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

被引：0

作者：

Xin Liu ^{[1
,2
]}

Guang Feng ^{[3
]}

Yu Zhou ^{[1
,2
]}

Qunbo Fan ^{[1
,2
]}

机构：

[1] School of Materials Science and Engineering, Beijing Institute of Technology

[2] National Key Laboratory of Science and Technology on Materials Under Shock and Impact, Beijing Institute of Technology

[3] Central Iron and Steel Research Institute

来源：

Progress in Natural Science:Materials International | 2019年 / 29卷 / 02期

基金：

中国国家自然科学基金;

关键词：

OPA-SS; Macrosegregation; Titanium alloy; Thermodynamic calculation; Partition coefficient;

D O I：

暂无

中图分类号：

TG146.23 [];

学科分类号：

080502 ;

摘要：

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-6.5 Al-1.0 Cr-0.5 Fe-6.0 Mo-3.0-Sn-4.0 Zr 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-6.5 Al-1.0 Cr-0.5 Fe-6.0 Mo-3.0 Sn-4.0 Zr alloy can be the solute redistribution during liquid solidification and the diffusion rate of each element in the solid phase.

引用

页码：224 / 230

页数：7

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