Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy
Ding, Wanwu; Xu, Chen; Zhang, Haixia; Zhao, Wenjun
2020-03
Source PublicationMATERIALS RESEARCH EXPRESS
Volume7Issue:3
AbstractThe physical characters that belong to hypo-eutectic Al-Si alloys are affected by certain important factors including the dimension, distribution together with structure of eutectic Si crystals together with primary alpha-Al. In this paper, A356-x Al-5Ti-0.62C-1.07La (x = 0, 4, 5, 6, 7 wt%) alloys are was prepared by mechanical stirring. The effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructures and mechanical properties of A356 alloy are investigated. Results show that the primary alpha-Al was significantly refined by Al-5Ti-0.62C-1.07La intermediate alloy. The secondary dendrite arm space (SDAS) of unrefined alpha-Al is approximately 40 mu m. When the substance of Al-5Ti-0.62C-1.07La intermediate alloy is 6 wt%, SDAS declines to 10 mu m. In addition, the component part of eutectic Si turns from thick acicular/schistose to short rod-like together with a section of pellets. Adding 6 wt% Al-5Ti-0.62C-1.07La intermediate alloy, A356-T6 alloy obtained the best tensile function and hardness. The ultimate tensile strength (UTS), elongation (El) together with Vickers hardness (HV) are 183.5 MPa, 8.2% and 62.3, which is increased by 30.3%, 95.2% and 38.1%, respectively. Furthermore, the variation in mechanical properties change with the development of micro-structure.
KeywordA356 alloy Al-Ti-C-La intermediate alloy microstructure heat treatment mechanical properties
DOI10.1088/2053-1591/ab80ec
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51661021] ; Key Research and Development Projects of Gansu Province[18YF1GA061] ; China Postdoctoral Science Foundation[2019M653896XB]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000522985200001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64190
Collection材料科学与工程学院
土木工程学院
Corresponding AuthorDing, Wanwu
AffiliationLanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
First Author AffilicationColl Mat Sci & Engn
Corresponding Author AffilicationColl Mat Sci & Engn
First Signature AffilicationColl Mat Sci & Engn
Recommended Citation
GB/T 7714
Ding, Wanwu,Xu, Chen,Zhang, Haixia,et al. Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy[J]. MATERIALS RESEARCH EXPRESS,2020,7(3).
APA Ding, Wanwu,Xu, Chen,Zhang, Haixia,&Zhao, Wenjun.(2020).Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy.MATERIALS RESEARCH EXPRESS,7(3).
MLA Ding, Wanwu,et al."Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy".MATERIALS RESEARCH EXPRESS 7.3(2020).
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