Abstract
The influence of strength mismatch in a dissimilar steel joint on the Charpy absorbed energy was numerically analyzed on the basis of the Beremin model. The toughness correction ratio γCVN was defined as the ratio of the Charpy absorbed energy of a dissimilar steel joint specimen to that of a homogeneous specimen under the same Weibull stress. The Charpy test results for a clad joint of dissimilar steels were characterized using γCVN. A fracture toughness evaluation method was developed from the Charpy data for dissimilar steel joints considering γCVN. The fracture toughness at temperature T was predicted according to ASTM E1921 and BS 7910:2015 standards using the 27 J transition temperature T27J determined from the estimated Charpy transition curve. The predicted KJc transition curve showed reasonable agreement with the experimental results.
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References
Ruggieri C, Minami F, Toyoda M (1993) Effect of strength mismatch on crack tip stress fields of HAZ-notched joints subjected to bending and tension. J Soc Naval Arch Jpn 174:543–549
Seo K, Nogata F, Masaki J (1986) The absorbed energy in Charpy impact test for specimens with mechanical heterogeneity. J Soc Mater Sci Jpn 35:1405–1410 (in Japanese)
Takashima Y, Yamada YS, Handa T, Igi S, Oi K, Minami F (2015) Numerical analysis of strength mismatch effect on stress field in Charpy specimen. Weld World 59:433–441
Ito Y, Takashima Y, Handa T, Igi S, Oi K, Minami F (2016) Evaluation of brittle fracture resistance of dissimilar joints by the Weibull stress criterion. Preprints of the National Meeting of JWS 398–399. (in Japanese) https://doi.org/10.14920/jwstaikai.2017f.0_60
Ito Y, Takashima Y, Minami F (2017) Strength mismatch effects on Charpy absorbed energy and CTOD fracture toughness. Quart J Jpn Weld Soc 35:61s–65s
Takashima Y, Ohata M, Inose K, Yamaoka H, Nakanishi Y, Minami F (2016) Evaluation of Charpy impact toughness using side-grooved specimen for hybrid laser-arc welds of ultra-high-strength steel. Weld World 60:1191–1199
Barsom JM (1975) Development of the AASHTO fracture-toughness requirements for bridge steels. Eng Fract Mech 7:605–618
Wallin K (1989) A simple theoretical Charpy-V KIc correlation for irradiation embrittlement. In: Proc ASME Pressure Vessels and PipingConference: Innovative Approaches to Irradiation Damage and Fracture Analysis 170:93–100
British Standards (2013) BS7910: guide to methods for assessing the acceptability of flaws in metallic structures
Beremin FM, Pineau A, Mudry F, Devaux JC, D’Escatha Y, Ledermann P (1983) A local criterion for cleavage fracture of a nuclear pressure vessel steel. Metallurgical Trans A 14:2277–2287
Minami F, Brückner-Foit A, Trolldenier B (1990) Numerical procedure for determining Weibull parameters based on the local approach. In: Proc Euro Conf on Fract ECF8: 76–81
Ruggieri C, Minami F, Toyoda M, Hagiwara Y, Inoue T (1992) Local approach to notch depth dependence of CTOD results. J Soc Naval Arch Jpn 171:493–499
Minami F, Brückner-Foit A, Munz D, Trolldenier B (1992) Estimation procedure for the Weibull parameters used in the local approach. Int J Fract 54:197–210
Takashima Y, Handa T, Minami F (2017) Three-dimensional dynamic explicit finite element analysis of Charpy impact test. Mater Sci Forum 879:1905–1910
Takashima Y, Handa T, Ito Y, Minami F (2018) Dynamic finite element analysis based on the Hertzian contact theory for effect of striker radius on impact response for Charpy specimen. J Soc Mater Sci Jpn 67:977–984 (in Japanese)
Taylor GI, Quinney H (1934) The latent energy remaining in a metal after cold working. Proc Royal Soc Lond A 143:307–326
Bennett PE, Sinclair GM (1966) Parameter representation of low-temperature yield behavior of body-centered cubic transition metals. J Basic Eng 88:518–524
Kubo T, Igi S, Shimanuki H, Yamauchi M, Minami F, Toyoda M (2001) Estimation of strength of steel subjected to plastic pre-strain and dynamic loading. In: Proceedings of the 7th International Welding Symposium (7WS). 1129–1134
Oldfield W (1979) Fitting curves to toughness data. J Test Eval 7:326–333
ASTM international (2016) ASTM E1921: test method for the determination of reference temperature, T 0 for ferritic steels in the transition range
Ohata M, Minami F, Toyoda M (1996) Evaluation of HAZ fracture toughness of welded joints with strength mis-matching by the local approach. J Soc Naval Arch Jpn 180:565–573 (in Japanese)
Funding
This work was supported by JSPS KAKENHI (grant number JP17K14822) and financially supported by Project to Create Research and Educational Hubs for Innovative Manufacturing in Asia, Osaka University of Special Budget Project of the Ministry of Education, Culture, Sports, Science and Technology.
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Takashima, Y., Ito, Y., Lu, F. et al. Fracture toughness evaluation for dissimilar steel joints by Charpy impact test. Weld World 63, 1243–1254 (2019). https://doi.org/10.1007/s40194-019-00752-x
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DOI: https://doi.org/10.1007/s40194-019-00752-x