Density determination and simulation of Inconel 718 alloy at normal and metastable liquid states

作者：Wang, H. P.; Zheng, C. H.; Zou, P. F.; Yang, S. J.; Hu, L.; Wei, B.^*

来源：Journal of Materials Science & Technology, 2018, 34(3): 436-439.

DOI：10.1016/j.jmst.2017.10.014

• Undercooling
• Density
• Liquid metal and alloy
• Levitation

The density of liquid Inconel 718 alloy was experimentally measured by electrostatic levitation technique, where the maximum undercooling of 100 K was realized for the commercial sample. The measured density of liquid Inconel 718 alloy is 7.39 g cm(-3) at the liquidus temperature of 1663 K which was confirmed by DSC experiment, with the linear temperature coefficient of -6.89 x 10(-4) g cm(-3) K-1. Correspondingly, four ternary Ni-Cr-Fe compositions were designed to simulate the density of liquid Inconel 718 alloy with 16000 atoms, from which the liquid structure is revealed by pair distribution function. The predicted result shows a remarkable enhancement with the decrease of temperature at the first neighbor distance.

• 出版日期2018-3
• 单位西北工业大学