对采用近液相线半连续铸造技术制备的AlSiTMgBe合金坯料进行半固态挤压成形,通过组织与性能的分析,研究了AlSi7MgBe合金的半固态挤压成形性.结果表明:用近液相线半连续铸造技术制备的AlSiTMgBe合金坯料具有均匀,细小的蔷薇状组织,在575℃对其二次加热可获得稳定的、适合于半固态触变成形的球化组织,进行半固态挤压成形可获得表面光洁,组织细小,分布均匀的成形件,在540℃固溶5 h然后175℃时效10 h处理,其抗拉强度为325 MPa,伸长率为14.6%,表明具有良好的半固态挤压成形性.
参考文献
| [1] | M.C.Fleming,R.A.Maxtinez,in Proceedings of the 9th Inter.Conf.on Semi-Solid Processing of Alloys and Composites,Principles of microstructural formation in semisolid metal processing,edited by C.G.Kang,S.K.Kim,S.Y.Lee (Korea,Bnsan,Trans Tech Publications Ltd,2006) p.1 |
| [2] | M.Suery,C.L.Martin,L.Salvo,in Proceedings of the 4th Inter.Conf.on Semi-Solid Processing of Alloys and Composites,Overview of the Rheological Behaviour of Globular and Dendritic Slurries,edited by D.H.Kirkwood,P.Kapranos,(Sheffield,the University of Sheffield,1996) p.21 |
| [3] | J.A.Yurko,R.A.Martinez,M.C.Flemings,in Proceedings of the 7th Inter.Conf.on Semi-Solid Processing of Alloys and Composites,Development of the Semi-Solid Rheocasting(SSR) Processing,edited by Y.Tsutsui,M.Kiuchi,K.Ichikawa (Japan,Tsukuba,National Institute of Advanced Industrial Science & Technology and Japan Society for Technology of Plasticity,2002) p.659 |
| [4] | LU Guimin,DONG Jie,CUI Jianzhong,WANG Ping,Study on the reheating and thixoforming of 7075 aluminum alloy cast by liquidns semi--continuous casting,Acta Metallrugica Sinica,37(11),1184(2001)(路贵民,董杰,崔建忠,王平,液相线半连续铸造7075A1合金二次加热与触变成形,金属学报,37(11),1184(2001)) |
| [5] | D.G.Altenpohl,Thixotropic alumimum summary and future prospects,Aluminum,(10),694(1996) |
| [6] | M.S.Lewandowski,R.A.Overfelt,High temperature deformation behavior of solid and semi-solid alloy 718,Acta Mater,47(18),4695(1999) |
| [7] | C.G.Kang,J.S.Choi,K.H.Kim,The effect of strain rate on macroscopic behavior in the compression forming of semi-solid aluminum alloy,Materials Processing Technology,88,159(1999) |
| [8] | H.V.Atkiuson,D.Liu,in Proceedings of the 7th Inter.Conf.on Semi-Solid Processing of Alloys and Composites,Development of high performance aluminiu alloys for thixocasting,edited by Y.Tsutsui,M.Kiuchi,K.Ichikawa (Japan,Tsukuba,National Institute of Advanced Industrial Science & Technology and Japan Society for Technology of Plasticity,2002) p.51 |
| [9] | J Dong,J.Z.Cui,Q.C.Le,G.M.Lu,Liquidus semicontinuous casting,reheating and thixoforming of a wrought aluminum alloy 7075,Materials Science & Engineering A,A345,234(2003) |
| [10] | DONG Jie,LU Guimin,REN Qifeng,CUI Jianzhong,Discnssion on the formation mechanism of nondendritic semisolid microstructures during liquidus casting,Acta Metallrugica Sinica,38(2),203(2002)(董杰,路贵民,任栖锋,崔建忠,液相线铸造法非枝晶半固态组织形成机理探讨,金属学报,38(2),203(2002)) |
| [11] | LIU Dan,CUI Jianzhong,XIA Kenong,Microstructure of liqudus casting aluninum alloy 2618,Journal of Northeaster University(Natural Science),20(2),173(1999) (刘丹,崔建忠,夏克农,液相线铸造铝合金2618显微组织,东北大学学报(自然科学版),20(2),173(1999)) |
| [12] | WU Xianghong,ZHAO Guoqun,SUN Sheng,LOU Shumei,MA Xinwu,The influence of extrusion speed and frictional status on aluminum profile xtrusion processes,Journal of Plasticity Engineering,14(1),36(2007)(吴向红,赵国群,孙胜,娄淑梅,马新武,挤压速度和摩擦状态对铝型材挤压过程的影响,塑性工程学报,14(1),36(2007)) |
| [13] | M.Ferrante,E.de.Freitas,Rheology and microstructural development of a AI-4wt%0Cu alloy in the semi-selid state,Materials Science and Engineering A,271,172(1999) |
| [14] | E.Tzimas,A.Zavaliangos,Mechanical behavior of alloys with equiaxed microstructure in the semisolid state at high solid content,Acta Mater.,47(2),517(1999) |
| [15] | J.H.Yoon,Y.T.Im,N.S.Kim,Rigid-thermoviscoplastic finite-element analysis of the semi-solid forging of A12024,Journal of Materials Processing Technology,89,104(1999) |
| [16] | H.Iwasakil,T.Moril,M.Mabuchi,K.Higashi,Shear deformation behavior of Al-5%Mg in a semi-solid state,Acta Mater.,46(18),6351(1998) |
| [17] | W.Lapkowski,J.Shicczak,S.Rnsz,Feasibility of metal forming in semi-liquid state,Materials Processing Technology,63,260(1997) |
| [18] | M.M.Rovira,B.C.Lancini,M.H.Robert,Thixo-forming of Al-Cu alloys,Materials Processing Technology,92,42(1999) |
| [19] | D.Y.Yang,K.J.Kim,Design of processes and products through simulation of three-dimensional extrusion,Journal of Materials Processing Technology,191,2(2007) |
| [20] | J.S.Ajiboye,M.B.Adeyemi,Effects of extrusion variables on temperature distribution in axisymmetric extrusion process,International Journal of Mechanical Sciences,50(3),522(2008) |
| [21] | T.Altinbalik,O.Ayer,A theoretical and experimental study for forward extrusion of clover sections,Materials and Design,29(6),1182(2008) |
| [22] | Hanlin Ding,Liufa Liu,Shigeharu Kamado,Wenjiang Ding,Yo Kojima,Study of the microstructure,texture and tensile properties of as-extruded AZ91 magnesium alloy,Journal of Alloys and Compounds,29(5),400(2008) |
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%