时效温度对含Sc A356合金组织与力学性能的影响

doi:10.13251/j.issn.0254-6051.2025.11.030

金属热处理 ›› 2025, Vol. 50 ›› Issue (11): 217-225.DOI: 10.13251/j.issn.0254-6051.2025.11.030

时效温度对含Sc A356合金组织与力学性能的影响

汤江涛^1,2,3, 冯丽⁴, 姜岳峰^1,3, 梁田^1,3, 马颖澈^1,3

1.中国科学院金属研究所中国科学院核用材料与安全评价重点实验室, 辽宁沈阳 110016;
2.沈阳化工大学材料科学与工程学院, 辽宁沈阳 110142;
3.中国科学院金属研究所师昌绪创新材料研究中心, 辽宁沈阳 110016;
4.沈阳职业技术学院电气工程学院, 辽宁沈阳 110045

收稿日期:2025-06-09 修回日期:2025-09-28 发布日期:2025-12-16
通讯作者: 梁田,研究员,博士,E-mail:tliang@imr.ac.cn
作者简介:汤江涛(1995—),男,硕士研究生,主要研究方向为铝合金,E-mail:1483640255@qq.com。
基金资助:
广西创新驱动发展专项资金(桂科AA22068084-2)

Effect of aging temperature on microstructure and mechanical properties of A356 alloy containing Sc

Tang Jiangtao^1,2,3, Feng Li⁴, Jiang Yuefeng^1,3, Liang Tian^1,3, Ma Yingche^1,3

1. Key Laboratory of Nuclear Materials and Safety Evaluation, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China;
2. School of Materials Engineering and Science, Shenyang University of Chemical Technology, Shenyang Liaoning 110142, China;
3. Master Changxu Innovative Materials Research Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China;
4. School of Electrical Engineering, Shenyang Polytechnic College, Shenyang Liaoning 110045, China

Received:2025-06-09 Revised:2025-09-28 Published:2025-12-16

摘要/Abstract

摘要： 通过对添加0.4%Sc的A356合金压铸试样进行540 ℃×6 h固溶处理及不同温度(100、140、180、220 ℃)下4 h的时效处理,系统研究了时效温度对合金显微组织与力学性能的影响。结果表明,经T6热处理后,共晶硅由压铸态的团簇状纤维/短棒状转变为弥散分布的球状。随着时效温度升高,共晶硅平均尺寸先减小后增大,在180 ℃时达到最小,平均面积5.47 μm²,平均长径10.45 μm,同时含Sc析出相的数量最多(面积分数1.98%)。合金的抗拉强度和伸长率随时效温度升高均呈现先下降后上升再降低的趋势,在180 ℃时效时达到最优值,分别为274 MPa和8.50%。断口分析表明,不同时效温度下A356合金的拉伸断口边部分布着大量断裂的共晶硅。EBSD-KAM分析显示,应力集中主要发生在共晶硅富集区。

关键词: Al-Si-Mg合金, 时效处理, 显微组织, 力学性能

Abstract: Effect of aging temperature on the microstructure and mechanical properties of A356 alloy with 0.4%Sc was systematically investigated by subjecting die-cast specimens to solution treatment at 540 ℃ for 6 h followed by aging at different temperatures (100, 140, 180, and 220 ℃) for 4 h. The results show that after T6 heat treatment, the eutectic silicon transforms from clustered fibrous/short rod-like structures in die-cast state to dispersed spheroidal particles. As the aging temperature increases, the average size of the eutectic silicon first decreases and then increases, reaching the minimum at 180 ℃ with an average area of 5.47 μm² and an average length diameter of 10.45 μm. Meanwhile, the amount of Sc-containing precipitates is the highest at this aging temperature (area fraction of 1.98%). Both the tensile strength and elongation of the alloy first decrease, then increase, and finally decrease again with the increase of aging temperature, reaching optimal values at aging temperature of 180 ℃, which are 274 MPa and 8.50%, respectively. Fracture analysis indicates that tensile fracture of the A356 alloy exhibits a dense distribution of fractured eutectic silicon at different aging temperatures. EBSD-KAM analysis reveals that stress concentration primarily occurs in eutectic silicon-rich regions.

Key words: Al-Si-Mg alloy, aging treatment, microstructure, mechanical properties

中图分类号:

TG146.2

汤江涛, 冯丽, 姜岳峰, 梁田, 马颖澈. 时效温度对含Sc A356合金组织与力学性能的影响[J]. 金属热处理, 2025, 50(11): 217-225.

Tang Jiangtao, Feng Li, Jiang Yuefeng, Liang Tian, Ma Yingche. Effect of aging temperature on microstructure and mechanical properties of A356 alloy containing Sc[J]. Heat Treatment of Metals, 2025, 50(11): 217-225.

参考文献

[1] 赵杰, 曹喜彪, 张敏红, 等. 铸造缺陷对A356铝合金缸盖疲劳性能的影响[J]. 上海金属, 2015, 37(5): 6-10.
Zhao Jie, Cao Xibiao, Zhang Minhong, et al. Effect of casting defects on the fatigue performance of A356 aluminum alloy cylinder heads[J]. Shanghai Metals, 2015, 37(5): 6-10.
[2] Chomsaeng N, Haruta M, Chairuangsri T, et al. HRTEM and ADF-STEM of precipitates at peak-ageing in cast A356 aluminium alloy[J]. Journal of Alloys and Compounds, 2010, 496(1/2): 478-487.
[3] Yu Y B, Song P Y, Kim S S, et al. Possibility of improving tensile strength of semi-solid processed A356 alloy by a post heat treatment at an extremely high temperature[J]. Scripta Materialia, 1999, 41(7): 767-771.
[4] Birol Y. A novel Al-Ti-B alloy for grain refining Al-Si foundry alloys[J]. Journal of Alloys and Compounds, 2009, 486(1/2): 219-222.
[5] Kumar G S V, Murty B S, Chakraborty M. Development of Al-Ti-C grain refiners and study of their grain refining efficiency on Al and Al-7Si alloy[J]. Journal of Alloys and Compounds, 2005, 396(1/2): 143-150.
[6] Flood S C, Hunt J D. Modification of Al-Si eutectic alloys with Na[J]. Metal Science, 1981, 15(7): 287-294.
[7] Xu C, Wang F, Mudassar H, et al. Effect of Sc and Sr on the eutectic Si morphology and tensile properties of Al-Si-Mg alloy[J]. Journal of Materials Engineering and Performance, 2017, 26(4): 1605-1613.
[8] Shabestari S G, Miresmaeili S M, Boutorabi S M A. Effects of Sr-modification and melt cleanliness on melt hydrogen absorption of 319 aluminium alloy[J]. Journal of Materials Science, 2003, 38(9): 1901-1907.
[9] Costa S, Puga H, Barbosa J, et al. The effect of Sc additions on the microstructure and age hardening behaviour of as cast Al-Sc alloys[J]. Materials & Design, 2012, 42: 347-352.
[10] Elagin V I, Zakharov V V, Rostova T D. Scandium-alloyed aluminum alloys[J]. Metal Science and Heat Treatment, 1992, 34(1): 37-45.
[11] Marzouk M, Jain M, Shankar S. Effect of Sr-modification on the bendability of cast aluminum alloy A356 using digital image correlation method[J]. Materials Science and Engineering A, 2014, 598: 277-287.
[12] 姜峰, 索忠源, 关鲜洪, 等. 热处理对混合稀土变质A356合金组织及力学性能的影响[J]. 特种铸造及有色合金, 2020, 40(12): 1414-1417.
Jiang Feng, Suo Zhongyuan, Guan Xianhong, et al. Effect of heat treatment on microstructure and mechanical properties of A356 alloy modified by mixed rare earth[J]. Special Casting & Nonferrous Alloys, 2020, 40(12): 1414-1417.
[13] 答建成, 周细应, 彭以阳, 等. 固溶时效工艺对A356铝合金轮毂组织与性能的影响[J]. 热加工工艺, 2016, 45(14): 184-186.
Da Jiancheng, Zhou Xiying, Peng Yiyang, et al. Effect of solution and aging treatment on microstructure and properties of A356 aluminum alloy wheel hub[J]. Hot Working Technology, 2016, 45(14): 184-186.
[14] 袁昌文, 李靖, 王启航, 等. 热处理工艺对变质后A356合金组织及性能的影响[J]. 铸造技术, 2023, 44(5): 434-442.
Yuan Changwen, Li Jing, Wang Qihang, et al. Effect of heat treatment process on microstructure and properties of modified A356 alloy[J]. Foundry Technology, 2023, 44(5): 434-442.
[15] Liu C H, Chen J H, Li C, et al. Multiple silicon nanotwins formed on the eutectic silicon particles in Al-Si alloys[J]. Scripta Materialia, 2011, 64(4): 339-342.
[16] Jia Q, Rometsch P, Kürnsteiner P, et al. Selective laser melting of a high strength AlMnSc alloy: Alloy design and strengthening mechanisms[J]. Acta Materialia, 2019, 171: 108-118.
[17] Sabau A S, Viswanathan S. Microporosity prediction in aluminum alloy[J]. Castings Metallurgical and Materials Transactions B, 2002, 33(4): 243-255.
[18] Zhao Z, Duan B, Ying J, et al. Effect of Al addition on microstructure and tensile properties of Mg-8Li-3Al alloy[J]. JOM, 2021, 73(8): 2558-2564.
[19] Haghdadi N, Zarei-Hanzaki A, Roostaei A A, et al. Evaluating the mechanical properties of a thermomechanically processed unmodified A356 Al alloy employing shear punch testing method[J]. Materials & Design, 2013, 43: 419-425.
[20] Senkov O N, Shagiev M R, Senkova S V, et al. Precipitation of Al₃(Sc, Zr) particles in an Al-Zn-Mg-Cu-Sc-Zr alloy during conventional solution heat treatment and its effect on tensile properties[J]. Acta Materialia, 2008, 56(15): 3723-3738.
[21] 刘宁, 马力, 刘爱军, 等. 热处理对含钪6061铝合金组织和力学性能的影响[J]. 材料热处理学报, 2020, 41(8): 7-18.
Liu Ning, Ma Li, Liu Aijun, et al. Effect of heat treatment on microstructure and mechanical properties of Sc-containing 6061 aluminum alloy[J]. Transactions of Materials and Heat Treatment, 2020, 41(8): 7-18.
[22] Wang Q G, Caceres C H, Griffiths J R. Damage by eutectic particle cracking in aluminum casting alloys A356/357[J]. Metallurgical and Materials Transactions A, 2003, 34(12): 2901-2912.
[23] Whitmore L, Ahmadi M R, Stockinger M, et al. Microstructural investigation of thermally aged nickel-based superalloy 718Plus[J]. Materials Science and Engineering A, 2014, 594: 253-259.

时效温度对含Sc A356合金组织与力学性能的影响

Effect of aging temperature on microstructure and mechanical properties of A356 alloy containing Sc

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