Oval lock joint of dissimilar materials and preparation method thereof
A dissimilar material and ellipse technology, applied in the direction of mechanical equipment, fixtures, etc., can solve the problems of difficult crack propagation, joint strength reduction, joint plasticity, etc., to reduce the effect of stress concentration, enhance joint strength, and improve the effect of bonding strength
Active Publication Date: 2022-04-15
TSINGHUA UNIV
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Problems solved by technology
However, during the welding process, the metallurgical reaction between dissimilar metals produces brittle phases such as intermetallic compounds, which sharply reduces the strength of the joint, and the joint is prone to cracks under load
At the same time, in the existing welding technology, the joint interface is often a two-dimensional flat interface, which is difficult to effectively prevent crack propagation, resulting in low joint plasticity and easy cracking
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preparation example Construction
[0063] refer to image 3 with Figure 4 , image 3 It is a schematic diagram of the size of the elliptical prongs of an elliptical lock joint of dissimilar materials in the embodiment of the present invention, Figure 4 It is a schematic pouring diagram of an elliptical lock joint of dissimilar materials in an embodiment of the present invention. Based on the above-mentioned elliptical lock joint of dissimilar materials, this application provides a preparation method of an elliptical lock joint of dissimilar materials. The method includes :
[0064] Step S1: According to the material properties and structural application conditions of the first connecting material body and the second connecting material body, design the dimensions of the first oval lock and the second oval lock;
[0065] In this embodiment, according to the material properties and structural application conditions of the first connecting material body and the second connecting material body, the dimensions ...
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The invention provides an elliptical lock joint of dissimilar materials and a preparation method thereof, relating to the technical field of material connection, including: a first connecting material body and a second connecting material body, wherein the first connecting material body is provided with a first Oval lock, the material of the second connecting material body is different from the material of the first connecting material body, the second connecting material body is provided with a second elliptical lock matching with the first elliptical lock, the first connecting material body and the first connecting material body The second connecting material body is connected through the first oval lock and the second oval lock, and the first connecting material body and the second connecting material body are connected through the first oval lock and the second oval lock. The joints of the material body and the second connection material body are staggered and occluded, taking into account the joint's tensile, shear, energy consumption and other properties, and can improve the bonding strength of heterogeneous materials. At the same time, it provides a preparation method of the elliptical locking joint of dissimilar materials.
Description
technical field [0001] The invention relates to the technical field of material connection, in particular to an oval locking joint of dissimilar materials and a preparation method thereof. Background technique [0002] In order to give full play to the excellent properties of different materials or to complete specific functions, a large number of heterogeneous material connection schemes are used in engineering. However, the susceptibility to failure at the interface of heterogeneous materials has always been one of the key issues plaguing the reliability of overall structural components. [0003] Taking metal materials as an example, among the joining methods of dissimilar metal materials, welding methods are widely used, such as arc welding, laser welding, electron beam welding, friction welding, explosive welding, diffusion welding, etc. However, during the welding process, the metallurgical reaction between dissimilar metals produces brittle phases such as intermetalli...
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IPC IPC(8): B23P15/00B22D19/16F16B1/00
CPCB23P15/00B22D19/16F16B1/00
Inventor 崔一南吴俊豪
Owner TSINGHUA UNIV