深冷处理对15%SiCp/2009铝基复合材料组织与力学性能的影响

doi:10.13251/j.issn.0254-6051.2022.09.012

金属热处理 ›› 2022, Vol. 47 ›› Issue (9): 65-70.DOI: 10.13251/j.issn.0254-6051.2022.09.012

深冷处理对15%SiC_p/2009铝基复合材料组织与力学性能的影响

潘冉¹, 刘宝胜¹, 曾元松¹, 曲海涛¹, 王东², 慕延宏¹

1.中国航空制造技术研究院, 北京 100024;
2.中国科学院金属研究所, 辽宁沈阳 110016

收稿日期:2022-05-31 修回日期:2022-07-10 发布日期:2022-10-18
作者简介:潘冉(1988—),男,高级工程师,博士,主要研究方向为铝合金/铝基复材成形控性,E-mail:bkdpanran@163.com
基金资助:
国防科技科研院所稳定支持项目(20190101);北京市自然科学基金(3214053)

Effect of cryogenic treatment on microstructure and mechanical properties of 15%SiC_p/2009 aluminum matrix composite

Pan Ran¹, Liu Baosheng¹, Zeng Yuansong¹, Qu Haitao¹, Wang Dong², Mu Yanhong¹

1. AVIC Manufacturing Technology Institute, Beijing 100024, China;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China

Received:2022-05-31 Revised:2022-07-10 Published:2022-10-18

摘要/Abstract

摘要： 采用硬度测试、X射线衍射物相分析、力学性能测试和透射电镜(TEM)观测等方式,研究长时间深冷处理对固溶-时效处理的碳化硅颗粒增强铝基复合材料组织与性能的影响,并从材料组织角度分析了深冷处理改善碳化硅颗粒增强铝基复合材料力学性能的机理。结果表明,与未经深冷处理的时效态铝基复合材料相比,经深冷处理的铝基复合材料试样提前2 h达到硬度峰值,约211.7 HV0.1,且整个时效阶段硬度均高于未深冷处理试样;时效早期(欠时效)阶段,经深冷时效处理的颗粒增强铝基复合材料试样组织中存在细小且均匀分布的针状析出相,而对比时效试样组织未见明显析出现象; 过时效阶段中,深冷-时效试样与时效试样均存在大尺寸析出相,且后者析出相尺寸、分布明显不均匀,但两者的力学性能随时效时间的延长而趋于近乎一致,说明深冷处理的影响降低。

关键词: 颗粒增强铝基复合材料, 深冷处理, 时效, 显微组织

Abstract: Effect of long time cryogenic treatment on microstructure and mechanical properties of solution treated and aged SiC particles reinforced aluminum matrix composite was studied by means of hardness tests, X-ray diffraction analysis, mechanical tests and transmission electron microscope (TEM) observation. The mechanism of cryogenic treatment improving mechanical properties of the tested composite was analyzed in terms of microstructure. The results show that the hardness of the aged aluminum matrix composite with cryogenic treatment reaches the peak value (about 211.7 HV0.1) by 2 h earlier than that without cryogenic treatment. During the whole aging stages, the hardness of aged specimens with cryogenic treatment is higher than that without cryogenic treatment. During the under-aging stage, there are fine and uniformly distributed needle-like precipitates in microstructure of the specimens with cryogenic treatment, which is not apparent for that without cryogenic treatment. During the over-aging stage, large-size precipitates appear in both groups of the specimens with and without cryogenic treatment, the precipitate size and distribution are obviously uneven in that without cryogenic treatment, but the mechanical properties of both groups tend to be almost the same with the increase of aging time, as the effect of cryogenic treatment on mechanical properties of aluminum matrix composites is declined.

Key words: particle-reinforced aluminum matrix composite, cryogenic treatment, aging, microstructure

中图分类号:

TG156

潘冉, 刘宝胜, 曾元松, 曲海涛, 王东, 慕延宏. 深冷处理对15%SiC_p/2009铝基复合材料组织与力学性能的影响[J]. 金属热处理, 2022, 47(9): 65-70.

Pan Ran, Liu Baosheng, Zeng Yuansong, Qu Haitao, Wang Dong, Mu Yanhong. Effect of cryogenic treatment on microstructure and mechanical properties of 15%SiC_p/2009 aluminum matrix composite[J]. Heat Treatment of Metals, 2022, 47(9): 65-70.

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深冷处理对15%SiC_p/2009铝基复合材料组织与力学性能的影响

Effect of cryogenic treatment on microstructure and mechanical properties of 15%SiC_p/2009 aluminum matrix composite

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深冷处理对15%SiCp/2009铝基复合材料组织与力学性能的影响

Effect of cryogenic treatment on microstructure and mechanical properties of 15%SiCp/2009 aluminum matrix composite

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深冷处理对15%SiC_p/2009铝基复合材料组织与力学性能的影响

Effect of cryogenic treatment on microstructure and mechanical properties of 15%SiC_p/2009 aluminum matrix composite