用Hopkinson杆实验装置在不同温度下对LY12铝合金进行动态压缩实验.采用XRD线形分析对压缩试样的微细观结构演化进行研究.由XRD的积分宽度确定试样中位错为刃型位错.衍射峰形的Fourier分析表明,在动态加载下,材料内部的位错密度在塑性流动的初期迅速趋于饱和,且随着测试温度的升高,位错密度呈递减趋势,同时亚结构的尺寸不断增加.衍射峰形分析结果显示在280-300℃之间亚结构尺寸迅速增长,与LY12铝合金在280℃附近发生第二相粒子的溶解对应.
参考文献
[1] | Wilkens M.Krtst Technol,1976;11:1159 |
[2] | Langford J I,Lou(e)r D,Scardi P.J Appl Cryst,2000;33:964 |
[3] | Scardi P,Leoni M.Acta Cryst,2001;57A:604 |
[4] | Ungár T,Gubicza J,Ribárik G,Borbély A.J Appl Cryst,2001;34:298 |
[5] | Williamson G K,Hall W H.Acta Metall,1953;1:22 |
[6] | Klug H P,Alexander L E.X-Ray Diffraction Procedures for Polycrystalline and Amorphous Materials.New York:John Wiley,1974:634 |
[7] | Balzar D,Popovi(c) S.J Appl Cryst,1996;29:16 |
[8] | Warren B E,Averbach B L.J Appl Phys,1950;21:595 |
[9] | Warren B E.X-Ray Diffraction.Reading:AddisonWesley,1969:264 |
[10] | Stephens P W.J Appl Cryst,1999;32:281 |
[11] | Popa N C.J Appl Cryst,1998;31:176 |
[12] | Krivoglaz M A,Ryaboshapka K P.Phys Met Metallogr,1963;15:18 |
[13] | Krivoglaz M A,Martynenko O V,Ryaboshaplm K P.Phys Met MetaUogr,1983;55:318 |
[14] | Krivoglaz M A.X-Ray and Neutron Diffraction in Nonideal Crystals.New York:Springer-Verlag,1996:357 |
[15] | Wilkens M.Phys Status Solidi,1970;2A:359 |
[16] | Wilkens M.In:Simmons J A,De Wit R,Bullough R,eds.,Fundamental Aspects of Dislocation Theory National Bureau of Standards Special Publication 317(II).Washington DC:National Bureau of Standards,1970:1195 |
[17] | Wilkens M.Phys Status Solidi,1987;104A:K1 |
[18] | Klimanek P,Kuzel R.J Appl Cryst,1988;21:59 |
[19] | Kuzel R,Klimanek P.J Appl Cryst,1988;21:363 |
[20] | Ungár T,Tichy G.Phys Status Solidi,1999;171A:425 |
[21] | Gubicza J,Kassem M,Ribárik G,Ungáx T.Mater Sci Eng,2004;A372:115 |
[22] | Fátay D,Bastarash E,Nyilas K,Dobatkin S,Gubicza J,Ungár T.Z Metall,2003;94:1 |
[23] | Ungár T,Borbély A.Appl Phys Lett,1996;69:3173 |
[24] | De Keijser T H,Langford J I,Mittemeijer E J,Vogels A B P.J Appl Cryst,1982;15:308 |
[25] | Thompson P,Cox D E,Hastings J B.J Appl Cryst,1987;20:79 |
[26] | Dieter G E.Mechanical Metallurgy.New York:McGrawHill,1988:58 |
[27] | Ungár T.Mater Sci Eng,2001;A309-310:14 |
[28] | Ungár T,Tichy G,Gubicza J,Hellming R J.Powder Diffr,2005;20:366 |
[29] | Ungár T,Gubicza J,Haánk P,Alexandrov I.Mater Sci Eng,2001;A319-321:274 |
[30] | Valiev R Z,Islamgaliev R K,Alexandrov I V.Prog Mater Sci,2000;5:103 |
[31] | Estrin Y,Molinari,Toth L S,Brechet Y.Acta Mater,1998;46:5509 |
[32] | Arzt E,Ashby M F,Verrall R A.Acta Metall,1983;31:1977 |
[33] | Brammer J A,Percival C M.Exp Mech,1970;10(6):245 |
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