用低过热度浇注和弱行波电磁搅拌工艺制备A356铝合金半固态浆料,研究了浇注温度和搅拌功率等复合工艺参数对A356铝合金的半固态浆料的影响i结果表明,这个复合工艺促使初生α-Al几乎在整个熔体区域形核,增加了初生α-Al同时形核的位置和数量,在合金凝固的初期形成足够多的晶核,从而在合金熔体中形成球形或近球形的组织.在浇注温度和浇注功率分别为630℃和1.2 kW条件下可以制备出球状初生α-Al晶粒的A356铝合金半固态浆料.与单纯低过热度浇注的A356铝合金试样相比,在弱行波电磁搅拌条件下,适当提高浇注温度也可获得理想的球状A356铝合金浆料,同时可简化浇注工艺.
参考文献
| [1] | M.C.Flemings,Behavior of metal alloys in the semi-solid state,Metall.Trans.,22A(5),957(1991) |
| [2] | D.B.Spencer,R.Mehrabian,M.C.Flemings,Rheological behavior of Sn-15pct Pb in the crystallization range,Met-all.Trans.,3(7),1925(1972) |
| [3] | M.C.Flemings,R.Mehrabian,D.B.Spencer,Composition and methods for preparing liquid-solid alloys for cast-ing methods employing the liquid-solid alloys,US Patent,3948650(1976) |
| [4] | V.I.Dobatkba,G.I.Eskin,Ingots of aluminum alloys with nondendritic structure produced by ultrasonic treatment for deformation in the semi-solid state,in Proceeding of the 4th International Conference on the Processing of Semi-Solid Alloys and Composite,edited by D.H.Kirk-wood and P.Kapranos (England,University of Sheffield,1996) p.193 |
| [5] | D.H.Kirkwood,P.Kapranos,Semi-solid processing of al-loy,Metals and Materials,130-131,594(2002) |
| [6] | T.Haga,P.Kapranos,Simple rheocasting processes,Jour-nal of Materials Processing Technology,5(1),16(1989) |
| [7] | J.A.Yurko,R.A.Martinez,M.C.Flemings,Commercial de-velopment of the semi-solid rheocasting(SSR《'TM) process,Metallurgical Science and Technology,21(1),10(2003) |
| [8] | M.Fbadon,D.Apelian,Continuous rheoconversion process for semi-solid slurry production,Transaction of the Amer-ican Foundrymen's Society,112,305(2004) |
| [9] | MAO Weimin,ZHAO Aimba,CUI Chenglin,Method and equipment for preparation of semi-solid metals slurry or continuous casting billet with spherical primary grains,China Patent,00109540.4(2000)(毛卫民,赵爱民,崔成林,球状初晶半固态金属浆料或连铸坯料的制备方法及装置,中国专利,00109540.4(2000)) |
| [10] | LIU Guojun,ZHANG Kui,ZHANG Yongzhong,FAN Jiangzhong,XU Jun,SHI Likal,Continuous production and research of semisolid A1Si7Mg alloy,Acta Metallur-gica Sbaica,35(2),141(1999)(刘国钧,张奎,张永忠,樊建中,徐骏,石力开,半固态 AlSi7Mg铝合金的连续制备实验与研究,金属学报,35(2),141(1999)) |
| [11] | MAO Weimin,ZHAO Aimin,CUI Chenglin,SUN Feng,ZHENG Chengli,ZHONG Xueyou,Research on the continuous cast billets of semi-solid AlSi7Mg alloy and their microstructure formation,Acta MetaUurgica Sinica,36(5),539(2000)(毛卫民,赵爱民,崔成林,孙峰,郑承利,钟雪友,AlSiTMg合金半固态连铸坯料和组织形成研究,金属学报,36(5),539(2000)) |
| [12] | LIU Zheng,MAO Weimin,ZHAO Zhengduo,Prepara-tion of semi-solid slurry of aluminum alloys by a new technology,Chinese Journal of Materials Research,20(2),125(2006)(刘政,毛卫民,赵振铎,用新工艺制备半固态铝合金浆料,材料研究学报,20(2),125(2006)) |
| [13] | A.Ohno,The Solidification of Metals,(Tokyo,Chijba Shokan,1976) p.72 |
| [14] | G.Tausig,K.Xia,Rheocasting and semi-solid forming of a usually wrought aluminum alloy,in Proceeding of the 4th International Conference on the Processing of Semi-Solid Alloys and Composite,edited by D.H.Kirkwood and P.Kapranos (England,University of Sheffield,1996) p.290 |
| [15] | WANG Ping,LU Guimin,CUI Jianzhong,Mierostructure of nearby liquidus semi-continuons casting aluminum al-loy A356,Acta Metallurgica Sbaica,38(4),389(2002)(王平,路贵民,崔建忠,近液相线半连续铸造A356铝合金显微组织,金属学报,38(4),389(2002)) |
| [16] | MAO Weimin,CUI Chenglin,ZHAO Aimba,YANG Jil-ian,ZHONG Xueyou,Effect of pouring process on the mi-crostructures of semi-solid AlSi7Mg alloy,J.Mater.Sci.tech.,17(6),615(2001) |
| [17] | H.Wang,D.H.StJone,C.J.Davidson,Z.Ning,Controlled nucleation method for formation of semisolid feedstock,in Proceeding of the 8th International Conference on the Processing of Semi-Solid Alloys and Composite,edited by A.Alexandrou,D.Apelian and G.Georgiou (Limassol,University of Cyprus,2004) p.14 |
| [18] | E.A.Vieira,B.A.O.Junior,M.Ferrante,Microstructure and rheology of an A356 alloy in the semi-solid state,conditioned by a low pouring temperature technique,in Proceeding of the 8th International Conference on the Processing of Semi-Solid Alloys and Composite,edited by A.Alexandrou,D.Apelian and G.Georgiou (Limassol,University of Cyprus,2004) p.11 |
| [19] | M.C.Flembags,R.A.Martinez,Principles of mierostrue-tural formation in semi-solid metal processing.Solid State Phenomena,116,1(2006) |
| [20] | S.Blais,W.Loue,C.Pluehon,Structure control by elec-tromagnetic stirring" and reheating at semi-selid state,in Proceeding of the 4th International Conference an the Processing of Semi-Solid Alloys and Composite,edited by D.H.Kirkwood and P.Kapranos (England,University of Sheffield,1996) p.187 |
| [21] | M.Garat,S.Blais,C.Pluchon,W.R.Loue,Aluminum semi-solid processing:From the billet to the finished part,in Proceeding of the 5th International Conference on the Processing of Semi-Solid Alloys and Composite,edited by C.Dardano,M.Francisco and J.Pround (Colorado,Col-orado School of Mines,1998) p.199 |
| [22] | J.A.Yurko,Semi-solid rheocastbag-increasing the capabil-ities of die casting,Die Casting,(1),50(2004) |
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