| Achieving superior mechanical properties of selective laser melted AlSi10Mg via direct aging treatment | |
| Zhang, H.1; Wang, Y.1,2; Wang, J. J.2; Ni, D. R.1; Wang, D.1; Xiao, B. L.1; Ma, Z. Y.1 | |
| Corresponding Author | Ni, D. R.(drni@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn) |
| 2022-05-10 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 108Pages:226-235 |
| Abstract | For additive manufactured aluminum alloys, the inferior mechanical properties along the building direction have been a serious weakness. In this study, an optimized heat treatment was developed as a simple and effective solution. The effects of direct aging on microstructure and mechanical properties along the building direction of AlSi10Mg samples produced via selective laser melting (SLM) were investigated. The results showed that, compared with the conventional heat treatment at elevated temperatures, direct aging at temperatures of 130-190 degrees C could retain the fine grain microstructure of SLM samples and promote further precipitation of Si phase, however, the growth of pores occurred during direct aging. With increasing aging temperature, while finer cell structures were obtained, more and larger pores were developed, resulting in decreased density of the samples. Two types of pore formation mechanisms were identified. Considering the balance between the refinement of cell structure and the growth of pores, aging at 130 degrees C was determined as the optimized heat treatment for SLM AlSi10Mg samples. The tensile strength along the building direction of the 130 degrees C aged sample was increased from 403 MPa to 451 MPa, with relatively high elongation of 6.5%. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Additive manufacturing Selective laser melting AlSi10Mg alloy, Heat treatment |
| Funding Organization | National Key R&D Program of China |
| DOI | 10.1016/j.jmst.2021.07.059 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2017YFB0703104] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000787716200004 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172630 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ni, D. R.; Xiao, B. L. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Shenyang Aerosp Univ, Coll Mat Sci & Engn, 37 Daoyi South Ave, Shenyang 110136, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, H.,Wang, Y.,Wang, J. J.,et al. Achieving superior mechanical properties of selective laser melted AlSi10Mg via direct aging treatment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,108:226-235. |
| APA | Zhang, H..,Wang, Y..,Wang, J. J..,Ni, D. R..,Wang, D..,...&Ma, Z. Y..(2022).Achieving superior mechanical properties of selective laser melted AlSi10Mg via direct aging treatment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,108,226-235. |
| MLA | Zhang, H.,et al."Achieving superior mechanical properties of selective laser melted AlSi10Mg via direct aging treatment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 108(2022):226-235. |
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