|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
冷却速率对GWZ1032K合金中14H-LPSO结构形成的影响
DOI: 10.3724/SP.J.1037.2010.00177, PP. 1192-1199
Keywords: 14H-LPSO结构,冷却速率,Mg-Gd-Y-Zn合金,？χ相
Abstract:
采用金属型铸造和慢速凝固,在不同冷却速率下制备了Mg-10Gd-3Y-1.8Zn-0.5Zr(质量分数,%)(GWZ1032K)合金.采用SEM,TEM和XRD研究了冷却速率不同的GWZ1032K合金的组织和相构成.在GWZ1032K合金中,α-Mg基体中的层片状14H-LPSO结构随着冷却速率的下降而增加,在冷却速率为0.005℃/s的试样中充满了整个晶粒;随着合金冷却速率降低,GWZ1032K合金中晶界第二相分别由5℃/s时的(Mg,Zn)3RE相转变为0.5和0.1℃/s时的(Mg,Zn)3RE相和14H-LPSO结构的χ相共存;在0.01和0.005℃/s时只有14H-LPSO结构的$\chi$相.结果显示在接近于平衡凝固的缓慢冷速条件下,更容易形成具有稳定结构的层片状14H-LPSO结构和χ相.在冷却速率为0.5和0.1℃/s时,(Mg,Zn)3RE共晶相和χ相共存,(Mg,Zn)3RE共晶相和χ相的位向关系为[110]χphase//[223](Mg,Zn)3RE和∠g(001)χphaseg(110)(Mg,Zn)3RE=8.4°.
| [1] | Ping D H, Hono K, Nie J F. Scr Mater, 2003; 48: 1017
|
| [2] | Datta A, Waghmare U V, Ramamurty U. Acta Mater, 2009; 11: 2531
|
| [3] | Ding W J, Wu Y J, Peng L M, Zeng X Q, Yuan GY. J Mater Res, 2009; 24: 1842
|
| [4] | Polmear I J. Mater Trans, 1996; 37: 12
|
| [5] | Froes F H, Eliezer D, Aghion E. JOM, 1998; 50: 30
|
| [6] | Kawamura Y, Hayashi K, Inoue A, Masumoto T. Mater Trans, 2001; 42: 1172
|
| [7] | Inoue A, Kawamura Y, Matsushita M, Hayashi K, Koike J. J Mater Res, 2001; 16: 1894
|
| [8] | Homma T, Kunito N, Kamado S. Scr Mater, 2009; 61: 644
|
| [9] | Kawamura Y, kasahara Y, Izumi S, Yamasaki M. Scr Mater, 2006; 55: 453
|
| [10] | YamasakiM, SasakiM, NishijimaM, Hiraga K, Kawamura Y. Acta Mater, 2007; 55: 6798
|
| [11] | Yamasaki M, Anan T, Yoshimoto S, Kawamura Y. Scr Mater, 2005; 53: 799
|
| [12] | Honma T, Ohkubo T, Kamado S, Hono K. Acta Mater, 2007; 55: 4137
|
| [13] | Wu Y J, Zeng X Q, Lin D L, Peng L M, Ding W J. J Alloys Compd, 2009; 477: 193
|
| [14] | Wu Y J, Lin D L, Zeng X Q, Peng L M, Ding W J. J Mater Sci, 2009; 44: 1607
|
| [15] | He S M, Zeng X Q, Peng L M, Guo X W, Chang J W, Ding W J. Mater Sci Forum, 2007; 101: 546
|
| [16] | Perminov V P. Powder Metall Met Ceram, 1967; 6: 409
|
| [17] | Liu X H, Johnson W L. J Appl Phys, 1995; 78: 6514
|
| [18] | Zhu Y M, Morton A J, Nie J F. Acta Mater, 2010; 58: 2936
|
| [19] | Itoi T, Seimiya T, Kawamura Y, Hirohashi M. Scr Mater, 2004; 51: 107
|
| [20] | Ping D H, Hono K, Kawamura Y, Inoue A. Philos Mag Lett, 2002; 82: 543
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
