时效处理对高体分SiC<sub>p</sub>/7075Al复合材料力学性能的影响

doi:10.11896/cldb.25030084

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (54655KB)
Export: BibTeX | EndNote (RIS)

Abstract The 7075 aluminum alloy with an average particle size of 12 μm was selected as the matrix alloy, and the SiC particles with an average particle size of 11 μm was selected as the reinforcement. SiC_p/7075Al composite with SiC particle volume fraction of 55% was prepared using the hot isostatic pressing method to investigate the effect of aging treatments at 105 ℃, 125 ℃ and 145 ℃ on the mechanical properties of the composite. The results show that the hardness, bending strength and elastic modulus of the as-fabricated composite are 242.3HBW, 735.8 MPa and 205.3 GPa, respectively. The hardness of the composite aged at 105 ℃ gradually increases as the aging time increases, with the maximum hardness of 318HBW, representing an increment of 31.4% compared to that of the as-fabricated composite. The age-hardening effect of the composite decreases as the aging temperature increases. The stress-strain curves of the composites aged at 105 ℃ and 125 ℃ exhibit a similar trend, showing relatively high and very close bending strengths. The composite aged at 105 ℃ for 21 h has the highest flexural strength of 928 MPa, representing an increment of 26.1% compared to that of the as-fabricated composite. Similarly, the conditional yield strengths (σ_0.01, σ_0.05 and σ_0.1) of the composites aged at 105 ℃ and 125 ℃ increase as the aging time increases. The composite aged at 105 ℃ for 60 h shows better resistance to micro-deformation, with the corresponding σ_0.01, σ_0.05and σ_0.1values being 453.9, 686.6 and 808.6 MPa, respectively, which represent increments of 105.6%,85.8% and 67.0% compared to those of the as-fabricated composite, respectively. The elastic modulus of the aged composites decreases slightly, but it remains at a relatively high level of 192.8 GPa. TEM results indicate that the significant increase in hardness of the 105 ℃-aged composite during the early stage can be attributed to the gradual precipitation of a large number of GP zones in the matrix alloy. Subsequently, the GP zones gradually disappear while the η′ phases precipitate, resulting in the co-existence of the GP zones and the η′ phase in the matrix alloy of the composite aged for 30 h. After aging for 60 h, the precipitates in the matrix alloy are almost entirely η′ phases, with very few η phases. The hardness of the composite increases slowly due to the decreasing number and increasing size of the precipitates during the middle and late stages of the aging process.

Key words： silicon carbide composite hot isostatic pressing aging mechanical property

Published: 10 January 2026 Online: 2026-01-09

CLC number:

TB333

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	CAO Leigang
	ZHOU Quan
	HUANG Lei
	YANG Yue
	CAI Changhong
	LIU Yuan
	CUI Yan

Cite this article:

CAO Leigang,ZHOU Quan,HUANG Lei, et al. Effect of Aging on Mechanical Properties of High-volume-fraction SiC_p/7075Al Composite[J]. Materials Reports, 2026, 40(1): 25030084-8.

URL:

https://www.mater-rep.com/EN/10.11896/cldb.25030084 OR https://www.mater-rep.com/EN/Y2026/V40/I1/25030084

1 Shi W, Wang Y. Hot Working Technology, 2024, 53(24), 17(in Chinese).
师维, 汪勇. 热加工工艺, 2024, 53(24), 17.
2 Liang Q W, Liu C X, Cao L X. et al. Material Sciences, 2022, 12(5), 453 (in Chinese).
梁啟文, 刘春轩, 曹柳絮, 等. 材料科学, 2022, 12(5), 453.
3 Chawla N, Chawla K K. Journal of Materials, 2006, 58, 67.
4 Hong Y, Liu J Q, Wu Y C. Reviews on Advanced Materials Science, 2023, 62(1), 158.
5 Cao L G, Huang L, Zhu M Y, et al. Journal of Netshape Forming Engineering, 2024, 16(4), 28(in Chinese).
曹雷刚, 黄磊, 朱明雨, 等. 精密成形工程, 2024, 16(4), 28.
6 Raghu R, Prathap M J, Ponpichai P, et al. IOP Conference Series: Materials Science and Engineering, 2022, 1219, 012045.
7 Tong H T, Zuo R, Qiu D, et al. Journal of Materials Research and Technology, 2021, 15, 1100.
8 Cui Y, Jin T Z, Cao L G, et al. Journal of Alloys and Compounds, 2016, 681, 233.
9 Cui Y, Liao J J, Cao L G, et al. Journal of Materials Engineering, 2024, 52(4), 110 (in Chinese).
崔岩, 廖家杰, 曹雷刚, 等. 材料工程, 2024, 52(4), 110.
10 Ma G N, Zhu S Z, Wang D, et al. Acta Metallurgica Sinica, 2023, 59(12), 1655(in Chinese).
马国楠, 朱士泽, 王东, 等. 金属学报, 2023, 59(12), 1655.
11 Li S Z, Wang T J, Liu G R, et al. Powder Metallurgy Industry, 2018, 28(3), 29(in Chinese).
李书志, 王铁军, 刘桂荣, 等. 粉末冶金工业, 2018, 28(3), 29.
12 Wen K, Xiong B Q, Zhang Y G, et al. Materials Science and Enginee-ring:A, 2018, 716, 42.
13 Wu C D, Ma K K, Zhang D L, et al. Scientific Reports, 2017, 7, 9589.
14 Liu J. Materials Science Forum, 2006, 519-521, 1233.
15 Berg L K, Gjønnes J, Hansen V, et al. Acta Materialia, 2001, 49(17), 3442.
16 Sha G, Cerezo A. Acta Materialia, 2004, 52(15), 4503.
17 Ma K K, Hu T, Yang H, et al. Acta Materialia, 2016, 103, 153.
18 Dellah M, Bournane M, Ragab K A, et al. Materials and Design, 2013, 50, 606.
19 Zhang S H, Jiang H Y, Fu Z X, et al. Journal of Physics: Conference Series, 2022, 2353, 012006.
20 Pu B W, Lin X B, Li B W, et al. Journal of Materials Science, 2020, 55(14), 6145.
21 Villuendas A, Jorba J, Roca A. Metallurgical and Materials Transactions A, 2014, 45(9), 3857.
22 Song Y Z, Wang W M, Pan F S, et al. Materials Reports, 2006(S1), 416(in Chinese).
宋文远, 王文明, 潘复生, 等. 材料导报, 2006(S1), 416.
23 Vlasveld D P N, Groenewold J, Bersee H E N, et al. Polymer, 2005, 46(16), 6102.
24 Cui Y, Ni H C, Cao L G, et al. Materials Reports, 2019, 33(24), 4126(in Chinese).
崔岩, 倪浩晨, 曹雷刚, 等. 材料导报, 2019, 33(24), 4126.
25 Hsieh C L, Tuan W H. Materials Science and Engineering: A, 2005, 393(1-2), 133.
26 Cui K X, Chang X H, Li X P, et al. Materials Reports, 2012, 26(S2), 401(in Chinese).
崔葵馨, 常兴华, 李希鹏, 等. 材料导报, 2012, 26(S2), 401.
27 Lendvai J. Materials Science Forum Vols, 1996, 217-222, 43.
28 Tang J G, Cheng H, Zhang X M, et al. Transactions of Nonferrous Metals Society of China, 2012, 22(6), 1255.
29 Qi X, Cheng X M, Song R G. Corrosion Engineering, Science and Technology, 2021, 56(7), 668.
30 Gubicza J, Lábár J L, Lendvai J, et al. Journal of Materials Science, 2019, 54(15), 10918.
31 He C D, Ren J P, Xu B. Applied Mechanics and Materials, 2012, 157-158, 331.
32 Yang X B, Liu J Z, Chen J H, et al. Acta Metallurgica Sinica, 2014, 27(6), 1070.
33 Khomutov M, Spasenko A, Sova A, et al. The International Journal of Advanced Manufacturing Technology, 2021, 116(3-4), 847.
34 Chinh N Q, Lendva J, Ping D H, et al. Journal of Alloys ang Compounds, 2004, 378, 52.
35 Cao L G, Zhu M Y, Yang Y, et al. JOM, 2024, 76(9), 5170.
36 Li B, Luo B H, He K J, et al. Journal of Alloys and Compounds, 2015, 649, 95.
37 Cui Y, Dong H Q, Cao L G, et al. Heat Treatment of Metals, 2022, 47(1), 142(in Chinese).
崔岩, 董和谦, 曹雷刚, 等. 金属热处理, 2022, 47(1), 142.