Macrosegregation and the underlying mechanism in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy

Xin Liu; Guang Feng; Yu Zhou; Qunbo Fan

doi:10.1016/j.pnsc.2019.02.006

Macrosegregation and the underlying mechanism in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy

Xin Liu, Guang Feng, Yu Zhou, Qunbo Fan^*

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

A novel method for the analysis of composition distribution of titanium alloys over a large area (64 mm × 72 mm) was investigated by exploring the original position statistic distribution based on spark spectrum (OPA-SS) in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0-Sn-4.0Zr titanium alloy. The results showed that OPA-SS could characterize the distribution of elements in different positions on the titanium alloy. The macrosegregation of Sn was the most pronounced, with a statistic segregation degree higher than 18%; the macrosegregation of Mo followed with a statistic segregation degree of 10%; the macrosegregation of Al and Fe was relatively milder, lower than 8%. The main reason for the macrosegregation state of the as-cast Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy can be the solute redistribution during liquid solidification and the diffusion rate of each element in the solid phase.

Original language	English
Pages (from-to)	224-230
Number of pages	7
Journal	Progress in Natural Science: Materials International
Volume	29
Issue number	2
DOIs	https://doi.org/10.1016/j.pnsc.2019.02.006
Publication status	Published - Apr 2019

Keywords

Macrosegregation
OPA-SS
Partition coefficient
Thermodynamic calculation
Titanium alloy

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10.1016/j.pnsc.2019.02.006

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title = "Macrosegregation and the underlying mechanism in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy",

abstract = "A novel method for the analysis of composition distribution of titanium alloys over a large area (64 mm × 72 mm) was investigated by exploring the original position statistic distribution based on spark spectrum (OPA-SS) in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0-Sn-4.0Zr titanium alloy. The results showed that OPA-SS could characterize the distribution of elements in different positions on the titanium alloy. The macrosegregation of Sn was the most pronounced, with a statistic segregation degree higher than 18%; the macrosegregation of Mo followed with a statistic segregation degree of 10%; the macrosegregation of Al and Fe was relatively milder, lower than 8%. The main reason for the macrosegregation state of the as-cast Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy can be the solute redistribution during liquid solidification and the diffusion rate of each element in the solid phase.",

keywords = "Macrosegregation, OPA-SS, Partition coefficient, Thermodynamic calculation, Titanium alloy",

author = "Xin Liu and Guang Feng and Yu Zhou and Qunbo Fan",

note = "Publisher Copyright: {\textcopyright} 2019 Chinese Materials Research Society",

year = "2019",

month = apr,

doi = "10.1016/j.pnsc.2019.02.006",

language = "English",

volume = "29",

pages = "224--230",

journal = "Progress in Natural Science: Materials International",

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T1 - Macrosegregation and the underlying mechanism in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy

AU - Liu, Xin

AU - Feng, Guang

AU - Zhou, Yu

AU - Fan, Qunbo

PY - 2019/4

Y1 - 2019/4

N2 - A novel method for the analysis of composition distribution of titanium alloys over a large area (64 mm × 72 mm) was investigated by exploring the original position statistic distribution based on spark spectrum (OPA-SS) in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0-Sn-4.0Zr titanium alloy. The results showed that OPA-SS could characterize the distribution of elements in different positions on the titanium alloy. The macrosegregation of Sn was the most pronounced, with a statistic segregation degree higher than 18%; the macrosegregation of Mo followed with a statistic segregation degree of 10%; the macrosegregation of Al and Fe was relatively milder, lower than 8%. The main reason for the macrosegregation state of the as-cast Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy can be the solute redistribution during liquid solidification and the diffusion rate of each element in the solid phase.

AB - A novel method for the analysis of composition distribution of titanium alloys over a large area (64 mm × 72 mm) was investigated by exploring the original position statistic distribution based on spark spectrum (OPA-SS) in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0-Sn-4.0Zr titanium alloy. The results showed that OPA-SS could characterize the distribution of elements in different positions on the titanium alloy. The macrosegregation of Sn was the most pronounced, with a statistic segregation degree higher than 18%; the macrosegregation of Mo followed with a statistic segregation degree of 10%; the macrosegregation of Al and Fe was relatively milder, lower than 8%. The main reason for the macrosegregation state of the as-cast Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy can be the solute redistribution during liquid solidification and the diffusion rate of each element in the solid phase.

KW - Macrosegregation

KW - OPA-SS

KW - Partition coefficient

KW - Thermodynamic calculation

KW - Titanium alloy

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Macrosegregation and the underlying mechanism in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy

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