通过高速CCD(1000 fps)连续记录Al-4%Cu合金材料在拉伸实验中出现的B型锯齿形屈服(PLC)剪切带发生前后一系列非相干光散斑图,结合数字散斑相关法图像分析技术,定量地给出了PLC剪切带及周围区域的位移和应变的空间分布,再现了PLC剪切带随时间演化发展的过程.实验结果清楚地证实了B型PLC剪切带的一种演化机制,即先在试样一侧成核,然后与拉伸轴成一定角度横向贯穿整个试样,最终形成非均匀塑性变形带.实验结果表明,在PLC剪切带形成瞬间变形带外存在弹性收缩变形.
参考文献
| [1] | Potevin A,Le Chatelier F.Comp Rend Acad Sci (Paris),1923; 176:507 |
| [2] | Chihab K,Estrin Y,Kubin L P.Scr Metall,1987; 21:203 |
| [3] | Cottrell A H.Dislocation and Plastic Flow in Crystals.Chapter 4,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; 29:1309 |
| [6] | Tian B H,Zhang Y G,Chen C Q.Acta Metall Sin,1996;32:249(田宝辉,张永刚,陈昌麒.金属学报,1996;32:249) |
| [7] | Tian B H,Li H X,Zhang Y G,Chen C 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,Hadner P,Neuhauser H.Comput Mater Sci,2000; 19:27 |
| [9] | Zhang Q C,Toyooka S,Meng Z B,Suprapedi.In:Backlini G Y,Nove C A,Boltz E S,eds.,Nondestructure Evaluation of Aging Materials and Composites Ⅲ,Vol.3585,Newport Beach,CA,SPIE,1999:389 |
| [10] | Zhang Q C,Jiang Z Y,Jiang H F,Chen Z J,Wu X P.Int J Plast,2005; 21:2150 |
| [11] | Jiang H F,Zhang Q C,Jiang Z Y,Chen Z J,Wu X P.Chin Phys Lett,2005; 22:99 |
| [12] | Jiang H F,Zhang Q C,Jiang Z Y,Wu X P.Acta Metall Sin,2005; 41:727(江慧丰,张青川,蒋震宇,伍小平.金属学报,2005;41:727) |
| [13] | Jiang Z Y,Zhang Q C,Jiang H F,Chen Z J,Wu X P.Mater Sci Eng,2005; A403:154 |
| [14] | Jiang Z Y,Zhang Q C,Wu X P.J Exp Mech,2003; 18:289(蒋震宇,张青川,伍小平.实验力学,2003;18:289) |
| [15] | Tong W,Tao H,Zhang N,Hector L G Jr.Scr Mater,2005; 53:87 |
| [16] | Yamaguchi I.Opt Acta,1981; 28:1359 |
| [17] | Peters W H,Ranson W F.Opt Eng,1982; 21:427 |
| [18] | Zeng Q H,Lu D T.J Eng Graph,2004; 25(1):84(曾清红,卢德唐.工程图学学报,2004;25(1):84) |
| [19] | Estrin Y,Kubin L P.Acta Metall,1986; 34:2455 |
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