欢迎登录材料期刊网

材料期刊网

高级检索

将电磁场引入到Inconel 625合金的凝固过程中,研究电磁力对合金凝固组织和力学性能的影响.结果表明,电磁场可显著细化合金晶粒,但当施加不合理的电流强度和频率时,电磁场会加速凝固前沿的熔体对流,导致凝固末端产生更严重的枝晶偏析,形成更多的共晶组织.微观表征结果表明,电磁场作用下Nb和Mo元素偏析比的增大,是共晶组织含量增多的根本原因.晶粒细化和共晶组织增多共同影响了合金的室温拉伸性能,使合金屈服强度提高、拉伸塑性下降.合理控制电流强度及频率大小可有效控制共晶组织分数.当施加电磁场的电流强度为100 A,频率为8 Hz时,合金中共晶组织含量最少,合金在不损失塑性的前提下屈服强度提高30%以上.

参考文献

[1] Barker J F,Cox J D,Margolin E.Met Prog,1968; 93:91
[2] Eiselstein H L,Tillack D J.In:Loria E A ed.,Superalloys 718,625,and Various Derivatives,Warrendale,PA:The Minerals,Metals & Materials Society,1991:1
[3] Yang W H,Chen W,Chang K M.In:Pollock T M ed.,Superalloys 2000,Nashville:The Minerals,Metals & Materials Society,2000:75
[4] Cieslak M J,Headley T J,Kollie T,Romig A D.Metall Mater Trans,1988; 19A:2319
[5] Dupont J N.Metall Mater Trans,1996; 27A:3612
[6] Dong J X,Zhang M C,Zeng Y P,Xie X S.Acta Metall Sin (Engl Lett),2005; 18:47
[7] Guo J T.Materials Science and Engineering for Superalloys (Volume 2).Beijing:Science Press,2008:1(郭建亭.高温合金材料学(中册).北京:科学出版社,2008:1)
[8] Flemings M C.Solidification Processing.New York:McGraw-Hill,1974:38
[9] Flemings M C.ISIJ Int,2000; 40:833
[10] Xu F J,Lv Y H,Liu Y X,Shu F Y,He P,Xu B S.J Mater Sci Technol,2013; 29:480
[11] Moffatt H K.Phys Fluids,1991; 3A:1336
[12] Metana V,Eigenfelda K,P(a)bigerb D,Leonhardtb M,Eckertb S.J Alloys Compd,2009; 487:163
[13] Wang X D,Li T J,Jin J Z.Acta Metall Sin,2001; 37:971(王晓东,李廷举,金俊泽.金属学报,2001:37:971)
[14] JinW Z,LiJ,LiT J,Yin G M.J Vac Sci TechnolSin,2008; (6):28(金文中,李军,李廷举,殷国茂.真空科学与技术学报,2008;(6):28)
[15] Chang K M,Lai H J,Hwang J Y.In:Loria E A ed.,Superalloys 718,625,and Various Derivatives,Nashville:The Minerals,Metals & Materials Society,1994:683
[16] Schneider M C,Gu J P,Beckermann C,Boettinger W J,Kattner U R.Metall Mater Trans,1997; 28A:1517
[17] Cieslak M J,Knorovsky G A,Headley T J,Romig A D.In:Loria E A ed.,Superalloys 718,Nashville:The Minerals,Metals & Materials Society,1989:59
[18] Garabedian H,Strick-Constable R F J.J Cryst Growth,1974; 22:188
[19] Xin X,Huang A H,Qi F,Zhang W H,Liu F,Yang H C,Sun W R,Hu Z Q.Acta Metall Sin,2010; 46:873(信昕,黄爱华,祁峰,张伟红,刘芳,杨洪才,孙文儒,胡壮麒.金属学报,2010; 46:873)
[20] Guo D Y,Yang Y S,Tong W H,Hua F A,Cheng G F,Hu Z Q.Acta Metall Sin,2003; 39:914(郭大勇,杨院生,童文辉,花福安,程根发,胡壮麒.金属学报,2003; 39:914)
[21] Xiong Y H,Li P J,Yang A M,Yan W D,Zeng D B,Liu L.Acta Metall Sin,2002,38:534(熊玉华,李培杰,杨爱民,严卫东,曾大本,刘林.金属学报,2002;38:534)
[22] Epishin A,Link T,Bruckner U,Fedelich B,Portella P.In:Green K A ed.,Superalloys 718,Nashville:The Minerals,Metals & Materials Society,2004:537
[23] Nader E B,Yamamoto K,Miyahara H,Keisaku O.Mater Trans,2005; 46:909
[24] Chen W.PhD Dissertation,West Virginia University,2006
[25] Kaddah N E,Natarajan T T.In:Cleary P Wed.,Second International Conference on CFD in the Minerals and Process Industries,Melbourne:CSIRO,1999:339
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%