Effect of Stainless Steel Weld Overlay Cladding on the Structural Integrity of Flawed Steel Plates in Bending. Series 1.

摘要

The Heavy-Section Steel Technology (HSST) stainless steel cladding evaluations were initiated to study the interaction of stainless cladding with flaws initiated in and propagating in base metal of reactor pressure vessels. A complicating factor in understanding the role of stainless cladding in this setting is its fracture toughness as a function of radiation dose and fabrication process. The initial phase of this study addressed this question by testing the response of specimens clad with single-wire submerged-arc weld overlay in varying toughness levels. The tests completed under the initial phase of this study indicate that cladding of moderate Charpy toughness has only limited capabilities to stop running cracks.