采用慢应变速率拉伸方法，研究了Fe-Si试样在空气中拉伸、动态充氢拉伸及在空气中预应变一定量后动态充氢拉伸等实验条件下的断裂过程．结果表明，只有在充氢过程中进行塑性变形才能引起氢致开裂，即塑性变形是氢致开裂的必要条件，氢致开裂过程是氢与位错交互作用的过程．
The fracture behaviors during hydrogen charging of Fe-3%Si single crystal was studied by lowstrain rate tension. The experiments included tension in air, tension during dynamically charging andcharging after certain pre-strain. The results indicated that hydrogen induced cracking can occur onlywhen the sample deformed during charging. That is, deformation is a necessary condition for hydrogeninduced cracking and hydrogen induced cracking results from the interaction between hydrogen anddislocation.
参考文献
| [1] | Hirth J P .Effect of hydrngen on the properties of iron and steel[J].Metallurgical and Materials Transactions,1980,11:861-873. |
| [2] | Sun S;Shiozawa K;Gu J;Cnen N J .Investigation of deformation field and hydrogen partition around crack tip in fcc single crystal[J].Metallurgical and Materials Transactions,1995,26:731-739. |
| [3] | Qiao L J;Chu W Y;Mao X .Critical hydrngen concentration for hydrogen-induced cracking of the 321 stainless steel[J].Corrosion,1996,52:275-279. |
| [4] | Rozenak P;Robertson I M;Bimbaum H K .HVEM studies of the effect of hydrogen on the deformation and fracture of AIS1 type 316 steel[J].冶金材料学报,1990,38:2031-2040. |
| [5] | Bimhaum H K;Sofronis P .Hydrogen-enhanced localized plasticity - a mechanism for hydlrogen related fracture[J].Materials Science and Engineering,1994,A176:191-202. |
| [6] | 李密丹;张天成;吕宏;褚武扬 .氢促进位错发射和运动导致裂纹形核的研究[J].中国科学E辑,1997,27:481-487. |
| [7] | Chu W Y;Liu T W;Hsiao C M .Mechanism of sstress corrosion cracking of low alloy steel[J].Corrosion,1981,37:320-325. |
| [8] | Chen S H;Katz Y;Gerbefich W W .Crack-tip strain field and fracture microplasticity in hydrogen induced cracking of Fe-3wt % Si singlecrystals[J].Philosophical Magazine,1991,63:131-155. |
| [9] | Abrahum D P;Altstertter C J .Hydrgn-nhancd caizatin f pasticity in an austnitic stainss st[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1995,26:2859-2871. |
| [10] | 张柏玉;刁凤琼;唐祥云 .20钢氢致开裂临界浓度与应力的关系[J].金属学报,1990,26:A454-459. |
| [11] | Wang Y B;Chu W Y;H siao C M .X-ray topographic study of hydrngen damage in Fe-3wt%Si steel[J].金属学报(英文版),1993,6:87-91. |
| [12] | MarrowT J;Aindow M;Prangnell P;Strangwood M,Knott J F .Hydrngen-assisted stable crack growth in Fe-3wt% Si steel[J].Acta Metallurgica et Materialia,1996,44:3125-3140. |
| [13] | Cao G Y;Dexter S C .Effect of hydrogen on creep behavior of Ti-6A1-4V alloy at roon temperature[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1987,18:1125-1130. |
| [14] | GuB;Chu W Y;Qiao L J .The facilitation effect of anodic polarization on ambient creep of brass[J].Corrosion Science,1994,36:1437. |
| [15] | Maier H J;Popp W;Kaesche H .Effects of hydrogen on ducdle fracture of a spheroidized low alloy steel[J].Materials Science and Engineering,1995,A191:17-26. |
| [16] | Keh A S;Weissmann S.Electron Microscopy and Strength of Crystals[M].Thoms G,WashburNew York:John Wiley and Sons,Inc,1963:231. |
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