采用双螺杆机械搅拌制浆机和半固态流变压铸成形工艺制备AZ91D镁合金半固态浆料,研究了材料性能与微观组织之间的关系.结果表明,随着镁液的浇注温度或搅拌机筒体温度的降低,半固态浆料的固相率越高,初生α-Mg相晶粒变得更细小和圆整,筒体温度比镁液浇注温度的影响更显著.当浆料固相率控制在30%~45%时,半固态流变压铸成形镁合金铸件具有较高的抗拉强度和延伸率;随着晶粒平均尺寸的增加,材料的力学性能逐渐降低.提出了高剪切速率下流变压铸成形非枝晶组织的形成机理.
参考文献
[1] | D.H.Kirkwood,International Materials Reviews,39(5),173(1994) |
[2] | Z.Fan,International Materials Reviews,47(2),49(2002) |
[3] | M.C.Flemings,Metallurgical Transactions A,22A(5),957(1999) |
[4] | MAO Weimin,YIN Aimei,ZHONG Xueyou,Chinese Journal of Materials Research,19(4),401(2005)(毛卫民,殷爱美,钟雪友,材料研究学报,19(4),401(2005)) |
[5] | H.Watari,K.Davey,M.T.Rasgado,T.Haga,S.Izawa,Journal of Materials Processing Technology,155(10),1662(2004) |
[6] | LI Yuandong,HAO Yuan,YAN Fengyun,Journal of Gansu University of Technology,28(2),34(2002)(李元东,郝远,阎峰云,甘肃工业大学学报,28(2),34(2002)) |
[7] | CUI Jianzhong,LU Guimin,LIU Dan,DONG Jie,Journal of Harbin Institute of Technology,32(4),110(2000)(崔建忠,路贵民,刘丹,董洁,哈尔滨工业大学学报,32(4),110(2000)) |
[8] | H.Kanfmann,R.Potzinger,Die-Casting Engineer,(7),16(2002) |
[9] | S.Kamado,A.Yuasa,T.Hitomi,Y.Kojima,Journal of Japan Institute of Light Metals,42(12),734(1992) |
[10] | ZHEN Zisheng,MAO Weimin,ZHAO Aimin,Special Casting & Nonferrous Alloy,(6),32(2001)(甄子胜,毛卫民,赵爱民,特种铸造及有色合金,(6),32(2001)) |
[11] | ZHEN Zisheng,MAO Weimin,CHEN Hongtao,Journal of University of Science and Technology Beijing,25(4),341(2003)(甄子胜,毛卫民,陈洪涛,北京科技大学学报,25(4),341(2003)) |
[12] | M.T.Shehata,E.Essadiqi,V.Kao,Proceedings of the 7th on Semi-Solid Processing of Alloys and Composites,Tsukuba,Japan,263(2002) |
[13] | LE Qichi,OU Peng,CUI Jiangzhong,LU Guimin,Journal of Northeastern University(Natural Science),23(4),371(2002)(乐启炽,欧鹏,崔建忠,路贵民,东北大学学报(自然科学版),23(4),371(2002)) |
[14] | F.Czerwinski,A.Zielinska-Lipiec,Acta Mater.,(49),1225(2001) |
[15] | F.Czerwinski,A.Zielinska-Lipiec,Proceedings of the 7th on Semi-Solid Processing of Alloys and Composites.Tsukuba,Japan,275 (2002) |
[16] | J.J.Blandin,D.Giunchi,Materials Science and Technology,49(3),333(2002) |
[17] | H.Kaufmann,R.Potzinger,Light Metal Age,(2),56(2001) |
[18] | Z.Koren,H.Rosenson,E.M.Gutman,Journal of Light Metals,(2),81(2002) |
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:
-
10%
-
20%
-
30%
-
40%
-
50%