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Space station based experimental research on thermophysical properties and solidification mechanisms of Fe-19%Si alloy
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L. Hu, W.J. Xie, Z.X. Wan, Q.C. Zhong, Y.H. Jing, H.P. Wang*
Review of Materials Research | 2025, 1(1) : 100005
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Review of Materials Research | 2025, 1(1): 100005
• FLASH REPORT •
Space station based experimental research on thermophysical properties and solidification mechanisms of Fe-19%Si alloy
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L. Hu, W.J. Xie, Z.X. Wan, Q.C. Zhong, Y.H. Jing, H.P. Wang*
Affiliations
  • School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
Published: 2025-04-07 doi: 10.1016/j.revmat.2025.100005
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The thermophysical properties and rapid solidification mechanism of Fe-19 wt%Si alloy were investigated by electrostatic levitation aboard China Space Station and terrestrial drop tube techniques. All the solidification events neither favour the retention of the metastable Fe2Si phase nor induce the decomposition of the Fe5Si3 phase. The density was determined to be a linear decreasing relationship with temperature, in which the liquid density at eutectic temperature was determined to be 6.19 g cm-3. The surface tension and viscosity were measured to be 1.44 N m-1 and 29.8 mPa s at liquid state. Because space environment suppresses the gravity-driven liquid flow required for solidification feeding, the space shrinkage was significantly higher than the ground condition. The Fe3Si and Fe2Si phases only displayed a divorced eutectic growth mode in the ground-based experiments, while the coupled growth appears under the space condition due to the suppression of long-range solute transport. The crystal grain size of Fe3Si phase in space condition was larger than that on the ground.

L. Hu, W.J. Xie, Z.X. Wan, Q.C. Zhong, Y.H. Jing, H.P. Wang. Space station based experimental research on thermophysical properties and solidification mechanisms of Fe-19%Si alloy[J]. Review of Materials Research, 2025 , 1 (1) : 100005 - . DOI: 10.1016/j.revmat.2025.100005
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Funding
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  • National Natural Science Foundation of China(52088101; 52471048)
  • Space Utilization Program of China Manned Space Project(KJZ-YY-NCL-1-03)
  • Shaanxi Natural Science Fund for Distinguished Young Scholar(2023JCJQ30)
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Year 2025 volume 1 Issue 1
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Article Info
doi: 10.1016/j.revmat.2025.100005
  • Receive Date：2025-03-21
  • Online Date：2026-06-10
  • Published：2025-04-07
Article Data
Affiliations
History
  • Received：2025-03-21
  • Revised：2025-04-01
  • Accepted：2025-04-01
Funding
National Natural Science Foundation of China(52088101; 52471048)
Space Utilization Program of China Manned Space Project(KJZ-YY-NCL-1-03)
Shaanxi Natural Science Fund for Distinguished Young Scholar(2023JCJQ30)
Affiliations
    School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China

Corresponding:

* E-mail address: (H.P. Wang).
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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