Element Evaporation of Nb-7Ta Alloy in the EB Melting

Feng Yi; Li Feng; Luo Wenzhong; Du Jianchao; Fu Baoquan; Zhang Wei; Lai Yunjin; He Yongsheng; Feng Yong

doi:10.15980/j.tzzz.2015.07.026

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Element Evaporation of Nb-7Ta Alloy in the EB Melting
Vol. 35, Issue 7, Pages: 758-760(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.07.026

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[1]冯益,李锋,罗文忠,杜建超,付宝全,张维,赖运金,何永胜,冯勇.电子束熔炼Nb-Ta合金元素挥发烧损研究[J].特种铸造及有色合金,2015,35(07):758-760.

Feng Yi, Li Feng, Luo Wenzhong, et al. Element Evaporation of Nb-7Ta Alloy in the EB Melting. [J]. Special Casting & Nonferrous Alloys 35(7):758-760(2015)
[1]冯益,李锋,罗文忠,杜建超,付宝全,张维,赖运金,何永胜,冯勇.电子束熔炼Nb-Ta合金元素挥发烧损研究[J].特种铸造及有色合金,2015,35(07):758-760. DOI： 10.15980/j.tzzz.2015.07.026.

Feng Yi, Li Feng, Luo Wenzhong, et al. Element Evaporation of Nb-7Ta Alloy in the EB Melting. [J]. Special Casting & Nonferrous Alloys 35(7):758-760(2015) DOI： 10.15980/j.tzzz.2015.07.026.

摘要

研究了Nb-7Ta合金在电子束熔炼过程中的金属元素挥发烧损特性

确定了在3 473K时Nb-7Ta合金在真空熔炼过程中各元素相对基体元素Nb的挥发系数β值。结果表明

在熔炼过程中基体Nb是熔炼过程挥发的主体

杂质Fe次之

合金Ta和其他杂质金属元素均有不同程度的挥发和烧损。

Abstract

The evaporation characteristics of the Nb-7Ta alloy in the electron beam melting（EBM）processing was analyzed.The relative volatilityβvalues of other elements to the Nb element at 3 473 Kin vacuum melting process were determined.It is found that the main evaporation element is Nb in the EBM process

and then Fe

and the other metal elements are concentrated with different degree.

关键词

Nb-7Ta合金电子束熔炼挥发相对挥发系数

Keywords

Nb-7Ta AlloyEBMEvaporationRelative Volatility

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Present Status of Technology and Theory of Ti Alloy Smelting