董闯

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教授

博士生导师

硕士生导师

性别:男

毕业院校:法国洛林国立综合理工学院

学位:博士

所在单位:材料科学与工程学院

电子邮箱:dong@dlut.edu.cn

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微量元素(Hf/Ta/Nb)添加对近α-Ti合金高温抗氧化性能的影响

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论文类型:期刊论文

发表时间:2022-06-30

发表刊物:中国有色金属学报

期号:10

页面范围:2086-2092

ISSN号:1004-0609

摘要:The composition characteristics of near α-Ti alloy Ti 1100 with the guidance of a cluster-plus-glue-atom model were investigated. A new alloy series with the cluster formula of [Al-(Ti13.7(Zr/Hf)0.3)](Al0.69Sn0.18Si0.12- (Mo/Ta/Nb)0.03) was designed by adding minor Hf, Ta, and Nb. The structures of alloys were characterized, and the oxidation resistance properties were measured. The results show that the Hf substitution for Zr doesn't influence the β transition lamellar microstructure. While that various combinations of Ta and Nb to substitute for Mo could form equiaxed α microstructure. The oxidation-resistant capacities of designed alloys are enhanced obviously at 800 in comparison with that of Ti 1100. The oxidation mass gains of the designed alloys with Hf, Nb and Ta co-alloying after 100 h at 800 are about (2.2±0.2) mg/cm2. © 2016, Science Press. All right reserved.

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