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Rapid Solidification of Invar Alloy
He, Hanxin1; Yao, Zhirui2; Li, Xuyang3; Xu, Junfeng2
Department空间光学技术研究室
2024-01
Source PublicationMaterials
ISSN19961944
Volume17Issue:1
Contribution Rank3
Abstract

The Invar alloy has excellent properties, such as a low coefficient of thermal expansion, but there are few reports about the rapid solidification of this alloy. In this study, Invar alloy solidification at different undercooling (ΔT) was investigated via glass melt-flux techniques. The sample with the highest undercooling of ΔT = 231 K (recalescence height 140 K) was obtained. The thermal history curve, microstructure, hardness, grain number, and sample density of the alloy were analyzed. The results show that with the increase in solidification undercooling, the XRD peak of the sample shifted to the left, indicating that the lattice constant increased and the solid solubility increased. As the solidification of undercooling increases, the microstructure changes from large dendrites to small columnar grains and then to fine equiaxed grains. At the same time, the number of grains also increases with the increase in the undercooling. The hardness of the sample increases with increasing undercooling. If ΔT ≥ 181 K (128 K), the grain number and the hardness do not increase with undercooling. © 2023 by the authors.

KeywordInvar alloy solidification undercooling hardness
DOI10.3390/ma17010231
Indexed BySCI ; EI
Language英语
WOS IDWOS:001140714800001
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
EI Accession Number20240315384601
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/97160
Collection空间光学技术研究室
Corresponding AuthorXu, Junfeng
Affiliation1.School of Civil Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an; 710055, China;
2.School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an; 710021, China;
3.Xi’an Institute of Optics and Precision Mechanics, Xi’an; 710119, China
Recommended Citation
GB/T 7714
He, Hanxin,Yao, Zhirui,Li, Xuyang,et al. Rapid Solidification of Invar Alloy[J]. Materials,2024,17(1).
APA He, Hanxin,Yao, Zhirui,Li, Xuyang,&Xu, Junfeng.(2024).Rapid Solidification of Invar Alloy.Materials,17(1).
MLA He, Hanxin,et al."Rapid Solidification of Invar Alloy".Materials 17.1(2024).
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