MULTI-PASS BUTT-WELDE JOINT HAVING EXCELLENT BRITTLE CRACK PROPAGATION RESISTANCE AND WELDED STRUCTURE

摘要

A MULTI-PASS BUTT-WELDED JOINT (2) HAVING EXCELLENT BRITTLE CRACK PROPAGATION RESISTANCE COMPRISING A MULTI-PASS BUTT-WELDED JOINT OF STEEL PLATES (1) CHARACTERIZED IN THAT A FRONT SURFACE WELD LAYER (2A) AND A BACK SURFACE WELD LAYER (2B) OF THE WELDED JOINT HAVE FRACTURE RESISTANCES BETTER THAN FRACTURE RESISTANCES OF THE OTHER WELD LAYERS.