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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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等通道转角挤压Al--Cu合金的应力和应变疲劳行为比较
, PP. 380-384
Keywords: 等通道转角挤压,Al-0.7%Cu合金,循环软化
Abstract:
通过恒应力和恒塑性应变控制疲劳实验,比较了等通道转角挤压四道次的Al-0.7%Cu(质量分数)合金的疲劳寿命、表面变形形貌、疲劳开裂和疲劳断口。结果表明样品发生明显的循环软化,致使应变和应力疲劳寿命在高、低应力范围存在差别。在应变控制疲劳样品中,塑性变形既可由剪切带来承担,也可以由剪切带和形变带共同承担,进而疲劳裂纹分别沿剪切带或形变带萌生。而应力控制疲劳的塑性变形只集中在剪切带中,并导致剪切疲劳开裂。疲劳断口上存在典型的疲劳裂纹萌生区、缓慢扩展区、快速扩展区和最后瞬断区。
| [1] | WWang Y M, Chen M W, Zhou F H, Ma E. Nature, 2002; 419: 912
|
| [2] | VValiev R Z. Adv Eng Mater, 2003; 5: 296
|
| [3] | AAgnew S R, Weertman J R. Mater Sci Eng, 1998; A244: 145
|
| [4] | HHoppel H W, Zhou Z M, Mughrabi H, Valiev R Z. Philos Mag, 2002; A82: 1781
|
| [5] | WWu S D, Wang Z G, Jiang C B, Li G Y. Scr Mater, 2003; 48: 1605
|
| [6] | Vinogradov A Yu, Patlan V, Hashimoto S, Kitagawa K. Philos Mag, 2002; A82: 317
|
| [7] | Vinogradov A, Nagasaki S, Patlan V, Kitagawa K, Kawa zoe M. Nanostruct Mater, 1999; 11: 925
|
| [8] | Vinogradov A, Washikita A, Kitagawa K, Kopylov V I. Mater Sci Eng, 2003; A349: 318
|
| [9] | Chung C S, Kim J K, Kim H K, Kim W J. Mater Sci Eng, 2002; A337: 39
|
| [10] | Liu S M, Wang Z G. Scr Mater, 2003; 48: 1421
|
| [11] | Vinogradov A, Hashimoto S, Kopylov V I. Mater Sci Eng, 2003; A355: 277
|
| [12] | Vinogradov A, Patlan V, Suzuki Y, Kitagawa K, Kopylov V I. Ada Mater, 2002; 50: 1639
|
| [13] | Kim H K, Choi M I, Chung C S, Shin D H. Mater Sci Eng, 2003; A340: 243
|
| [14] | Vinogradov A Y, Stolyarov V V, Hashimoto S, Valiev R Z. Mater Sci Eng, 2001; A318: 163
|
| [15] | Polmear I J. Light Alloys. Edward Arnold, 1981
|
| [16] | Li S X, Li X W, Zhang Z F, Wang Z G. Philos Mag, 2002; A82: 867
|
| [17] | Suresh S. Fatigue of Materials (2nd ed). UK, Cambridge: Cambridge Press, 1998
|
| [18] | SSegal V M. Mater Sci Eng, 1995; A197: 157
|
| [19] | VValiev R Z. Prog Mater Sci, 2000; 45: 103
|
| [20] | IIwahashi Y, Horita Z, Nemoto M, Longdon T G. Acta Mater, 1997; 45: 4733
|
| [21] | IIwahashi Y, Horita Z, Nemoto M, Longdon T G. Acta Mater, 1998; 46: 3317
|
| [22] | Mughrabi H. Plastic Deformation and Fracture of Materials. UK, Cambridge: Cambridge Press, 1993
|
| [23] | Zheng L J, Chen C Q, Zhou T T, Liu P Y, Zeng M G. Mater Charact, 2003; 49: 455
|
| [24] | Zhang Z F, Wang Z G, Sun Z M. Ada Mater, 2001; 49: 2875
|
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