FRACTURE TOUGHNESS TEST PIECE FOR EVALUATION OF CLAD STEEL PLATE JOINT INTERFACE AND TEST METHOD

Japanese Patent JP2023041260

A

To provide a test piece and a test method for evaluating the fracture toughness of a joint interface between a cladding material and a base material of a clad steel plate.SOLUTION: A fracture toughness test piece for evaluation of a clad steel plate joint interface of the present invention is a fracture toughness test piece that consists of a welded part of a clad steel plate and supplementary members. In the test piece, there is a supplementary member on a surface of a cladding material that is welded through one pass with the same material as the cladding material. On a back surface side thereof, there is a supplementary member on a base material that is welded through one pass with the same material as the base material. A clad joint interface has a mechanical notch and a side groove parallel to it, and a fatigue pre-crack is introduced from the bottom of the mechanical notch along the clad interface.SELECTED DRAWING: Figure 4

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KAYAMORI YOICHI
SHIMANUKI HIROSHI

JP2021148525A

March 24, 2023

September 13, 2021

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NIPPON STEEL STAINLESS STEEL CORP

B23K15/00; G01N3/00; B23K26/21

Aoki Atsushi
Shinji Mihashi
Ritsuo Fukuchi
Saito Manabu
Kenji Kimura

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