利用裂纹面分离及SEM和EDS研究了L360MCS钢焊接热影响区(HAZ)在湿H2S环境中的应力导向氢致开裂(SOHIC)行为.结果表明:应力导向氢致开裂裂纹由轴向和纵向两种裂纹组成,先形成轴向裂纹,后形成纵向裂纹,两种裂纹均独立形核.裂纹带有明显的阶梯状氢致开裂特征,裂纹面呈现准解理型断口形貌.拉应力在裂纹形核和扩展方面起主要作用,拉应力不仅增加了拉伸区的过饱和氢浓度,而且直接推动纵向裂纹的扩展. 轴向裂纹在MnS和CaS夹杂以及析出相处形核,以氢压为主要的裂纹扩展动力.而纵向裂纹则主要在析出相处萌生,裂纹扩展受拉应力和氢压双重控制,拉应力为主导.
参考文献
| [1] | Pargeter R J.In:NACE,ed.,Corrosion 2007,Houston,TX:NACE,2007:115 |
| [2] | Guo H,Li G F,Cai X,Yang W.Ada Metall Sin,2004;40:967(郭浩,李光福,蔡殉,杨武.金属学报,2004;40:967) |
| [3] | Ren X C,Wu M,Chu W Y,Li J X,Jiao L J,Jiang B,Chen G,Cui Y H.Ada Metall Sin,2007; 43:149(任学冲,武明,褚武扬,李金许,乔利杰,江波,陈刚,崔银会.金属学报,2007;43:149) |
| [4] | Liu Z Y,Zhai G L,Dui C W,Li X G.Ada Metall Sin,2008; 44:209(刘智勇,翟国丽,杜翠薇,李晓刚.金属学报,2008;44:209) |
| [5] | Guo J,Yang S W,Shang C J,Wang Y,He X L.Corros Sci,2008; 51:242 |
| [6] | Ernesto V,Andrej A.Eng Fail Anal,2009; 16:164 |
| [7] | Cayard M S,Kane R D,Cooke D L.In:NACE,ed.,Corrosion 97,Houston,TX:NACE,1997:525 |
| [8] | Cayard M S,Kane R D,Horvath R J.In:NACE ed.,Corrosion 2002,Houston,TX:NACE,2002:554 |
| [9] | Orie K E,Fletcher F B.In:NACE,ed.,Corrosion 99,Houston,TX:NACE,1999:632 |
| [10] | NACE International.NACE Standard MR0177-2005,Houston,2005 |
| [11] | ASTM.ASTM Standard G39-99,Philadelphia,2005 |
| [12] | NACE International.NACE Standard MR0284-2003,Houston,2003 |
| [13] | Zhao M C,Shan Y Y,Qu J B,Xiao F R,Zhong Y,Yang K.In:CSM ed.,CSM 2001 Annual Meeting Proceedings.Beijing:Metallurgical Industry Press,2001:891(赵明纯,单以银,曲锦波,肖福仁,仲勇,饧柯.见中国金属学会主编,2001年中国钢铁年会论文集.北京:冶金工业出版社,2001:891) |
| [14] | Lee H W.Mater Sci Eng,2007; A445:328 |
| [15] | Sojka J,Jerome M,Sozanska M,Vanova P,Rytirova L,Jonsta P.Mater Sci Eng,2008; A430:237 |
| [16] | Wan K K,Seong U K,Boo Y Y,Kyoo Y K.Corros Sci,2008; 50:3336 |
| [17] | Parkins R N.Corrosion,1987; 43:130 |
| [18] | Chu R,Chen W,Wang S H.Corrosion,2004; 60:275 |
| [19] | Lynch S P.In:NACE,ed.,Corrosion 2007,Houston,TX:NACE,2007:493 |
| [20] | Maroecic P,Mclellan R B.Acta Metall,1998; 46:5593 |
| [21] | Zang D,MeLellan R B.Acta Metall,1999; 47:1671 |
| [22] | Harada S,Ono D,Sugimoto H,Fukai Y.J Alloys Compd,2007; 446:474 |
| [23] | Rebak R B,Xia Z,Safruddin R,Szklarska S Z.Corrosion,1996; 52:396 |
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%