相关实验视频
Updated: Sep 13, 2025
07:18
Generating Lap Joints Via Friction Stir Spot Welding on DP780 Steel
Published on: August 13, 2019
7.1K
通过阻力点与介层进行接的Ti/钢接头的性能
Nannan Wang1,2,3, Gang Li1, Yanling Hu4
1School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.
Materials (Basel, Switzerland)
|July 30, 2025
概括
使用片间层连接和钢的连接是通过特定的接电流进行优化. 一个0.04毫米的薄膜中间层和8kA电流最大限度地拉伸剪切负荷,防止有害的金属间化合物形成.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
- 连接技术 连接技术
背景情况:
- 结合不相似的金属,如 (TA2) 和钢 (Q235) 提出了挑战,由于不同的材料特性.
- 电阻点接是一种常见的方法,但要实现和钢之间强大的连接,需要仔细控制.
- 薄膜间层在缓解直接与不同金属接触时产生的问题方面表现出有希望.
研究的目的:
- 为了研究薄膜间层厚度和接电流对TA2到Q235钢抗性点的微观结构和机械性能的影响.
- 确定最佳的接参数,以最大限度地提高这些不相似的接头的拉力剪切负载能力.
- 分析接口微观结构,并确定影响关节性能的金属间化合物的形成.
主要方法:
- 使用0.02毫米,0.04毫米和0.06毫米的薄膜介层,对2毫米厚的TA2和Q235钢板进行电阻点接.
- 使用显微镜对颗粒区和接口区域微观结构的系统观察和分析.
- 接接头的拉力切削承载能力的评估.
主要成果:
- 拉力剪切负荷最初随接电流而增加,然后减少.
- 在8kA的接电流和0.04毫米的片介层下,达到8.02 kN的最大拉力切削负荷.
- 减少的接电流防止了-钢接口的过度混合,将金属间化合物限制在Ti-Ni系列中.
结论:
- 优化接电流和薄膜间层厚度对于成功的钢电阻点接至关重要.
- 在8kA的电流下,0.04mm的薄膜中间层通过控制接口反应,提供了优越的关节强度.
- 控制Ti-Ni系列的金属间化合物形成是提高钢接头的拉力剪切负荷的关键.
相关概念视频
01:17Steel Fastening Techniques
231
Steel sections can be joined together through various fastening techniques including riveting, bolting, and welding, each suitable for different structural requirements and conditions.
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
Bolting is another...
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
Bolting is another...
231
01:18Mechanical Characteristics of Steel
765
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
765
01:26Residual Stresses
279
Residual stresses reside in a structure even after removing the original stress inducer. This phenomenon often arises from varied plastic deformations across different parts of a structure. Consider a rod stretched beyond its yield point. It will not regain its original length due to permanent deformation. Even after load removal, the rod does not entirely lose stress because of uneven plastic deformations, resulting in residual stresses. The computation of these stresses in structures is...
279