刘禹门

• 1:西安交通大学

摘要(Abstract)：

应用拉伸变形的方法研究变形度对铁素体珠光体钢位错结构和裂纹萌生过程的影响。研究用材料为0.42%C和1.14%Mn的含锰中碳钢。应用Instron试验机对板状试样进行拉伸试验。各试样经不同变形度后卸载。由变形试样制成薄膜。用H700透射电镜和JEM1000超高压电镜对薄膜试样做透射观察。研究表明,在变形的初期(δ=0.3%),铁素体中位错密度很快增加,珠光体中位错密度也在逐渐增加。在这个加载阶段,钢仅有加工硬化。随着变形度(δ=0.9,1.2和5.6%)的增加,铁素体中和珠光体中位错缠结逐渐演变为位错胞。在外加载荷达到最大值之前,在位错聚集的铁素体与珠光体之间的边界出现微裂纹。在这个加载阶段,钢的加工硬化占主要地位,可是材料中已开始出现轻微损伤。变形度(δ=11.2和13%)的进一步增加,铁素体中位错胞壁中的位错密度显著增加。铁素体和珠光体能够以各种形式形成微裂纹。在这个加载阶段,钢的损伤逐渐占主要地位,逐渐形成显微裂纹。

关键词(KeyWords)：

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘禹门

参考文献(References)：

• [1] Y. J Park and I. M. Bernstein, Met. Trans., 10A (1979) 11, p. 1653-1664
• [2] A. R. Rosenfield, G.T. Hahn and J. D. Embury, Met. Trans., 3(1972) ,2797-04
• [3] J. A. Rinebolt and W. J. Harris, Jr., Trans. ASM, 43(1951) , 1175-1214
• [4] K. W. Burns and F. B. Picketing, J. Irou Steel Inst., 202(1964) , 889-906
• [5] G. Langford and M. Cohen, Trans. ASM, 62 (1969) , 623
• [6] G. Langford and M. Cohen, Met. Trans., 6A (1975) , 901-10
• [7] R. N. Gardner and H.G.F. Wilsdorf, Met. Trans., 11A (1980) , 653-58
• [8] R. N. Gardner and H. G. F. Wilsdorf, Met. Trans., 11A (1980) , 659-69
• [9] L. E. Miller and G. S. Smith, J. Iron Steel Inst., 208 (1970) , 998-1005
• [10] W. H. Bruckner, Weld J., 29(1950) , 467s-76s
• [11] A. R. Rosenfield, E. Votava and G. T. Hahn, Trans. ASM, 61(1968) , 807-15
• [12] Y. Ohmori and F. Terasaki, Trans, Iron Steel Inst. Jpn, 16(1976) , 561-68
• [13] A.S. Tetelman and A. J. McEvily, Jr., Fracture of Structural Materials, 618-20, John Wiley and Sons, NY, 1976
• [14] W. Roberts, Acta Met., 24(1976) , 745
• [15] D. A. Porter, K. E. Easterling and G. D. W. Smith, Acta Met., 26 (1978) , 1405
• [16] R.N. Garduer, T. C. Pollock and H. G. F. Wilsdorf, Mater. Sci. Eng., 29 (1977) , 169-71
• [17] J. S. Koehler, Phy. Rev., 85 (1952) , 480
• [18] N. F. Mott, Proc. R. Soc. Londnn, A, 220 (1953) p. 1
• [19] C. Zener, Fracture of Metals, 1948, p. 3, ASM, Cleveland, OH,
• [20] A. H. Cottrell, Trans TMS-AIME, 212 (1958) , 192-203
• [21] A. N. Stroh, Phil. Mug., 3 (1958) , 597-606
• [22] L. E. Murr, R. F. Horyler and W. N. Lin, Phil. Mag., 22 (1972) , 515
• [23] J. T. Moore and D. Kuhlmann-Wilsdorf, J. Appl. Phys., 41(1970) p. 4411, 42(1971) p. 953,3717,3726
• [24] J. T. Moore and D. Kuhlmann-Wilsdorf, Surface Sci., 31 (1972) , 456
• [25] M. N. Bassim and D. Kuhlmann-Wilsdorf, Phys. Status. Solid A, 15 (1973) , 725, 16 (1973) p. 241, 17 (1973) p. 281, p. 379, 19 (1973) p. 335
• [26] R. W. Bauer, R. N. Bardner, R. L. Lyies, Jr., T. C. Pollock and H. G. F. Wilsdorf, Proc. U. S.-Japan HVEM Seminar, p. 102-05, Honolulu, HI, Nagoya University, Nigoya, Japan, 1976
• [27] T. Imura, Dislocation Movie Shown at the U. S.-Japan HVEM Seminar, Honolulu, December 6-10, Department of Metallurgy, University of Nagoya, Japan, 1976
• [28] M. R. Krishnadev and R. Ghosh, Met. Trans. 10 (1979) , 1941-44
• [29] J. D. Embury, Strengthening Methods in Crystals, A. Kelly and R. B. Nicholson (eds) 1971, p. 331-402, Elservier Publishing Co., NY.
• [30] G. E. Dieter, Mechanical Metallurgy, Secondar, 1976, p. 165, McGraw-Hill Book Co., NY

文章评论(Comment)：