The effects of η phases and Al3(Er, Zr) particles pre-precipitation on the hot workability and recrystallization of Al-Zn-Mg-Er-Zr alloy

被引:9
作者
Chen, Jiongshen [1 ]
Rong, Li [1 ]
Huang, Hui [1 ]
Ma, Chenxi [1 ]
Wei, Wu [1 ]
Wen, Shengping [1 ]
Wang, Zezhong [2 ]
Nie, Zuoren [1 ]
机构
[1] Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
[2] Dongfeng Motor Corp, Wuhan 430056, Peoples R China
来源
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 29卷
关键词
Al -Zn -Mg alloy; Pre-precipitation; Al 3 (Er; Zr) particle; Hot workability; Recrystallization; MECHANICAL-PROPERTIES; MICROSTRUCTURAL EVOLUTION; DYNAMIC PRECIPITATION; STIMULATED NUCLEATION; GRAIN-REFINEMENT; 7075; ALUMINUM; BEHAVIOR; DEFORMATION;
D O I
10.1016/j.jmrt.2024.01.223
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper investigates the impact of pre-precipitated eta phases and Al3(Er, Zr) particles on the hot workability and recrystallization behavior of an Al-Zn-Mg-Er-Zr alloy. The optimal pre-precipitation heat treatment prior to hot deformation was obtained by heat treatment under different conditions combined with microstructure analysis. Subsequently, hot compression tests were conducted to establish the processing maps, and the influence of pre-precipitation on the microstructure and the hot workability under various thermal deformation conditions were analyzed. Furthermore, the effect of pre-precipitation of eta phases and Al3(Er, Zr) particles on the recrystallization was studied. The results demonstrate that after the optimized pre-precipitation treatment, a multitude of Al3(Er, Zr) particles (-10 nm) and eta phases (-1 mu m) appeared in the alloy. Through this pre-precipitation treatment, the flow stress was significantly reduced, and the hot workability of the alloy was significantly enhanced, particularly at low temperatures and low deformation rates. Moreover, the pre-precipitated eta phases facilitated recrystallization, refined grains and hence created a more homogeneous microstructure. Concurrently, during the recrystallization process, the precipitated Al3(Er, Zr) particles impeded grain boundary migration, and thus inhibited the growth of recrystallized grains, contributing to grain refinement.
引用
收藏
页码:2414 / 2424
页数:11
相关论文
共 54 条
[1]   Effect of Al3(Sc,Zr) dispersoids on the hot deformation behaviour of 6xxx-series alloys: A physically based constitutive model [J].
Babaniaris, Steven ;
Ramajayam, Mahendra ;
Jiang, Lu ;
Varma, Rameshkumar ;
Langan, Timothy ;
Dorin, Thomas .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 793
[2]   Dynamic softening and microstructural evolution during hot deformation of Al-Cu-Mg-Zr alloys with different homogenization cooling rates [J].
Bo, Guo-Wei ;
Wang, Guan ;
Jiang, Fu-Lin ;
Liu, Can ;
Chen, Rong ;
Zhang, Hui .
RARE METALS, 2021, 40 (03) :626-634
[3]   Revealing the influence of pre-precipitation microstructure on hot workability in an Al-Cu-Mg-Zr alloy [J].
Bo, Guowei ;
Jiang, Fulin ;
Dong, Zhaoyu ;
Wang, Guan ;
Zhang, Hui .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 755 :147-157
[4]   COMPARATIVE HOT WORKABILITY OF 7012-ALLOY AND 7075-ALLOY AFTER DIFFERENT PRETREATMENTS [J].
CERRI, E ;
EVANGELISTA, E ;
FORCELLESE, A ;
MCQUEEN, HJ .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 197 (02) :181-198
[5]  
Chen JS, 2023, RARE METAL MAT ENG, V52, P2453
[6]   Evolution of Grain Structure and Dynamic Precipitation during Hot Deformation in a Medium-Strength Al-Zn-Mg-Er-Zr Aluminum Alloy [J].
Chen, Jiongshen ;
Rong, Li ;
Wei, Wu ;
Qi, Peng ;
Wang, Meng ;
Wang, Zezhong ;
Zhou, Li ;
Huang, Hui ;
Nie, Zuoren .
MATERIALS, 2023, 16 (12)
[7]   The role of various Zr additions in static softening behavior of Al-Zn-Mg-Cu alloys during interval holding of double-stage hot deformation [J].
Chen, Kunyang ;
Tang, Jie ;
Jiang, Fulin ;
Teng, Jie ;
Fu, Dingfa ;
Zhang, Hui .
JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 792 :1112-1121
[8]   Effect of heat treatment on hot deformation behavior and microstructure evolution of 7085 aluminum alloy [J].
Chen, Songyi ;
Chen, Kanghua ;
Peng, Guosheng ;
Chen, Xuehai ;
Ceng, Qinghua .
JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 537 :338-345
[9]   The mechanism of comprehensive properties enhancement in Al-Zn-Mg-Cu alloy via novel thermomechanical treatment [J].
Chen, Zhiguo ;
Yuan, Zhengui ;
Ren, Jieke .
JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 828
[10]   LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE APPLICATIONS [J].
COLE, GS ;
SHERMAN, AM .
MATERIALS CHARACTERIZATION, 1995, 35 (01) :3-9