Causes of Lamellar Tearing and How to Prevent? Causes of Lamellar Tearing and How to Prevent? Three general categories: The first one is lamellar tearing induced by cold crack at weld toe or root in haz. The second is the heat-affected zone along the inclusion cracks, is the most common engineering layered tearing. The third type of matrix crack far away from the heat-affected zone (haz) usually occurs in the thick plate structure with more MNS. There are many factors that affect lamellar tear, including: 1. The type, amount and distribution of non-metallic inclusions are the essential reasons of lamellar tearing, which is the root of anisotropy and mechanical properties difference of steel. 2. In the course of welding, the thick-wall welded structures with Z-constraint stress bear different Z-constraint stress, post-welding residual stress and load, which are the mechanical conditions that cause lamellar tearing. 3. It is generally believed that […]
Lamellar Tearing
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