利用恒载荷试样和WOL试样研究了Ni3Al+NiAl双相合金中氢致裂纹形核的规律以及氢致滞后断裂归一化门槛应力σc/σf与试样中可扩散氢含量WH0的关系.结果表明,氢致裂纹择优在NiAl相中或Ni3Al/NiAl相界面处形核扩展;Ni3Al能阻碍氢致裂纹扩展恒载荷实验表明,氢致滞后断裂门槛应力随可扩散氢含量的对数线性下降,即σc/σf=0.58-0.042ln WH0.
参考文献
[1] | Xu K, Arsenault R J. Acta Metall, 1999; 47:3023 |
[2] | Deevi S C, Sikka V K. Intermetallic, 1996; 4:357 |
[3] | Sikka V K. Mater Sci Eng, 1992; 153A: 714 |
[4] | Lee J H, Choe B H, Kim H M. Mater Sci Eng, 1992; 152A:253 |
[5] | Liu C T. Scr Metall Mater, 1992; 27: 25 |
[6] | George E P, Liu C T, Pope D P. Acta Mater, 1996; 44:1757 |
[7] | Cohron J W, George E P, Heatherly L, Liu C T, Zee R H.Acta Mater, 1997; 45:2801 |
[8] | Schulson E M, Xu Y. Acta Mater, 1997; 45:3491 |
[9] | Wan X J, Zhu J H, Jin K L, Liu C T. Scr Metall Mater,1994; 31:677 |
[10] | Bergmann G, Vehoff H. Mater Sci Eng, 1995; 192A: 309 |
[11] | Wright J L, Zhu J H. Scr Mater, 1998; 38:253 |
[12] | Nishimura C, Liu C T. Scr Metall Mater, 1991; 25:791 |
[13] | Chu W Y, Yao J, Hsiao C M. Metall Trans, 1984; 15A:729 |
[14] | Chu W Y. Hydrogen-Induced Plasticity Loss and Delayed Cracking. Beijing: Metallurgical Industry Press, 1988:254(褚武扬.氢损伤与滞后断裂.北京:冶金工业出版社,1988:254) |
[15] | Li M D, Lü H, ZhangT C, ChuWY. Sci Chin, 1997;40E: 530 |
[16] | Chu W Y, Qiao L J, Wang Y B. Corrosion, 1999; 55:667 |
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