锻压技术

2B06铝合金双层结构件DB&SPF组合工艺研究

英文标题：Research on DB&SPF combination process of double-layer structural parts for 2B06 aluminum alloy

作者：王国峰张建威张晓巍李骁王海伦

分类号：TG146.2

出版年,卷(期):页码：2020,45(7):187-191

摘要：

基于DB&SPF组合工艺的优势，采用表面碱洗预处理去除氧化膜的方法，实现了2B06铝合金双层结构件的制备。研究了表面粗糙度和扩散温度对2B06铝合金扩散连接接头组织和性能的影响，确定了最适宜的扩散连接工艺参数。通过高温单向拉伸实验、有限元仿真拟合等方法，制定了2B06铝合金超塑成形的工艺参数。结果表明：在连接压强为5 MPa、保温时长为2.5 h、扩散温度为500~530 ℃时，扩散连接效果较为理想；较低的表面粗糙度可以降低接头位置的氧含量浓度，提高接头质量；接头剪切强度可达78 MPa以上。随后，在450 ℃、应变速率为0.003 s-1下超塑成形，得到了结合良好的2B06铝合金中空双层结构件。

Based on the advantages of DB&SPF combination process, the preparation of double-layer structural part for 2B06 aluminum alloy was realized by the method of surface alkaline cleaning pretreatment removing oxide film. Then, the influences of surface roughness and diffusion temperatures on the microstructures and properties of diffusion bonding joints for 2B06 aluminum alloy were studied, and the most suitable process parameters of diffusion bonding were obtained. Furthermore, the process parameters of 2B06 aluminum alloy superplastic forming were determined by high temperature uniaxial tensile test and finite element simulation fitting method and so on. The results show that the best diffusion bonding effect is obtained with the bonding pressure of 5 MPa, the maintaining time of 2.5 h and the diffusion temperature of 500~530 ℃, and the oxygen concentration at the joint position effectively decreases by lower surface roughness to improve the quality of joint. However, the shear strength of joint reaches above 78 MPa. Finally, the superplastic forming is performed at 450 ℃ under the strain rate of 0.003 s-1, and the double-layer structural part of 2B06 aluminum alloy with high quality is obtained.

基金项目：

国家自然科学基金资助项目（51875122）

王国峰（1973-），男，博士，教授，博士生导师 E-mail：gfwang@hit.edu.cn

参考文献：

[1]Wu F, Zhou W L, Zhao B, et al. Interface microstructure and bond strength of 1420/7B04 composite sheets prepared by diffusion bonding[J]. Rare Metals, 2018, 37(7):613-620.

[2]刘树英, 张冬冬, 刘亚洲, 等. 钛合金/Cu/不锈钢扩散焊界面化合物生长行为解析[J]. 焊接学报, 2019, 40(9):133-138.

Liu S Y, Zhang D D, Liu Y Z, et al. Analysis of growth behavior of intermetallic compound in diffusion bonding of Ti alloy/Cu/stainless steel[J]. Transactions of the China Welding Institution, 2019, 40(9):133-138.

[3]微石, 阴中炜, 高鹏, 等. TC4半环超塑正反胀形工艺研究[J]. 稀有金属材料与工程, 2017, 46: 139-144.

Wei S, Yin Z W, Gao P, et al. Directreverse SPF process for TC4 semiannular part[J]. Rare Metal Materials and Engineering, 2017, 46: 139-144.

[4]王珏, 张晓巍, 王国峰. Ti2AlNb合金超塑成形/扩散连接工艺[J]. 锻压技术, 2019, 44(11):91-98.

Wang J, Zhang X W, Wang G F. Superplastic forming/diffusion bonding technology for Ti2AlNb alloy[J]. Forging ＆ Stamping Technology, 2019, 44(11):91-98.

[5]Ebrahiem A A, Manas R K, Vinagre G. Distally based sural artery peroneus flap (DBSPF) for foot and ankle reconstruction[J]. Plastic & Reconstructive Surgery Global Open, 2017, 5(4): 1276.

[6]Jiang S, Yong J, Zhen L, et al. Superplastic forming/diffusion bonding without interlayer of 5A90 AlLi alloy hollow doublelayer structure[J]. Journal of Materials Engineering & Performance, 2017, 26(9): 4265-4273.

[7]Zhao Z, Xu J H, Fu Y C, et al. An investigation on adaptively machining the leading and tailing edges of an SPF/DB titanium hollow blade using freeform deformation[J]. Chinese Journal of Aeronautics, 2018, 31(1): 1-9

[8]欧阳金栋, 刘慧慧, 马俊飞, 等. 基于钛合金舵面的超塑成形/扩散连接工艺[J]. 机械制造与自动化, 2018, 47(1): 66-69.

Ouyang J D, Liu H H, Ma J F, et al. Analysis of SPF/DB combination process based on titanium alloy rudder[J]. Machine Building & Automation, 2018, 47(1): 66-69.

[9]陈敏, 叶凌英, 孙大翔, 等. 升温速率对7B04铝合金板材晶粒组织和超塑性的影响[J]. 材料工程, 2017, 45(3): 112-118.

Chen M, Ye L Y, Sun D X, et al. Effect of heating rate on grain structure and superplasticity of 7B04 aluminum alloy sheet[J]. Journal of Materials Engineering，2017, 45(3): 112-118.

[10]王建, 杨文静, 李卓梁, 等. 7B04铝合金的超塑变形行为及其机理[J]. 材料研究学报, 2018, 32(9): 37-46.

Wang J, Yang W J, Li Z L, et al. Superplastic behavior and deformation mechanism of 7B04 Alalloy[J]. Chinese Journal of Materials Research, 2018, 32(9): 37-46.

[11]朱丽, 迟彩楼, 张晓巍, 等. 大型钛合金双层板超塑成形/扩散连接工艺仿真[J]. 制造技术与机床, 2016,（12）: 83-87.

Zhu L, Chi C L, Zhang X W, et al. Technological simulation of large titanium alloy twolayer SPF/DB structure[J]. Manufacturing Technology & Machine Tool, 2016,（12）: 83-87.

[12]杜立华, 张兴振, 韩晓宁, 等. 几何参数对SPF/DB三层结构表面质量的影响研究[J]. 航空制造技术, 2018, 61(10): 99-102.

Du L H, Zhang X Z, Han X N, et al. Influence of geometric parameters on surface quality of SPF/DB hollow structure[J]. Aeronautical Manufacturing Technology, 2018, 61(10): 99-102.

服务与反馈：

【文章下载】【加入收藏】