Effects of Scandium Content and Solution Process on Microstructure and Properties of Al-Zn-Mg-Cu-Sc-Zr Alloy

ZHANG Wei; ZHU Biwu; XIAO Gang; LIU Xiao; ZHAN Haihong; YANG Qinwen

doi:10.11973/jxgccl202312002

Materials and Mechanical Engineering > 2023 > 47(12): 6-11,18. > DOI: 10.11973/jxgccl202312002

ZHANG Wei, ZHU Biwu, XIAO Gang, LIU Xiao, ZHAN Haihong, YANG Qinwen. Effects of Scandium Content and Solution Process on Microstructure and Properties of Al-Zn-Mg-Cu-Sc-Zr Alloy[J]. Materials and Mechanical Engineering, 2023, 47(12): 6-11,18. DOI: 10.11973/jxgccl202312002

Citation:

PDF (5673 KB)

Effects of Scandium Content and Solution Process on Microstructure and Properties of Al-Zn-Mg-Cu-Sc-Zr Alloy

1. Hunan Engineering Research Center of Forming Technology and Damage Resistance Evaluation for High Efficiency LightAlloy Components, School of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China;
2. Jiangxi Copper Technology Research Institute Co., Ltd., Nanchang 330096, China;
3. College of Mechanical and VehicleEngineering, Hunan University, Changsha 410083, China;
4. Jiangxi KMAX Industrial Co., Ltd., Nanchang 330100, China;
5. Light Alloys Research Institute, Central South University, Changsha 410083, China

More Information

Received Date: October 07, 2022
Revised Date: September 22, 2023

Graphical Abstract

Abstract

Abstract

Al-Zn-Mg-Cu-Sc-Zr alloys with scandium mass fractions of 0.02%, 0.07% and 0.12% were designed. The effects of scandium content and solution temperature (450-490 ℃) and time (0.5-5 h) on the microstructure and properties of as-cast alloys were studied. The results show that with the increase of scandium content, the grains of the alloy were refined, but the coarse second phase content at grain boundaries increased; the hardness decreased. After solution at 470 ℃ for 1 h, the hardness of the alloy with 0.02wt% scandium was the highest. Continuously increasing the solution temperature or prolonging the solution time could lead to the increase of grain size, and prolonging the solution time could also lead to the aggregation of blocky second phases at the grain boundary; the hardness decreased.
- aluminum alloy,
- scandium content,
- solution process,
- hardness,
- microstructure

FullText(HTML)

References (24)

References

[1]	ZHANG X M. DENG Y L. YONG Z.Development of high strength aluminum alloys and processing techniques for the materials[J].Acta Metallurgica Sinica. 2015. 51:257-271.
[2]	LI G F. ZHANG X M. ZHU H F.Effect of minor Er and Y additions to Al-Zn-Mg-Cu-Zr alloy on homogenizing behavior[J].Journal of Aeronautical Materials. 2010. 30(6):1-6.
[3]	LI C M. CHEN Z Q. CENG N P. et al.Mechanical properties of 7055 ultrahigh-strength and ultrahigh-ductility aluminum alloy[J].Heat Treatment of Metals. 2008. 33(1):100-104.
[4]	陈小明. 宋仁国. 李杰.7xxx系铝合金的研究现状及发展趋势[J].材料导报. 2009. 23(3):67-70. CHEN X M. SONG R G. LI J.Current research status and development trends of 7xxx series aluminum alloys[J].Materials Review. 2009. 23(3):67-70.
[5]	丛福官. 赵刚. 田妮. 等.7×××系超高强铝合金的强韧化研究进展及发展趋势[J].轻合金加工技术. 2012. 40(10):23-33. CONG F G. ZHAO G. TIAN N. et al.Research progress and development trend of strengthening-toughening of ultra-high strength 7×××aluminum alloy[J].Light Alloy Fabrication Technology. 2012. 40(10):23-33.
[6]	戴晓元. 夏长清. 刘昌斌.钪对Al-Zn-Mg-Cu-Zr合金组织性能的影响[J].稀有金属材料与工程. 2006. 35(6):913-916. DAI X Y. XIA C Q. LIU C B.Effect of Sc addition on microstructures and mechanical properties of Al-Zn-Mg-Cu-Zr alloys[J].Rare Metal Materials and Engineering. 2006. 35(6):913-916.
[7]	XIAO Q F. HUANG J W. JIANG Y G. et al.Effects of minor Sc and Zr additions on mechanical properties and microstructure evolution of Al-Zn-Mg-Cu alloys[J].Transactions of Nonferrous Metals Society of China. 2020. 30(6):1429-1438.
[8]	RIDDLE Y W. SANDERS T H Jr.A study of coarsening. recrystallization. and morphology of microstructure in Al-Sc-(Zr)-(Mg) alloys[J].Metallurgical and Materials Transactions A. 2004. 35(1):341-350.
[9]	VAN DALEN M E. SEIDMAN D N. DUNAND D C.Creep- and coarsening properties of Al-0.06at.% Sc-0.06at.% Ti at 300-450℃[J].Acta Materialia. 2008. 56(16):4369-4377.
[10]	LI J. HE Y Y. ZHAO X. et al.Evolution of microstructure and mechanical properties of Al-Zn-Mg-Cu alloy by extrusion and heat treatment[J].Coatings. 2022. 12(6):787.
[11]	TEKELI S. SIMSEK I. SIMSEK D. et al.Effects of different solid solution temperatures on microstructure and mechanical properties of the AA7075 alloy after T6 heat treatment[J].High Temperature Materials and Processes. 2019. 38(2019):892-896.
[12]	张兆刚. 张存生. 赵国群. 等.固溶工艺对7055铝合金组织和性能的影响[J].中南大学学报(自然科学版). 2021. 52(9):3143-3152. ZHANG Z G. ZHANG C S. ZHAO G Q. et al.Effect of solid solution process on microstructure and properties of 7055 aluminum alloy[J].Journal of Central South University (Science and Technology). 2021. 52(9):3143-3152.
[13]	王孝国. 李秋书. 杨光印. 等.固溶时效对7K01铝合金组织和硬度及电导率的影响[J].特种铸造及有色合金. 2019. 39(5):480-482. WANG X G. LI Q S. YANG G Y. et al.Effects of solution and ageing treatment on microstructure. micro-hardness and electrical conductivity of 7K01 Al alloy[J].Special Casting & Nonferrous Alloys. 2019. 39(5):480-482.
[14]	张洪静. 黄晓冬. 孙有政. 等.固溶温度对7050铝合金锻板组织和性能的影响[J].材料热处理学报. 2020. 41(11):46-52. ZHANG H J. HUANG X D. SUN Y Z. et al.Effect of solid solution temperature on microstructure and properties of 7050 aluminum alloy forging plate[J].Transactions of Materials and Heat Treatment. 2020. 41(11):46-52.
[15]	曾苏民.影响铝合金固溶保温时间的多因素相关规律[J].中国有色金属学报. 1999. 9(1):79-86. ZENG S M.Disciplines of multiple factors affecting solution treating of aluminum alloy[J].The Chinese Journal of Nonferrous Metals. 1999. 9(1):79-86.
[16]	LIU C Y. TENG G B. MA Z Y. et al.Effects of Sc and Zr microalloying on the microstructure and mechanical properties of high Cu content 7xxx Al alloy[J].International Journal of Minerals. Metallurgy and Materials. 2019. 26(12):1559-1569.
[17]	ELAGIN V I. ZAKHAROV V V. ROSTOVA T D.Scandium-alloyed aluminum alloys[J].Metal Science and Heat Treatment. 1992. 34(1):37-45.
[18]	XU G F. NIE Z. JIN T. et al. Microstructure and properties of Al-4Cu alloy containing Sc[J]. Transactions of Nonferrous Metals Society of China. 2004. 14(1): 63-66.
[19]	李亨. 唐锴. 王汉. 等.Al-Zn-Mg-Cu-Sc-Zr合金均匀化过程中的析出特性[J].中国有色金属学报. 2021. 31(9):2403-2411. LI H. TANG K. WANG H. et al.Precipitation behavior of Al-Zn-Mg-Cu-Sc-Zr alloy during homogenization process[J].The Chinese Journal of Nonferrous Metals. 2021. 31(9):2403-2411.
[20]	戴晓元.含钪Al-Zn-Mg-Cu-Zr超高强铝合金组织与性能的研究[D].长沙:中南大学. 2008. DAI X Y.Study on microstructure and properties of ultra-high strength Al-Zn-Mg-Cu-Zr aluminum alloy containing scandium[D].Changsha:Central South University. 2008.)
[21]	毛萍莉. 李华祎.固溶处理对Mg-2Zn-3Y合金组织和性能的影响[J].沈阳工业大学学报. 2022. 44(3):270-276. MAO P L. LI H Y.Effect of solid solution treatment on microstructures and properties of Mg-2Zn-3Y alloy[J].Journal of Shenyang University of Technology. 2022. 44(3):270-276.
[22]	ZHANG P. LI S X. ZHANG Z F.General relationship between strength and hardness[J].Materials Science and Engineering:A. 2011. 529:62-73.
[23]	郑子樵.材料科学基础[M].长沙:中南大学出版社. 2005:474-477. ZHENG Z Q.Material science foundation[M].Changsha:Central South University Press. 2005:474-477.
[24]	刘蛟蛟. 武岳. 赖永秋. 等.固溶温度对7B50铝合金组织与性能的影响[J].中国有色金属学报. 2013. 23(11):3100-3106. LIU J J. WU Y. LAI Y Q. et al.Effects of solution temperature on microstructures and properties of 7B50 aluminum alloy[J].The Chinese Journal of Nonferrous Metals. 2013. 23(11):3100-3106.

Cited By

Get Citation

PDF

XML

Article views (13) PDF downloads (1)

Turn off MathJax

Article Contents

Abstract

References

Effects of Scandium Content and Solution Process on Microstructure and Properties of Al-Zn-Mg-Cu-Sc-Zr Alloy

Abstract

References

Catalog

Export File

Citation

Format

Content