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In-situ Si-p/A380 alloy nano micro composite formation through cold spray additive manufacturing and subsequent hot rolling treatment: Microstructure and mechanical properties

文献类型：期刊论文

作者Qiu, Xiang1,2; Tariq, Naeem ul Haq1,3,4; Qi, Lu1,2; Zan, Yu-ning1,2; Wang, Yu-jiang5; Wang, Ji-qiang1; Du, Hao1; Xiong, Tian-ying1
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2019-04-05
卷号780页码:597-606
关键词Cold spray Post spray rolling treatment Microstructure Mechanical properties In-situ composite
ISSN号0925-8388
DOI10.1016/j.jallcom.2018.11.399
通讯作者Wang, Ji-qiang(jqwang11s@imr.ac.cn) ; Xiong, Tian-ying(tyxiong@imr.ac.cn)
英文摘要Cold gas dynamic spray (cold spraying, CS) has emerged as a promising solid state manufacturing technique to fabricate thick metallic deposits with limited risk of oxidation, phase transformations and residual thermal stresses. As-sprayed deposits usually exhibit poor mechanical properties and often require post-spray heat treatments to reduce inter-splat defects. In most of the cases, traditional heat treatments offer limited benefits to rejuvenate the mechanical properties of the deposit. This preliminary work presents an effective way to modify the microstructure and improve the mechanical properties of cold sprayed A380 aluminum alloy. As-sprayed alloy deposits were subjected to hot rolling treatments with different thickness reductions. Results suggest that the hot rolled samples show better strength and ductility compared with their as-sprayed state. Microstructural evolution and resulting mechanical properties, at different processing conditions, were analyzed through optical microscopy (OM), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), high resolution transmission electron microscopy (HRTEM) and tensile tests. Sample with thickness reduction of 40% displayed highest values of ultimate strength (UTS, 420 +/- 2.1 MPa) and elongation (Elf, 5 +/- 2.3%) compared with the corresponding values of as-sprayed (100 +/- 13.4 MPa, 0%) and conventionally heat treated (186 +/- 17 MPa, 0.93 +/- 0.05%) samples. The improvement in mechanical properties of the rolled samples were mainly attributed to the progressive elimination/reduction of inter-splat defects together with in-situ composite microstructure formation. EBSD and HRTEM revealed that in-situ composite structure was formed through progressive refinement and uniform distribution of Si particles in alpha-Al matrix containing coherent theta' precipitates. (C) 2018 Elsevier B.V. All rights reserved.
资助项目National Natural Science Foundation of China[51671205]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000456789000074
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/131380]  
专题金属研究所_中国科学院金属研究所
通讯作者Wang, Ji-qiang; Xiong, Tian-ying
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
3.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
4.Pakistan Inst Engn & Appl Sci, Dept Met & Mat Engn, Islamabad, Pakistan
5.Acad Army Amored Forces, Natl Key Lab Remfg, Beijing 100072, Peoples R China
推荐引用方式
GB/T 7714		 Qiu, Xiang,Tariq, Naeem ul Haq,Qi, Lu,et al. In-situ Si-p/A380 alloy nano micro composite formation through cold spray additive manufacturing and subsequent hot rolling treatment: Microstructure and mechanical properties[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,780:597-606.
APA Qiu, Xiang.,Tariq, Naeem ul Haq.,Qi, Lu.,Zan, Yu-ning.,Wang, Yu-jiang.,...&Xiong, Tian-ying.(2019).In-situ Si-p/A380 alloy nano micro composite formation through cold spray additive manufacturing and subsequent hot rolling treatment: Microstructure and mechanical properties.JOURNAL OF ALLOYS AND COMPOUNDS,780,597-606.
MLA Qiu, Xiang,et al."In-situ Si-p/A380 alloy nano micro composite formation through cold spray additive manufacturing and subsequent hot rolling treatment: Microstructure and mechanical properties".JOURNAL OF ALLOYS AND COMPOUNDS 780(2019):597-606.

入库方式： OAI收割

来源：金属研究所

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