Achieving superior mechanical properties of selective laser melted AlSi10Mg via direct aging treatment

doi:10.1016/j.jmst.2021.07.059

IMR OpenIR

	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
通讯作者	Ni, D. R.(drni@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn)
	2022-05-10
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	108 页码:226-235
摘要	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.
关键词	Additive manufacturing Selective laser melting AlSi10Mg alloy, Heat treatment
资助者	National Key R&D Program of China
DOI	10.1016/j.jmst.2021.07.059
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFB0703104]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000787716200004
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：57[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172630
专题	中国科学院金属研究所
通讯作者	Ni, D. R.; Xiao, B. L.
作者单位	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
推荐引用方式 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.