LaNd对Ti-13Zr-21Cu-9Ni钎料铺展性及TC4接头性能的影响

李超君; 闫焉服; 任晓飞; 王亚明; 王红娜

doi:10.12073/j.hjxb.20200527002

LaNd对Ti-13Zr-21Cu-9Ni钎料铺展性及TC4接头性能的影响

河南科技大学，洛阳，471023

基金项目: 河南省杰出青年基金资助项目(144100510002)

详细信息

作者简介:
李超君，1995年出生，硕士；主要从事先进材料连接方向的研究；发表论文7篇；Email：llcj18437952530@163.com.

通讯作者:
闫焉服，教授；Email：yanyanfu@haust.edu.cn.

中图分类号: TG 425
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出版历程
- 收稿日期: 2020-05-26
- 网络出版日期: 2021-01-26
- 刊出日期: 2021-02-01

Effect of LaNd on the spreadability of Ti-13Zr-21Cu-9Ni brazing fillers and the properties of TC4 joint

Henan University of Science and Technology, Henan, 471023, China

摘要

摘要: 为了优化Ti-13Zr-21Cu-9Ni钎料性能、获得一种性能优良的Ti合金接头，向Ti-13Zr-21Cu-9Ni钎料中添加了稀土元素LaNd. 以应用普遍的TC4合金为母材，通过真空炉、场发射扫描电镜、X射线衍射仪等设备研究了稀土元素LaNd对Ti-13Zr-21Cu-9Ni钎料铺展性能及TC4接头性能的影响. 结果表明，随着LaNd添加量的增加，Ti-13Zr-21Cu-9Ni-xLaNd钎料的铺展面积和Ti-13Zr-21Cu-9Ni-xLaNd/TC4钎焊接头的抗剪强度先增大后减小. 当LaNd添加量为0.3%时，Ti-13Zr-21Cu-9Ni-xLaNd钎料铺展面积最大，最大值为0.74 cm²，较基体提高了88.8%；当LaNd添加量继续增加时，生成的Cu₅La相会使钎料的铺展性能大幅降低. Ti-13Zr-21Cu-9Ni-xLaNd/TC4钎焊接头抗剪强度在LaNd添加量为0.3%时达到最大值，为157.1 MPa，较基体提高了45.2%. LaNd的最佳添加量应该为0.3%.
- 稀土镧钕 /
- 钛合金接头 /
- 铺展性能 /
- 抗剪强度
Abstract: In order to optimize the properties of Ti-13Zr-21Cu-9Ni brazing fillers and obtain a good performance Ti alloy joint, rare earth element LaNd was added to Ti-13Zr-21Cu-9Ni brazing fillers. The commonly used TC4 alloy was used as the mother The effect of rare earth element LaNd on the spreading performance of Ti-13Zr-21Cu-9Ni brazing fillers and the performance of TC4 joints was studied by vacuum furnace, field emission scanning electron microscope, X-ray diffractometer and other equipment. The results showed that the spread area of Ti-13Zr-21Cu-9Ni-xLaNd brazing fillers and the shear strength of Ti-13Zr-21Cu-9Ni-xLaNd/TC4 brazed joints first increased and then decreased with the addition of LaNd increased. When the LaNd addition is 0.3%, Ti-13Zr-21Cu-9Ni-xLaNd brazing fillers has the largest spreading area, the maximum value is 0.74 cm², which is 88.8% higher than the matrix; when the addition of LaNd continues to increase, the formed Cu₅La phase greatly reduce the spreading performance of the brazing fillers. Ti-13Zr-21Cu-9Ni-xLaNd/TC4 brazed joint shear strength reaches the maximum when the LaNd addition is 0.3%, which is 157.1 MPa, which is 45.2% higher than the matrix. Therefore, the optimal addition of LaNd It should be around 0.3%.
- rare earth lanthanum and neodymium /
- titanium alloy joint /
- spreadability /
- shear strength

HTML全文

图 1 LaNd对Ti-13Zr-21Cu-9Ni钎料铺展面积的影响

Figure 1. Effect of rare earth La on spreading area of the Ti-13Zr-21Cu-9Ni alloy

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图 2 Ti-13Zr-21Cu-9Ni-xLaNd钎料扫描电镜图

Figure 2. SEM images showing microstructure of the Ti-13Zr-21Cu-9Ni-xLaNd brazing fillers. (a) Ti-13Zr-21Cu-9Ni; (b) Ti-13Zr-21Cu-9Ni-0.1LaNd; (c) Ti-13Zr-21Cu-9Ni-0.3LaNd; (d) Ti-13Zr-21Cu-9Ni-0.5LaNd

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图 3 Ti-13Zr-21Cu-9Ni-xLaNd钎料XRD图

Figure 3. XRD pattern of Ti-13Zr-21Cu-9Ni-XRE brazing fillers. (a) Ti-13Zr-21Cu-9Ni; (b) Ti-13Zr-21Cu-9Ni-0.1LaN; (c) Ti-13Zr-21Cu-9Ni-0.3LaNd; (d) Ti-13Zr-21Cu-9Ni-0.5LaNd

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图 4 TC4钎焊接头抗剪强度曲线

Figure 4. Shear strength curve of the TC4 joint

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图 5 Ti-13Zr-21Cu-9Ni-xLaNd (x = 0%, 0.1%, 0.3%, 0.5%)/TC4钎焊接头扫描电镜图

Figure 5. SEM images of the Ti-13Zr-21Cu-9Ni-xLaNd/TC4 joint. (a) Ti-13Zr-21Cu-9Ni; (b) Ti-13Zr-21Cu-9Ni-0.1LaNd; (c) Ti-13Zr-21Cu-9Ni-0.3LaNd; (d) Ti-13Zr-21Cu-9Ni-0.5LaNd

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图 6 钎焊接头断口扫描电镜图

Figure 6. SEM fracture images of the Ti-13Zr-21Cu-9Ni-xLaNd/TC4 joint. (a) Ti-13Zr-21Cu-9Ni; (b) Ti-13Zr-21Cu-9Ni-0.1LaNd; (c) Ti-13Zr-21Cu-9Ni-0.3LaNd; (d) Ti-13Zr-21Cu-9Ni-0.5LaNd

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表 1 图5a中1 ~ 3区EDS分析结果w (质量分数，%)

Table 1 EDS analysis results of the zone 1,2 and 3 in Fig.5a

区域	AlK	ZrK	TiK	VK	NiK	CuK
1	08.31	00.52	89.42	03.82	00.52	01.24
2	02.60	05.62	81.09	00.38	03.05	07.27
3	02.13	27.98	38.69	00.00	11.95	18.73

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