以X60和X70管线钢为研究对象,研究了管线钢中显微组织与断裂韧性之间的关系.结果表明,多边形铁素体对管线钢既有增韧性又有减韧性作用:当钢中分布细小的多边形铁素体晶粒时,多边形铁素体迫使裂纹分叉、弯曲和转向,导致裂纹的扩展功提高,增加了管线钢的韧性,而且随多边形铁素体含量增多,落锤撕裂试验断口纤维率也随之提高.然而,当多边形铁素体晶粒粗大且以绝对多的数量分布在基体中时,其增韧性作用消失.
参考文献
| [1] | 缪成亮,尚成嘉,王学敏,张龙飞,Mani Subramanian.高Nb X80管线钢焊接热影响区显微组织与韧性[J].金属学报,2010(05):541-546. |
| [2] | 邓伟,高秀华,秦小梅,赵德文,杜林秀,王国栋.X80管线钢的冲击断裂行为[J].金属学报,2010(05):533-540. |
| [3] | NIU Jing;QI Li-hua;LIU Ying-lai et al.Tempering microstructure and mechanical properties of pipeline steel X80[J].Transactions of Nonferrous Metals Society of China,2009,19(03):573-574. |
| [4] | Tanguy B;Luu T T;Perrin G et al.Plastic and damage behaviour of a high strength X100 pipeline steel:Experiments and modeling[J].International Journal of Pressure Vessels and Piping,2008,85(05):322-333. |
| [5] | Yang Z;Kim CB;Feng YR;Cho C .Abnormal fracture appearance in drop-weight tear test specimens of pipeline steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(0):239-241. |
| [6] | Byoungchul Hwang;Sunghak Lee;Young Min Kim .Analysis of abnormal fracture occurring during drop-weight tear test of high-toughness line-pipe steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):18-27. |
| [7] | X.B. Yang;Z. Zhuang;X.C. You .Dynamic fracture study by an experiment/simulation method for rich gas transmission X80 steel pipelines[J].Engineering Fracture Mechanics,2008(18):5018-5028. |
| [8] | 张自强;陈少华.高等断裂力学[M].北京:科学出版社,2009 |
| [9] | 哈宽富.断裂物理基础[M].北京:科学出版社,2000 |
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%