Creep crack growth properties of welded joints for 12Cr ferritic steel

M. Tabuchi; J. C. Ha; A. T. Yokobori

Creep crack growth properties of welded joints for 12Cr ferritic steel

M. Tabuchi, J. C. Ha, A. T. Yokobori

Research output: Contribution to journal › Article › peer-review

Abstract

Type IV cracking in heat affected zone (HAZ) of weldment is a problem for advanced high Cr ferritic heat resisting steels. It is important to predict initiation and growth of creep voids and cracks in weldment. Present paper conducted the creep crack growth tests for the welded joint and base metal of tungsten strengthened 12Cr steel. The initiation and growth properties of Type IV crack in fine-grained HAZ of weldments were clarified. On the basis of experimental results, the programs that simulate Type IV fracture have been developed. The effect of multiaxial stress condition on vacancy diffusion and crack initiation for welded joints was discussed.

Original language	English
Pages (from-to)	47-54
Number of pages	8
Journal	Strength, Fracture and Complexity
Volume	4
Issue number	1
Publication status	Published - 2006 Jun 15

Keywords

Creep crack growth
FEM
P122 steel
Type IV fracture
Welded joint

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "Type IV cracking in heat affected zone (HAZ) of weldment is a problem for advanced high Cr ferritic heat resisting steels. It is important to predict initiation and growth of creep voids and cracks in weldment. Present paper conducted the creep crack growth tests for the welded joint and base metal of tungsten strengthened 12Cr steel. The initiation and growth properties of Type IV crack in fine-grained HAZ of weldments were clarified. On the basis of experimental results, the programs that simulate Type IV fracture have been developed. The effect of multiaxial stress condition on vacancy diffusion and crack initiation for welded joints was discussed.",

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AU - Tabuchi, M.

AU - Ha, J. C.

AU - Yokobori, A. T.

PY - 2006/6/15

Y1 - 2006/6/15

N2 - Type IV cracking in heat affected zone (HAZ) of weldment is a problem for advanced high Cr ferritic heat resisting steels. It is important to predict initiation and growth of creep voids and cracks in weldment. Present paper conducted the creep crack growth tests for the welded joint and base metal of tungsten strengthened 12Cr steel. The initiation and growth properties of Type IV crack in fine-grained HAZ of weldments were clarified. On the basis of experimental results, the programs that simulate Type IV fracture have been developed. The effect of multiaxial stress condition on vacancy diffusion and crack initiation for welded joints was discussed.

AB - Type IV cracking in heat affected zone (HAZ) of weldment is a problem for advanced high Cr ferritic heat resisting steels. It is important to predict initiation and growth of creep voids and cracks in weldment. Present paper conducted the creep crack growth tests for the welded joint and base metal of tungsten strengthened 12Cr steel. The initiation and growth properties of Type IV crack in fine-grained HAZ of weldments were clarified. On the basis of experimental results, the programs that simulate Type IV fracture have been developed. The effect of multiaxial stress condition on vacancy diffusion and crack initiation for welded joints was discussed.

KW - Creep crack growth

KW - FEM

KW - P122 steel

KW - Type IV fracture

KW - Welded joint

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JO - Strength, Fracture and Complexity

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SN - 1567-2069

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Creep crack growth properties of welded joints for 12Cr ferritic steel

Abstract

Keywords

ASJC Scopus subject areas

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