用单辊搅拌(SRS)实验机进行了A2017合金的半固态凝固实验,研究了A2017半固态合金组织的形成机理.在轧辊剪切力的作用下在轧辊粗糙表面生长初始枝晶,破碎后形成自由晶,自由晶自由运动和生长形成细小均匀的A2107合金球形组织.在710～750℃内浇注,可制备出具有细小、均匀球形组形,使半固态成形与扩展挤压相结合,通过控制浇注温度得到了表面状态良好的断面尺寸为14mm×25mm的A2017扁型材料.用半固态扩展挤压方法得到的材料断裂强度为280MPa(比国际值提高100MPa),延伸率为49%(比标准值提高29%).
参考文献
| [1] | WU Xiuming(吴秀铭),Semisolid metal Forming which has the greatest developmental prospective(21世纪最有发展前景的现代加工新技术-半固态加工),China Nonferrous Metals Fabrication(中国有色金属加工),6,17(2000) |
| [2] | D.H.Kirkwood,Semisolid metal processing.International Materials Reviews,39,173～189(1994) |
| [3] | LUO Shoujing(罗守靖),TIAN Wentong(田文彤),XIE Shuisheng(谢水生),MAO Weimin(毛卫民),Technobgy and applications of semi-solid forming(半固态加工技术及应用),The Chinese Journal of Nonferrous Metals(中国有色金属学报),10(6),765(2000) |
| [4] | M.C.Flemming, Behavior of Metal and Alloys in the Semi-Solid State, Metall.Trans., 22, 957(1991) |
| [5] | D.B.Sphencer, R.Mehrabian, M.C.Flemings, The rheology of a partially solid alloy. Metall Trans, 3,1925(1972)J.P.Gabathuler, K.Buxmann, Process for producing a liquid-solid metal alloy phase for further processing[6]asmaterial in the thixotropoc state, US Patent, 5186236, 1993 |
| [6] | Vives Charles, Elaboration of semisolid alloys by means of new electromagnetic rheocasting process.Metal. Trans., 21B(4), 189(1992) |
| [7] | Nakada Masayuki, Shiohara Yuh and Flemmings M C. Semi-solid processing of copper alloys for electric motor component. ISIJ International, 30(1), 27(1990) |
| [8] | MAO Weimin(毛卫民),ZHAO Aimin(赵爱民),CUI Chenglin(崔成林),SUN Feng(孙锋),ZHENG Chenli(郑承利),ZHONG Xueyou(钟雪友),Research on the continuous cast billets of semi-solid AlSi7Mg alloy and their microstructure formation(AlSi7Mg合金半固态连铸坯料和组织形成研究),Acta Metallurgica Sinica(金属学报),36(5),539(2000) |
| [9] | JIANG Peng(蒋鹏),HE Xiaomao(贺小毛),ZHANG Xioufeng(张秀峰),Summary of semisolid metal processing(半固态金属成形技术的研究概况),Journal of Plasticity Engineering(塑性工程学报),5(3),1(1998) |
| [10] | M.Kiuchi,S.Sugiyama,A new processto manufacture semi-solid alloys,ISIJ International,35(6),790(1995) |
| [11] | GUAN Renguo(管仁国),CHEN Yanbo(陈彦博),WEN Jinglin(温景林),Effects of processing factors on microstructure of semisolid LY11 alloy during single--roll shearing process(单辊剪切/冷却工艺对LY11半固态合金组织的研究),The Chinese Journal of Nonferrous Metals(中国有色金属学报),11(s1),5(2001) |
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