Dissimilar Metal Joint
A solid solution is formed by melting and cooling different metals together, forming a homogeneous phase. This can increase strength but also cause complexities in the weld.
Physicochemical mechanism of action
In mixed bonding, different metals mix at the atomic level and form a homogeneous phase. This occurs through diffusion of atoms between the metals during the melting process.
Metallurgical relevance & risks in welding
Mixed bonding can lead to increased strength and toughness, as the different metals exchange their properties. However, it can also lead to complexities in the weld seam, such as phase transformations or uneven stresses, which can result in cracks or deformations.
Workshop practice & instructions
To achieve a homogeneous mixed bond, the metals should be melted at the same temperature. Cooling should be controlled to avoid phase transformations. If issues with cracks or deformations arise, adjusting the composition of the metals or the welding parameters can be helpful.