对超级双相不锈钢SAF2507分别在空气和3.5％ NaCl溶液中进行旋转弯曲疲劳实验,研究两种介质下SAF2507不锈钢的疲劳性能.结果表明:宏观上,双相不锈钢SAF2507在3.5％ NaCl腐蚀环境中的疲劳强度较空气中的下降幅度小,为空气下的90％.但微观上,空气中疲劳断口表现为韧性断裂,在铁素体和奥氏体相上呈现大量疲劳辉纹;腐蚀环境下,奥氏体为韧性断裂,而铁素体呈现解理断裂模式.两相上疲劳辉纹的宽度和间距随着晶粒位向及二次裂纹的开裂而不同.在奥氏体-铁素体双相不锈钢的疲劳断口中,不能根据疲劳辉纹的间距进行相的鉴别.
参考文献
| [1] | 吴玖.双相不锈钢[M].北京:冶金工业出版社,1999 |
| [2] | 邹德宁,韩英,张威,贾诣远.高温时效对2507超级双相不锈钢组织和性能的影响[J].材料热处理学报,2010(06):73-76. |
| [3] | 李少峰,任学平,李殊霞,李开松,徐辉.固溶温度对2205双相不锈钢超塑性的影响[J].塑性工程学报,2013(02):84-88. |
| [4] | Calliari I;Zanesco M;Ramous E .Influence of isothermal aging on secondary phases precipitation and toughness of a duplex stainless steel SAF 2205[J].Journal of Materials Science,2006(22):7643-7649. |
| [5] | I. Alvarez-Armas;U. Krupp;M. Balbi;S. Herenu;M. C. Marinelli;H. Knobbe.Growth of short cracks during low and high cycle fatigue in a duplex stainless steel[J].International Journal of Fatigue,2012:95-100. |
| [6] | I. Alvarez-Armas .Lowcycle fatigue behavior on duplex stainless steels[J].Transactions of the Indian Institute of Metals,2010(2/3):159-165. |
| [7] | M. Balbi;M. Avalos;A. El Bartali;I. Alvarez-Armas .Microcrack growth and fatigue behavior of a duplex stainless steel[J].International Journal of Fatigue,2009(11/12):2006-2013. |
| [8] | I-Hsuang Lo;Wen-Ta Tsai .Effect of selective dissolution on fatigue crack initiation in 2205 duplex stainless steel[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2007(4):1847-1861. |
| [9] | 高镇同;熊峻江.疲劳可靠性[M].北京:北京航空航天大学出版社,2000 |
| [10] | 寇生中,张亚男,魏代钢,周波.00Cr25Ni8Mo3CuN双相不锈钢的组织和性能研究[J].热加工工艺,2009(18):29-31. |
| [11] | K. Makhlouf;H. Sidhom;I. Triguia;C. Braham .Corrosion fatigue crack propagation of a duplex stainless steel X6 Cr Ni Mo Cu 25-6 in air and in artificial sea water[J].International Journal of Fatigue,2003(2):167-179. |
| [12] | MARROW T J;KING J E .Microstructural and environmental effects on fatigue crack propagation in duplex stainless steels[J].Fatigue and fracture of engineering materials and structures,1994,17(7):761-771. |
| [13] | KRISHNAN K N .Mechanism of corrosion fatigue in super duplex stainless steel in 3.5 percent NaCl solution[J].International Journal of Fracture,1997,88(3):205-213. |
| [14] | C. J. Park;V. Shankar Rao;H. S. Kwon .Effects of Sigma Phase on the Initiation and Propagation of Pitting Corrosion of Duplex Stainless Steel[J].Corrosion: The Journal of Science and Engineering,2005(1):76-83. |
| [15] | 赵志毅,徐林,李国平,薛润东,郑建华.超级双相不锈钢σ相析出及对组织性能的影响[J].材料热处理学报,2010(10):75-79. |
| [16] | 雒设计,郑新侠.敏化处理对2205双相不锈钢组织与力学性能的影响[J].材料工程,2011(05):76-80. |
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%