对经1000℃正火和600℃回火的水轮机过流部件用钢0Cr13Ni4Mo进行喷丸处理,测量了喷丸影响层的显微硬度、X射线衍射线半高宽和屈服强度等参量的沿层深分布,并计算了相应的晶块尺寸、微观应变和位错密度等微观结构参量.结果表明,该影响层以显微硬度和屈服强度表征的组织强化效应显著,显微硬度和屈服强度提高是由于晶块细化、微观应变和位错密度增大造成的.喷丸影响层不同部位的显微硬度与条件屈服点之比约为3.37;半高宽与显微硬度之间存在两段式线性关系:Hw=2.07×10-3HV-3.47(HV≤2835 MPa)和Hw=1.14×10-3HV-0.81(HV＞2835 MPa),条件屈服点与位错密度的平方根之间存在Bailey-Hirsch线性关系:σs0.2=551+16.2×10-4p1/2.
参考文献
| [1] | Li X Y, Zhang Z Q. In: Sun G X ed, Proc of 9th Chinese Conf on Foundry, Shenyang: Northeastern University Press, 1997:51(李新亚,张仲秋.见:孙国雄主编,第九届中国铸造学术会议论文集,沈阳:东北大学出版社,1997:51) |
| [2] | Wang Z C, Chen H N. Abrasive Erosion Hydraulic Turbine, 2001:56(王者昌,陈怀宁.水机磨蚀,2001:56) |
| [3] | Duan G C. Silt Abrasive Erosion of Hydraulic Turbine.Beijing: Tsinghua University Press, 1981(段国昌.水轮机沙粒磨损.北京:清华大学出版社,1981) |
| [4] | Hirsch T, Vohringer O, Macherauch E. Horterei-techn Mitt, 1986, 41(3): 166 |
| [5] | Hashimoto M, Shiratori M, Nagashima S. In: Iida K ed,Proc 4th Int Conf on Shot Peening, Tokyo: Japan Society of Precision Engineering, 1990:495 |
| [6] | Sharp P K, Clayton J Q, Clark G. Fatigue Fract Eng Mater Struct, 1994, 17(3): 243 |
| [7] | Kunio N. Tetsu-to-Hagane, 1994, 80, N233 |
| [8] | Vohringer O. In: Wohlfahrt H, Kopp R, Vohringer O eds,Shot Peening Science Technology Application, Oberursel:Informationsgesellschaft Verlag, 1987:185 |
| [9] | Li J B. Chin J Mater Res, 1998; 12:287(李家宝.材料研究学报,1998;12:287) |
| [10] | Li J B. Liu F Z, Ji V. Surf Eng, 1998, 14:469 |
| [11] | Xu J H. Masters Thesis, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang, 2003(徐建辉.中国科学院金属研究所硕士学位论文,沈阳,2003) |
| [12] | Ji V, Zhang Y G, Chen C Q. Surf Coat Technol, 2000,130:95 |
| [13] | Ji N, Lebrun J L, Belliad P, Bourniquel B, Maeder G. In:Beck G, Denis S, Simon A eds, Proc of 2nd Int Conf On Residual Stresses, Int Conf on Residual Stresses, London:Elsevier Applied Science, 1989:65 |
| [14] | Hayden H W, Floreen S. Metall Trans, 1973, 4:561 |
| [15] | Liu S. Fatigue Performance and Strengthening Technology of Shot Peening for Metallic Materials. Beijing: Defence Industry Press, 1977:48(刘锁.金属材料的疲劳性能与喷丸强化工艺.北京:国防工业出版社,1977:48) |
| [16] | Ashby M F, Jones D R H. Engineering Materials. Oxford:Pergamon Press, 1980:105 |
| [17] | Wang R Z. J Mech Eng Mater, 1988; 68(5): 19(王仁智.机械工程材料,1988;68(5):19) |
| [18] | Feng D. Metallic Physics: Metal Mechanical Property.Beijing: Science Press, 1999:373(冯端.金属物理学-金属力学性质.北京:科学出版社,1999: 373) |
| [19] | Lai Z H. Crystal Defect and Mechanical Properties of Metals. Beijing: Metallurgical Industry Press, 1988:197(赖祖涵.金属的晶体缺陷与力学性质.北京:冶金工业出版社,1988:197) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%