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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Al-Cu合金中PLC效应时域和空域行为的实验研究
, PP. 727-732
Keywords: Al--Cu合金,PLC效应,动态应变时效
Abstract:
在不同拉伸应变速率下,得到了Al--Cu合金中PLC(Portevin--LeChatelier)效应在时域上的三类“锯齿形”应力--时间曲线,比较并研究了三种曲线的异同及其产生的定性解释。与之相对应,观察并分析了PLC效应空域上三种类型PLC变形带的空间传播特性.针对3mm厚的试件,探讨了在不同拉伸应变率下，类型A和B的PLC变形带的传播速率随变形过程的演化；得到了在相同应变下,变形带的传播速率和加载应变速率之间的幂律关系。同时,还将时域上的“锯齿形”应力--时间曲线与空域上的带的传播位置－时间曲线相对应,得到了PLC效应发生时宏观上时域和空域之间的关系。另外,还讨论了试件厚度对PLC变形带的空间相关性的影响。
| [1] | Portevin A, Le Chatelier F. Comp Rend Acad Sci Paris, 1923; 176: 507
|
| [2] | Bell J F. Encyclopedia of Physics, Mech Solids I, Vol. VIa/1. Berlin, 1973; Sect. 2.11:41-44, Sect. 4.31: 649
|
| [3] | Cottrell A H. Dislocations and Plastic Flow in Crystals, London: Oxford University Press, 1953
|
| [4] | Lebyodkin M, Dunin-Barkowskii L, Brechet Y, Estrin Y, Kubin L P. Acta Mater, 2000; 48: 2529
|
| [5] | Pink E, Weinhandl H. Scr Mater, 1998; 39: 1309
|
| [6] | Tian B H, Zhang Y G, Chen C L. Acta Metall Sin, 1996; 32: 249 (田宝辉,张永刚,陈昌麟．金属学报, 1996;32:249)
|
| [7] | Tian B H, Li H X, Zhang Y G, Chen C L Q. Acta Metall Sin, 1998; 34: 603 (田宝辉,李焕喜,张永刚,陈昌麒．金属学报,1998;34:603)
|
| [8] | Ziegenbein A, Hahner P, Neuhauser H. Comput Mater Sci, 2000; 19: 27
|
| [9] | Zhang Q C, Toyooka S, Meng Z B. Process SPIE, 1999; 3585
|
| [10] | Pink E, Grinberg A, Mater Sci Eng, 1981; A51: 1
|
| [11] | Chihab K, Estrin Y, Kubin L P. Scr Metall, 1987; 21: 203
|
| [12] | Jiang H F, Zhang Q G, Jiang Z Y, Zhao S M, Chen Z J, Wu X P. J Exp Mech, in press (江慧丰,张青川,蒋震宇,赵思敏,陈忠家,伍小平．实验力 学,in press)
|
| [13] | Hahner P, Ziegenbein A, Rizzi E, Neuhauser H. Phys Rev , 2002; 65B: 134/09-1
|
| [14] | Klose F B, Zigenbein A, Hagemann F, Neuhauser H, Hahner P, Abbsdi M, Zeghloul A. Mater Sci Eng, 2004; 369A: 76
|
| [15] | Miguel M C, Vespignani A, Zapperi S, Weiss J, Grasso J R. Nature, 2001; 410: 667
|
| [16] | McGormick P G. Ada Metall, 1972; 20: 351
|
| [17] | Wang Y, Srolovitz J, Rickman J M, Lesar R. Acta Mater, 2000; 48: 2163
|
| [18] | Kubin L P, Estrin Y. Acta Metall Mater, 1990; 38: 697
|
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