能的影响

钟立伟^1,2, 冯朝辉^1,2, 高文理³, 陈军洲^1,2, 陆政^1,2

1.中国航发北京航空材料研究院铝合金研究所, 北京 100095;
2.中国航发北京航空材料研究院北京市先进铝合金材料及应用工程技术研究中心, 北京 100095;
3.湖南大学材料科学与工程学院, 湖南长沙 410082

收稿日期:2022-04-20 修回日期:2022-07-18 发布日期:2022-10-18
作者简介:钟立伟(1993—),男,工程师,博士,主要研究方向为先进航空铝合金及应用,E-mail:lwzhongchn@163.com
基金资助:
国家自然科学基金(51374187)

Effects of multi-axial forging and T852 heat treatment on microstructure and mechanical properties of Al-Cu-Li alloy

Zhong Liwei^1,2, Feng Zhaohui^1,2, Gao Wenli³, Chen Junzhou^1,2, Lu Zheng^1,2

1. Institute of Aluminum Alloy, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
2. Beijing Engineering Research Center of Advanced Aluminum Alloys and Applications, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
3. School of Materials Science and Engineering, Hunan University, Changsha Hunan 410082, China

Received:2022-04-20 Revised:2022-07-18 Published:2022-10-18

摘要/Abstract

摘要： 采用SEM、EBSD、TEM和拉伸试验等方法,研究不同道次多轴锻造及T852热处理对Al-Cu-Li合金显微组织和力学性能的影响。结果表明,Al-Cu-Li合金经多道次多轴锻造后晶粒被显著细化,晶粒尺寸由均匀化退火态的450 μm减小至6道次的5 μm,晶粒细化机制以连续动态再结晶为主,且伴随不连续动态再结晶;6道次锻造合金经T852热处理后,晶界析出相呈不连续分布,晶内析出大量板条状T₁相及少量θ′相,与均匀化退火态粗化T₁相相比,时效析出T₁相发生了明显细化;6道次锻造且T852热处理后,合金的抗拉强度、屈服强度及伸长率分别高达544 MPa、462 MPa和8.6%,依次为均匀化退火态的2.0、2.4及4.1倍,而且相应的断裂模式由脆性断裂转变为韧性断裂。

关键词: Al-Cu-Li合金, 多轴锻造, 热处理, 微观组织, 力学性能

Abstract: Effect of multi-axial forging with different passes and T852 heat treatment on microstructure and mechanical properties of Al-Cu-Li alloy was studied by means of SEM, EBSD, TEM and tensile test. The results show that the grain structure of the Al-Cu-Li alloy is significantly refined after multi-pass multi-axial forging, and the grain size is reduced from 450 μm in as-homogenized state to 5 μm in as-forged state with six passes. The grain refinement mechanism is mainly continuous dynamic recrystallization, accompanied by discontinuous dynamic recrystallization. After T852 heat treatment, the precipitates on grain boundary of the as-forged alloy with six passes present discontinuous distribution, and a large number of lath-shaped T₁ phases and a small amount of θ′ phases are precipitated in the grains. Compared with the coarsened T₁ phase in as-homogenized state, the T₁ phase in as-aged state is obviously refined. After 6 passes forging and T852 heat treatment, the tensile strength, yield strength and elongation of the alloy are 544 MPa, 462 MPa and 8.6%, respectively, which are 2.0, 2.4 and 4.1 times of those in as-homogenized state, and the corresponding fracture mode changes from brittle fracture to ductile fracture.

Key words: Al-Cu-Li alloy, multi-axial forging, heat treatment, microstructure, mechanical properties

中图分类号:

TG146.2

钟立伟, 冯朝辉, 高文理, 陈军洲, 陆政. 多轴锻造与T852热处理对Al-Cu-Li合金组织及力学性能的影响[J]. 金属热处理, 2022, 47(9): 79-86.

Zhong Liwei, Feng Zhaohui, Gao Wenli, Chen Junzhou, Lu Zheng. Effects of multi-axial forging and T852 heat treatment on microstructure and mechanical properties of Al-Cu-Li alloy[J]. Heat Treatment of Metals, 2022, 47(9): 79-86.

参考文献

[1]Zhong Liwei, Gao Wenli, Feng Zhaohui, et al. Microstructure characteristics and constitutive modeling for elevated temperature flow behavior of Al-Cu-Li X2A66 alloy[J]. Journal of Materials Research, 2018, 33(8): 912-922.
[2]冯朝辉, 钟立伟, 高文理, 等. 时效制度对2050铝锂合金力学性能及断裂行为的影响[J]. 金属热处理, 2019, 44(9): 108-111.
Feng Zhaohui, Zhong Liwei, Gao Wenli, et al. Effect of aging on mechanical properties and fracture behavior of 2050 Al-Li alloy[J]. Heat Treatment of Metals, 2019, 44(9): 108-111.
[3]Zhong Liwei, Gao Wenli, Feng Zhaohui, et al. Hot deformation characterization of as-homogenized Al-Cu-Li X2A66 alloy through processing maps and microstructural evolution[J]. Journal of Materials Science and Technology, 2019, 35(10): 2409-2421.
[4]李天麒, 尹晨, 闫原原, 等. 退火工艺对搅拌摩擦加工镁合金微观组织和显微硬度的影响[J]. 金属热处理, 2020, 45(5): 141-146.
Li Tianqi, Yin Chen, Yan Yuanyuan, et al. Effect of annealing process on microstructure and microhardness of magnesium alloy fabrication by friction stir processing[J]. Heat Treatment of Metals, 2020, 45(5): 141-146.
[5]Martynenko N, Lukyanova E, Serebryany V, et al. Effect of equal channel angular pressing on structure, texture, mechanical and in-service properties of a biodegradable magnesium alloy[J]. Materials Letters, 2019, 238: 218-221.
[6]Toth L S, Gu C F. Ultrafine-grain metals by severe plastic deformation[J]. Materials Characterization, 2014, 92: 1-14.
[7]郭强, 严红革, 陈振华, 等. 多向锻造技术研究进展[J]. 材料导报, 2007, 21(2): 106-108.
Guo Qiang, Yan Hongge, Chen Zhenhua, et al. Research progress in multiple forging process[J]. Materials Review, 2007, 21(2): 106-108.
[8]Xia X S, Chen Q, Zhao Z D, et al. Microstructure, texture and mechanical properties of coarse-grained Mg-Gd-Y-Nd-Zr alloy processed by multidirectional forging[J]. Journal of Alloys and Compounds, 2015, 623: 62-68.
[9]Nie K B, Deng K K, Wang X J, et al. Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties[J]. Materials Science and Engineering A, 2015, 624: 157-168.
[10]Lu Z D, Zhang C J, Feng H, et al. Effect of heat treatment on microstructure and tensile properties of 2vol.%TiC_p/near-β Ti composite processed by isothermal multidirectional forging[J]. Materials Science and Engineering A, 2019, 761: 138064.
[11]Zhao J H, Deng Y L, Zhang J, et al. Effect of temperature and strain rate on the grain structure during the multidirectional forging of the Al-Zn-Mg-Cu alloy[J]. Materials Science and Engineering A, 2019, 756: 119-128.
[12]Rao P N, Singh D, Jayaganthan R. Mechanical properties and microstructural evolution of Al6061 alloy processed by multidirectional forging at liquid nitrogen temperature[J]. Materials and Design, 2014, 56: 97-104.
[13]Mahjoub R, Laws K J, Stanford N, et al. General trends between solute segregation tendency and grain boundary character in aluminum-An ab into study[J]. Acta Materialia, 2018, 158: 257-268.
[14]Wang Y X, Zhao G Q, Xu X, et al. Constitutive modeling, processing map establishment and microstructure analysis of spray deposited Al-Cu-Li alloy 2195[J]. Journal of Alloys and Compounds, 2019, 779: 735-751.
[15]Yu W C, Li H Y, Du R, et al. Characteristic constitution model and microstructure of an Al-3.5Cu-1.5Li alloy subjected to thermal deformation[J]. Materials Characterization, 2018, 145: 53-64.
[16]Yu Q Y, Yao Z H, Dong J X. Deformation and recrystallization behaviour of a coarse-grain, nickel-base superalloy Udimet720Li ingot material[J]. Materials Characterization, 2015, 107: 398-410.
[17]Sitdikov O, Garipova R, Avtokratova E, et al. Effect of temperature of isothermal multidirectional forging on microstructure development in the Al-Mg alloy with nano-size aluminides of Sc and Zr[J]. Journal of Alloys and Compounds, 2018, 746: 520-531.
[18]Lin Y, Zheng Z Q, Li S C, et al. Microstructures and properties of 2099 Al-Li alloy[J]. Materials Characterization, 2013, 84: 88-99.
[19]Deschamps A, Garcia M, Chevy J, et al. Influence of Mg and Li content on the microstructure evolution of Al-Cu-Li alloys during long-term ageing[J]. Acta Materialia, 2017, 122: 32-46.
[20]Jo H H, Hirano K I. Precipitation processes in Al-Cu-Li alloy studied by DSC[J]. Materials Science Forum, 1987, 13-14: 377-382.
[21]张显峰, 李国爱, 陆政, 等. 淬火后预拉伸对自然时效状态Al-Li合金组织和性能的影响[J]. 金属学报, 2016, 52(12): 1497-1502.
Zhang Xianfeng, Li Guoai, Lu Zheng, et al. Effect of preaged stretch after quenched on the properties and microstructure of a naturally aged Al-Li alloy[J]. Acta Metallurgica Sinica, 2016, 52(12): 1497-1502.
[22]Munoz M M A, Morris D G. Microstructure control during severe plastic deformation of Al-Cu-Li and the influence on strength and ductility[J]. Materials Science and Engineering A, 2011, 528(9): 3445-3454.
[23]Wang Y X, Zhao G Q, Xu X, et al. Microstructures and mechanical properties of spray deposited 2195 Al-Cu-Li alloy through thermo-mechanical processing[J]. Materials Science and Engineering A, 2018, 727: 78-89.
[24]Rao P N, Singh D, Brokmeier H G, et al. Effect of ageing on tensile behavior of ultrafine grained Al6061 alloy[J]. Materials Science and Engineering A, 2015, 641: 391-401.
[25]Seidman D N, Marquis E A, Dunand D C. Precipitation strengthening at ambient and elevated temperatures of heat-treatable Al(Sc) alloys[J]. Acta Materialia, 2002, 50(16): 4021-4035.

多轴锻造与T852热处理对Al-Cu-Li合金组织及力学性能的影响

Effects of multi-axial forging and T852 heat treatment on microstructure and mechanical properties of Al-Cu-Li alloy

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