用单边缺口拉伸试样研究了TiNi形状记忆合金在恒载荷下动态充氢时的滞后断裂过程,以及原子氢、氢致马氏体和氢化物在氢致滞后断裂中所起的作用结果表明,TiNi合金能发生氢致滞后断裂,归一化门槛应力强度因子随总氢浓度对数的增加而线性下降,即KIH/KIC=2.01-0.25lnCT.在恒载荷动态充氢时氢化物含量不断升高,材料的断裂韧性不断下降,这是氢致滞后断裂的主要原因;而原子氢和氢致马氏体在氢致滞后断裂中所起的作用则极小.
参考文献
[1] | Buchner H, Gutjahr M A, Beccu K D, Saufferer H. Z Metall, 1972; 63:497 |
[2] | Soubeyroux J L, Fruchart D. J Alloys Compds, 1993; 196:127 |
[3] | Adachi Y, Wade N, Hosoi Y. J Jpn Inst Metal, 1990; 54:525 |
[4] | Rotini A, Biscarini A, Campanella R, Coluzzi B, Mazzolai G, Mazzolai F M. Scr Mater, 2001; 44:719 |
[5] | Shorshorov M Kh, Stepanov I A, Flomenblit Yun, Travkin V V. Phys Met Metall, 1985; 60:109 |
[6] | Yokoyama K, Hamada K, Asaoka K. Mater Trans, 2001;42:141 |
[7] | Asaoka K, Yokoyama K, Nagumo M. Metall Mater Trans,2002; 32A: 495 |
[8] | Yokoyama K, Watabe S, Hamada K, Sqkai J, Asaoka K,Nagumo M. Mater Sci Eng, 2003; 741A: 91 |
[9] | Chu W Y, Qiao L J, Chen Q Z, Gao K W. Fracture and Delayed Fracture, Beijing: Science Press, 2001:126(褚武扬,乔利杰,陈奇志,高克玮.断裂与滞后断裂,北京:科学出版社,2001:126) |
[10] | Pan C, Su Y J, Chu W Y, Li Z B, Qiao L J. Corrosion Sci, 2002; 44:1983 |
[11] | PanC, ChuWY, LiZB, SuYJ, QiaoLJ. Sci in China,2002; 45E: 175 |
[12] | Gao K W, Wang Y B, Chu W Y. Sci in China, 1999; 42E:511 |
[13] | He J Y, Gao K W, Qiao L J, Chu W Y. Acta Metall Sin,2004; 40:291(何健英,高克玮,乔利杰,褚武扬,金属学报,2004;40:291) |
[14] | Zhang T, Chu W Y, Gao K W, Qiao L J. Mater Sci Eng,2003; A347:291 |
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