Mechanical behaviors and precipitation transformation of the lightweight high-Zn-content Al-Zn-Li-Mg-Cu alloy

被引:53
作者
Li, Ruixuan [1 ]
Ren, Zheng [2 ]
Wu, Yuan [1 ]
He, Zhanbing [1 ]
Liaw, Peter K. [3 ]
Ren, Jingli [4 ]
Zhang, Yong [1 ,5 ]
机构
[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] China Acad Ordnance Sci, Ningbo Branch, Ningbo, Peoples R China
[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[4] Zhengzhou Univ, Henan Acad Big Data, Zhengzhou 450001, Peoples R China
[5] Qinghai Univ, Qinghai Prov Key Lab New Light Alloys, Xining 810016, Peoples R China
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2021年 / 802卷
基金
美国国家科学基金会;
关键词
Al alloys; High entropy alloys; High Zn content; Precipitation strengthening; Precipitation transformation; HIGH-ENTROPY ALLOY; PHASE-STABILITY; LOW-DENSITY; ALUMINUM; MICROSTRUCTURE; SEGREGATION; SIZE;
D O I
10.1016/j.msea.2020.140637
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Designing high-performance Al-based alloys based on the entropy concept offers a promising strategy for next generation advanced structural materials. The main idea of entropy increasing is to increase the content of alloying elements. For traditional high-strength Al-Zn-Mg-Cu alloy, however, significantly increasing the content of alloying elements, especially when the Zn content is increased to above 10 at.% (atomic percent), leads to poor deformability and poor tensile property. Here, we overcome this trend by designing a quinary alloy based on the idea of high-entropy alloys. We fabricate a high-Zn-content Al80Zn14Li2Mg2Cu2 alloy with the Zn content above 10 at.%. It shows Zn, and Al-Zn precipitates in the as-cast state, and it is observed that Al-3(Li, Mg), MgZn2, and Zn nano-precipitates form after rolling. The precipitation transformation contributes to high strength and high deformability. Our present findings provide not only a fundamental understanding of precipitation transformation in the high-Zn-content Al alloys but valuable guidance for the development of lightweight alloys as well.
引用
收藏
页数:8
相关论文
共 34 条
[1]   Effects of ultrasonic melt treatment and solution treatment on the microstructure and mechanical properties of low-density multicomponent Al70Mg10Si10Cu5Zn5 alloy [J].
Baek, Eun-Ji ;
Ahn, Tae-Young ;
Jung, Jae-Gil ;
Lee, Jung-Moo ;
Cho, Young-Rae ;
Euh, Kwangjun .
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 696 :450-459
[2]   Concept of chemical short range order domain and the glass forming ability in multicomponent liquid [J].
Chen, GL ;
Hui, XD ;
Fan, SW ;
Kou, HC ;
Yao, KF .
INTERMETALLICS, 2002, 10 (11-12) :1221-1232
[3]   Tuning element distribution, structure and properties by composition in high-entropy alloys [J].
Ding, Qingqing ;
Zhang, Yin ;
Chen, Xiao ;
Fu, Xiaoqian ;
Chen, Dengke ;
Chen, Sijing ;
Gu, Lin ;
Wei, Fei ;
Bei, Hongbin ;
Gao, Yanfei ;
Wen, Minru ;
Li, Jixue ;
Zhang, Ze ;
Zhu, Ting ;
Ritchie, Robert O. ;
Yu, Qian .
NATURE, 2019, 574 (7777) :223-+
[4]   Phase stability and transformation in a light-weight high-entropy alloy [J].
Feng, Rui ;
Gao, Michael C. ;
Zhang, Chuan ;
Guo, Wei ;
Poplawsky, Jonathan D. ;
Zhang, Fan ;
Hawk, Jeffrey A. ;
Neuefeind, Joerg C. ;
Ren, Yang ;
Liaw, Peter K. .
ACTA MATERIALIA, 2018, 146 :280-293
[5]   SOLUTION HARDENING BY TETRAGONAL DISTORTIONS - APPLICATION TO IRRADIATION HARDENING IN FCC CRYSTALS [J].
FLEISCHER, RL .
ACTA METALLURGICA, 1962, 10 (SEP) :835-&
[6]   A high-entropy alloy with hierarchical nanoprecipitates and ultrahigh strength [J].
Fu, Zhiqiang ;
Jiang, Lin ;
Wardini, Jenna L. ;
MacDonald, Benjamin E. ;
Wen, Haiming ;
Xiong, Wei ;
Zhang, Dalong ;
Zhou, Yizhang ;
Rupert, Timothy J. ;
Chen, Weiping ;
Lavernia, Enrique J. .
SCIENCE ADVANCES, 2018, 4 (10)
[7]   Atom probe microscopy investigation of Mg site occupancy within δ′ precipitates in an Al-Mg-Li alloy [J].
Gault, Baptiste ;
Cui, Xiang Yuan ;
Moody, Michael P. ;
De Geuser, Frederic ;
Sigli, Christophe ;
Ringer, Simon P. ;
Deschamps, Alexis .
SCRIPTA MATERIALIA, 2012, 66 (11) :903-906
[8]   A fracture-resistant high-entropy alloy for cryogenic applications [J].
Gludovatz, Bernd ;
Hohenwarter, Anton ;
Catoor, Dhiraj ;
Chang, Edwin H. ;
George, Easo P. ;
Ritchie, Robert O. .
SCIENCE, 2014, 345 (6201) :1153-1158
[9]   Novel Ultralight-Weight Complex Concentrated Alloys with High Strength [J].
Jia, Yuefei ;
Jia, Yandong ;
Wu, Shiwei ;
Ma, Xindi ;
Wang, Gang .
MATERIALS, 2019, 12 (07)
[10]   Evaluation of microstructure, damping capacity and mechanical properties of Al-35Zn and Al-35Zn-0.5Sc alloys [J].
Jiang, H. J. ;
Liu, C. Y. ;
Chen, Y. ;
Yang, Z. X. ;
Huang, H. F. ;
Wei, L. L. ;
Li, Y. B. ;
Qi, H. Q. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 739 :114-121