Enhanced elevated-temperature mechanical properties of hot-rolled Al-Cu alloys: effect of zirconium addition and homogenization

被引：11

作者：

Cui, Liying ^{[1
]}

Liu, Kun ^{[1
]}

Zhang, Zhan ^{[1
]}

Chen, X. -Grant ^{[1
]}

机构：

[1] Univ Quebec Chicoutimi, Dept Appl Sci, Saguenay, PQ G7H 2B1, Canada

来源：

JOURNAL OF MATERIALS SCIENCE | 2023年 / 58卷 / 27期

基金：

加拿大自然科学与工程研究理事会;

关键词：

ZR-TI ALLOYS; RECRYSTALLIZATION BEHAVIOR; PRECIPITATION EVOLUTION; CREEP RESISTANCE; MG; SC; MN; DEFORMATION; STRENGTH; DISPERSOIDS;

D O I：

10.1007/s10853-023-08728-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructural evolution and mechanical properties of hot-rolled Al-Cu 2022 alloys were investigated to explore the effects of Zr addition and different homogenization procedures. Two-step low-temperature homogenization promoted a denser and finer distribution of Al3Zr particles in the Zr-containing alloy, which provided heterogeneous nucleation sites for & theta;& PRIME;& PRIME;/& theta;& PRIME; precipitates during the T7 treatment, increasing their number density. The Zr-containing T7-treated alloy exhibited a higher tensile strength than the base alloy. The Zr-containing alloy thermally exposed at 300 & DEG;C for 100 h still exhibited a higher tensile strength than the base alloy at both room and elevated temperatures. The Zr-containing alloy with two-step homogenization showed the highest yield strength of 157 and 114 MPa at 20 and 300 & DEG;C, respectively, which was 26 and 20% higher than that of the base alloy with conventional one-step homogenization. The strengthening mechanisms of the T7/T7A-treated alloys were quantitatively analyzed based on their microstructural characteristics. The predicted yield strengths agreed well with the experimentally measured values.

引用

页码：11424 / 11439

页数：16

共 46 条

[1] Role of Mg2Si precipitates size in determining the ductility of A357 cast alloy [J].

Asghar, Ghulam ;

Peng, Liming ;

Fu, Penghuai ;

Yuan, Lingyang ;

Liu, Yue .

MATERIALS & DESIGN, 2020, 186

[2] Aging behavior and strengthening mechanisms of coarsening resistant metastable θ′ precipitates in an Al-Cu alloy [J].

Bahl, Sumit ;

Xiong, Lianghua ;

Allard, Lawrence F. ;

Michi, Richard A. ;

Poplawsky, Jonathan D. ;

Chuang, Andrew Chihpin ;

Singh, Dileep ;

Watkins, Thomas R. ;

Shin, Dongwon ;

Haynes, J. Allen ;

Shyam, Amit .

MATERIALS & DESIGN, 2021, 198

[3] Experimental investigation on the post-fire mechanical properties of structural aluminum alloys 6061-T6 and 7075-T73 [J].

Chen, Zhihua ;

Lu, Jie ;

Liu, Hongbo ;

Liao, Xiangwei .

THIN-WALLED STRUCTURES, 2016, 106 :187-200

[4] Microstructure and mechanical properties of novel Al-Cu-Mg-Zn lightweight entropy alloys for elevated-temperature applications [J].

Cui, Liying ;

Zhang, Zhan ;

Chen, X. -Grant .

MATERIALS CHARACTERIZATION, 2023, 200

[5] Development of lightweight Al-based entropy alloys for elevated temperature applications [J].

Cui, Liying ;

Zhang, Zhan ;

Chen, X. -Grant .

JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 938

[6]

Dieter G.E., 1986, Mechanical Metallurgy

[7] Recent developments in advanced aircraft aluminium alloys [J].

Dursun, Tolga ;

Soutis, Costas .

MATERIALS & DESIGN, 2014, 56 :862-871

[8] Assembling dual precipitates to improve high-temperature resistance of multi-microalloyed Al-Cu alloys [J].

Gao, Y. H. ;

Cao, L. F. ;

Kuang, J. ;

Zhang, J. Y. ;

Liu, G. ;

Sun, J. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 822

[9] Stabilizing nanoprecipitates in Al-Cu alloys for creep resistance at 300°C [J].

Gao, Y. H. ;

Yang, C. ;

Zhang, J. Y. ;

Cao, L. F. ;

Liu, G. ;

Sun, J. ;

Ma, E. .

MATERIALS RESEARCH LETTERS, 2019, 7 (01) :18-25

[10] A new approach for improving the elevated-temperature strength and ductility of Al-Cu-Mg-Si alloys with minor amounts of dual-phased submicron/nanosized TiB2-TiC particles [J].

Gao, Yu-Yang ;

Qiu, Feng ;

Zhao, Qing-Long ;

Jiang, Qi-Chuan .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 764

← 1 2 3 4 5 →