Ag interlayer's influence on microstructure and mechanical properties of laser-welded Ta/304L joints

被引：0

作者：

Zhou, Yongqiang ^{[1
]}

Zhu, Zhengqiang ^{[1
]}

Feng, Shanshan ^{[1
]}

Mi, Dakun ^{[1
]}

Zhu, Yunming ^{[1
]}

Chen, Yanfei ^{[1
]}

Zhao, Fei ^{[1
]}

Guo, Yukun ^{[1
]}

机构：

[1] Nanchang Univ, Sch Adv Mfg, Nanchang 330031, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2024年 / 40卷 / 16期

关键词：

Ta; 304L; laser welding; microstructure; Ag interlayer; first principles calculation; STAINLESS-STEEL; DISSIMILAR JOINTS; ELECTRON-BEAM; TANTALUM; ALUMINUM; ALLOY;

D O I：

10.1177/02670836241242565

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tantalum and 304L possess unique properties for aerospace applications. Ta offers high temperature and acid/alkali resistance, while 304L is cost-effective with excellent corrosion resistance. Joining Ta and 304L optimises design, lowers costs and meets specific requirements. This study examined laser lap welding of 0.6 mm Ta and 304L with/without silver interlayer. Joint structure and properties were analysed to reveal the influence of detrimental phases, with first principles calculations for TaFe2 and TaCr2. Without Ag interlayer, the joint had 1857.19 N tensile shear force and 530 HV average weld zone hardness. Adding Ag reduced TaFe2 formation, improving tensile shear strength to 2100.30 N with 460 HV average hardness. First principles calculation confirmed TaCr2's superior phase stability over TaFe2.

引用

页码：1219 / 1231

页数：13

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