Crystalline Defect
Lattice defects are deviations from the ideal crystal lattice, such as vacancies or dislocations. They cause uneven load distribution and can affect mechanical strength.
Physical-Chemical Mechanism of Action
Lattice defects are deviations from the ideal periodic crystal lattice, such as vacancies, interstitial atoms, or dislocations. These disturbances alter the atomic arrangement and lead to uneven load distribution within the material.
Metallurgical Relevance & Risks in Welding
Lattice defects can impair the mechanical strength and toughness of a material. They increase the risk of cracking and wear, especially under high pressure or cyclic loading. In the weld, increased resistance to deformation can lead to hot cracking.
Workshop Practice & Action Guidelines
To minimize lattice defects, pay attention to proper weld preparation and execution. Use appropriate shielding to protect the material from corrosion and environmental contamination. For heavily loaded applications, it's advisable to increase mechanical strength by using special steel grades or hardening methods.