Creep crack growth analysis of welded joints for high Cr heat resisting steel

被引：0

作者：

Tabuchi, M. ^{[1
]}

Hongo, H. ^{[1
]}

Watanabe, T. ^{[1
]}

Yokobori Jr., A.T. ^{[2
]}

机构：

[1] National Institute for Materials Science, High Temperature Materials Group, Tsukuba, 305-0047

[2] Tohoku University, Department of Nano Mechanics, Aramaki, Aoba-ku, Sendai, 980-8579

来源：

Journal of ASTM International | 2006年 / 3卷 / 05期

关键词：

Creep crack growth; FEM; High Cr heat resisting steel; Type IV fracture; Welded joint;

D O I：

10.1520/JAI13226

中图分类号：

学科分类号：

摘要：

The creep strength of weldment for high Cr ferritic steels decreases due to Type IV damages in the heat affected zone during long-term services at high temperatures. It is important to predict initiation and growth of creep voids and cracks in weldment. This paper clarified the Type IV crack initiation and growth properties in fine-grained HAZ of weldments for tungsten strengthened high Cr steels. On the basis of experimental results, the computational simulation for Type IV crack growth behavior was conducted. The effect of multiaxial stress condition on vacancy diffusion and crack initiation was discussed. Copyright © 2006 by ASTM International.

引用

共 13 条

[1]

Bell K., Elevated temperature midlife weldment cracking (type IV) - A review, TWI Report, 597, 1977, (1997)

[2]

Masuyama F., Matsui M., Komai N., Creep rupture behavior of advanced 9-12 %Cr steel weldment, Key Eng. Mater., 171-174, pp. 99-107, (2000)

[3]

Tabuchi M., Watanabe T., Kubo K., Matsui M., Kinugawa J., Abe F., Creep crack growth behavior in the HAZ of weldments of W containing high Cr steel, Int. J. Pressure Vessels Piping, 78, 11-12, pp. 779-784, (2001)

[4]

Yokobori Jr. A.T., Takamori S., Yokobori T., Hasegawa Y., Kubota K., Hidaka K., Mechanical behavior and strengthening mechanism of W containing 9-12 %Cr steels under creep condition for a cracked specimen, Key Eng. Mater., 171-174, pp. 131-138, (2000)

[5]

Standard Test Method for Measurement of Creep Crack Growth Rates in Metals, (2000)

[6]

Webster G.A., Ainsworth R.A., High Temperature Component Life Assessment, (1994)

[7]

Ernst H.A., Unified solution for J ranging continuously from pure bending to pure tension, ASTM STP, 791, pp. 499-519, (1983)

[8]

Shibli I.A., Hamata N.L., Creep crack growth in P22 and P91 welds-overview from SOTA and HIDA projects, Int. J. Pressure Vessels Piping, 78, 11-12, pp. 785-793, (2001)

[9]

Nikbin K.M., Smith D.J., Webster G.A., An engineering approach to the prediction of creep crack growth, Trans. ASME, J. Eng. Mater. Tech., 108, 2, pp. 186-191, (1986)

[10]

Hsu T.R., Zhai Z.H., A finite element algorithm for creep crack growth, Eng. Fract. Mech., 20, 3, pp. 521-533, (1984)

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