Density determination and simulation of Inconel 718 alloy at normal and metastable liquid states
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2018年第3期
论文作者：H.P.Wang C.H.Zheng P.F.Zou S.J.Yang L.Hu B.Wei
文章页码：436 - 439
摘 要：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 × 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.
H.P.Wang，C.H.Zheng，P.F.Zou，S.J.Yang，L.Hu，B.Wei
Department of Applied Physics, Northwestern Polytechnical University
摘 要：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 × 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.
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