Effect of V co ntent in flux-cored wire on properties of weld transition layer of Ti/X65 composite plate

SONG Liping; ZHANG Min

doi:10.7512/j.issn.1001-2303.2021.02.20

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Effect of V co ntent in flux-cored wire on properties of weld transition layer of Ti/X65 composite plate
Vol. 51, Issue 2, Pages: 104-108(2021)
DOI： 10.7512/j.issn.1001-2303.2021.02.20

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SONG Liping, ZHANG Min. Effect of V co ntent in flux-cored wire on properties of weld transition layer of Ti/X65 composite plate. [J]. 51(2):104-108(2021)
DOI：

SONG Liping, ZHANG Min. Effect of V co ntent in flux-cored wire on properties of weld transition layer of Ti/X65 composite plate. [J]. 51(2):104-108(2021) DOI： 10.7512/j.issn.1001-2303.2021.02.20.

摘要

采用自行研制的Cu基体药芯焊丝对Ti/X65层状复合板进行熔焊对接试验,焊丝中V粉的包覆率分别为15%、20%、25%。研究发现,V元素的加入可显著减少Ti-Cu金属间化合物的生成并进一步细化焊接接头显微组织,且V可与Ti形成连续固溶体,稀释了焊缝中的Ti元素。当V含量为25%时,焊接接头的抗拉强度和弯曲强度均达到最大值。从硬度方面分析,Cu药芯焊丝过渡层硬度较高,约为500 HV,0.1,。

Abstract

In this paper,the self-developed Cu based fluxcored wire is used for the fusion welding butt joint test of Ti/X65 layered composite plate,and the coverage of V powder in the welding wire is 15%,20% and 25%. The results show that the addition of V element can significantly reduce the formation of Ti-Cu intermetallic compound and further refine the microst-ructure of the welded joint,and V can form a continuous solid solution with Ti,diluting the Ti element in the weld. When the V content is 25%,the tensile strength and bending strength of the welded joint reach a maximum. From the aspect of hardness,the hardness of the transition layer of Cu flux-cored wire is about 500 HV,0.1,.