|
|
|
| CRACK HEALING OF HYDROGEN-ATTACKED CRACKSIN CARBON STEEL UNDER HOT PLASTIC DEFORMATION |
| ; |
| 北京科技大学材料学院腐蚀与防护中心 |
|
Cite this article:
;. CRACK HEALING OF HYDROGEN-ATTACKED CRACKSIN CARBON STEEL UNDER HOT PLASTIC DEFORMATION. J Chin Soc Corr Pro, 2007, 27(2): 104-108 .
|
|
|
Abstract Healing of hydrogen-attacked (HA) cracks in carbon steel was studied by using hot press treatment.Under hot plastic deforming at 1000°C and the deformation rate of 40%,the most of HA cracks can be recovered completely within 15 min.Partial HA cracks,which has not been recovered by hot-press treatment,present the spherical cap-shaped with the length of about 4 μm～8 μm.Comparing with the results of high temperature treatment without press (cyclic heat treatment between room temperature and 1000 ℃ for 10 h),both the healing degree and speed under hot plastic deforming are improved obviously.There are not distinct difference of healing results between the direct hot-press healing and pre-heated treatment before hot-press healing.That means the decomposition of methane in HA cracks is not the key step during the whole healing process.
|
|
Received: 27 July 2005
|
|
|
[1]Wiederhorn S M,Townsend P R.Crack healing in glass[J].J.Amer-ican Ceramic Soc.,1970,53(9):486-489
[2]Wool R P,Connor K M.Theory of crack healing in polymers[J].J.Appl.Phy.,1981,52(10):5953-5963
[3]Wilson B A,Case E D.Diffusive crack-healing behavior in poly-crystalline alumina:a comparison between microwave annealing andconventional annealing[J].Mater.Res.Bulletin,1997,32(12):1607-1616
[4]Ando K,Chu M C,Takahashi K,et al.Crack-healing behavior ofSi3N4/SiC ceramics under stress and fatigue strength at the tempera-ture of healing(1000℃)[J].J.European Ceramic Soc.,2002,22:1339-1346
[5]Zhou G H,Gao K W,Qiao L J,et al.Atomistic simulation of microc-rack healing in aluminium[J].Mater.Sci.Eng.,2000,8:603-609
[6]Foct J,Akdut N,Gottstein G.Why are‘Duplex’microstructureseasier to form than expected[J].Scripta Metallurgica et Materialia,1992,27(8):1033-1038
[7]Wei D B,Han J T,Xie J X,et al.The experiment study of crackshealing in steel under hot plastic deformation[J].Acta Metall.Sin.,2000,36:622-625(韦东滨,韩静涛,谢建新等.热塑性变形条件下钢内部裂纹愈合的实验研究[J].金属学报,2000,36(6):622-625)
[8]Dong C F,Li X G,Shen Z S,et al.Study on crack healing of hydro-gen attack in carbon steel by heat treatment[J].Corrosion,2003,59(5):401-406
[9]Guo S J.Theory of Powder Sinter[M].Beijing:Metallurgical Indus-try Press,1998:86(果世驹.粉末烧结理论[M].北京:冶金工业出版社,1998:86)
[10]Vanderburg MW D,Vandergiessen E.Non-uniform hydrogen at-tack cavitation and the role of interaction with creep[J].Mater.Sci.Eng.A,1996,220:200-214
[11]Badisf,Zhang J S,Luo S J.Crystallization of Metal and Alloy UnderCompress Stress[M].Harbin:Harbin Industry University Press,1987:22(巴迪舍夫,张锦升,罗守靖.金属和合金在压力下结晶[M].哈尔滨:哈尔滨工业大学出版社,1987:22) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
