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| MECHANISM AND STATISTICAL CRITERION OF CLEAVAGE FRACTURE OF MICROSTRUCTURE IN WELDED 15MnVN STEEL |
| by HOU Chunxiao; CAI Qigong; SU Yi; ZHENG Xiuyuan (Tsinghua University; Beijing) |
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Cite this article:
by HOU Chunxiao; CAI Qigong; SU Yi; ZHENG Xiuyuan (Tsinghua University; Beijing). MECHANISM AND STATISTICAL CRITERION OF CLEAVAGE FRACTURE OF MICROSTRUCTURE IN WELDED 15MnVN STEEL. Acta Metall Sin, 1986, 22(6): 58-66.
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Abstract Three kinds of simulated HAZ specimens of 15MnVN steel were tested. Based on metallographic and SEM examinations on fractured specimens, it has been clarified that the cleavage fracture initiates at the crack nuclei formed in M-A constituents. A statistical criterion of cleavage fracture for the specimens has been derived. It describes quantitatively the relationship among K_(IC)(or J_(IC)), σ_y, the hardening exponent, n, and the cumulative fracture probability, P, and the relationship between J_(IC) and T, by which the predicted values are in good agreement with the experimental results.
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Received: 18 June 1986
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1 Ritchie, R. O.; Knott, J. F.; Rice, J. R., J. Mech. Phys. Solids, 21(1973) , 395．
2 Curry, D.A.; Knott, J.F., Met. Sci., 13(1979) , 341．
3 Pineau, A., Advances in Fracture Research, Vol. 2, Proc. of the 5th Int. Conf. on Fracture, ICF5, Paris, 1981, 553．
4 Weibttll, W., A Statistical Theory of the Strength of Materials, Roy. Swed. Inst. Eng. Research, №151, 1939．
5 Curry, D.A., Met. Sci., 14(1980) , 319．
6 McMeeking, R.M., J. Mech. Phys. Solids, 25(1977) , 357．
7 Tracey, D.M., Trans. ASME, Ser. H, J. Eng. Mater. Technol., 98(1976) , 146．
8 Uhlmann, W.; Knesl, Z.; Kuna, M.; Bilek, Z., Int. J. Fract., 12(1976) , 507．
9 Griffiths, J.R.; Owen, D. R.J., J. Mech. Phys. Solids, 19(1971) , 419．
10 侯纯孝;蔡其巩;苏毅;郑秀瑗,第四届全国断裂学术会议文集,1985。) |
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